| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 | Dec'16 | Sep'16 | Jun'16 | Mar'16 | Dec'15 | Sep'15 | Jun'15 | Mar'15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Operating activities | ||||||||||||||||||||
Net loss | ||||||||||||||||||||
-35,372 | -35,183 | -23,137 | -32,416 | -34,091 | -31,841 | -29,616 | -33,824 | -32,873 | -47,217 | -27,865 | -29,066 | -33,480 | -42,469 | -26,017 | -23,156 | -8,685 | -22,960 | -17,630 | -19,681 | -10,004 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||||||||||
Depreciation and amortization | ||||||||||||||||||||
1,826 | 1,809 | 1,969 | 2,032 | 1,920 | 1,927 | 1,895 | 1,819 | 1,860 | 1,823 | 1,700 | 1,862 | 1,758 | 1,999 | 1,749 | 1,234 | 1,194 | 1,172 | 1,389 | 1,333 | 1,641 |
Inventory excess adjustments | ||||||||||||||||||||
-64 | -398 | 507 | 111 | 101 | 35 | 78 | 107 | 45 | 89 | 226 | 42 | 145 | - | - | - | - | - | - | - | - |
Premium amortization and discount accretion on investment securities | ||||||||||||||||||||
721 | 545 | 249 | 81 | 70 | -26 | -46 | 166 | 144 | 154 | 188 | 246 | 269 | 300 | 384 | 397 | 364 | - | - | - | - |
Impairment of assets | ||||||||||||||||||||
- | - | - | - | - | 0 | 0 | 0 | 1,544 | 0 | 0 | 0 | 576 | 1,731 | 387 | 0 | 20 | - | - | - | - |
Stock-based compensation | ||||||||||||||||||||
7,417 | 8,522 | 10,247 | 5,804 | 4,051 | 4,060 | 3,616 | 3,368 | 3,154 | 2,996 | 2,986 | 2,877 | 2,543 | 2,636 | 2,673 | 2,896 | 2,396 | 2,420 | 2,166 | 1,593 | 1,147 |
Non-cash lease expense | ||||||||||||||||||||
1,940 | 1,941 | 1,958 | 1,959 | 1,890 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
(Gain) loss realized on investment securities | ||||||||||||||||||||
- | - | - | - | - | -1 | -10 | 0 | -32 | -9 | -8 | -7 | -40 | -1 | 80 | 28 | 84 | - | - | - | - |
(Gain) loss on sales of property and equipment | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 0 | -12 | - | - | - | - | - | - | - | - |
Loss (gain) from changes in fair value of warrants | ||||||||||||||||||||
- | - | - | - | - | -1 | 0 | 4,011 | 108 | -1,545 | 717 | 722 | -1,042 | 234 | -397 | 816 | -510 | -28 | -2,416 | 2,962 | 963 |
Interest accrued for borrowings and claims related settlement | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | -1,337 | 1,426 | 215 | 184 | - | - | - | - | - | - | - | - |
Amortization of debt discount | ||||||||||||||||||||
100 | 200 | 100 | 100 | 100 | 100 | 100 | 102 | 98 | - | - | - | - | - | - | - | - | - | - | - | - |
Other non-cash charges | ||||||||||||||||||||
- | - | - | 195 | 8 | - | - | - | 61 | - | - | - | - | - | - | - | - | - | - | - | - |
Other non-cash (benefits) | ||||||||||||||||||||
57 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Provision for credit losses | ||||||||||||||||||||
1,400 | - | - | - | - | - | - | - | - | 236 | 147 | -139 | -101 | 630 | -125 | 245 | 234 | 250 | 160 | 28 | 91 |
Gain from change in fair value of long term debt | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1,276 | 1,810 | -322 | -1,800 |
Changes in operating assets and liabilities | ||||||||||||||||||||
Accounts receivable | ||||||||||||||||||||
8,786 | -4,909 | 1,662 | 2,974 | -2,145 | 1,633 | 3,606 | 6,570 | 6,284 | -569 | -363 | -1,845 | -3,538 | 56 | 3,111 | 311 | 478 | 293 | 706 | -86 | -463 |
Inventory | ||||||||||||||||||||
1,703 | -517 | -2,215 | 1,599 | 216 | 1,423 | 0 | 518 | 2,959 | -101 | 2,055 | -822 | 1,954 | -725 | 356 | 2,204 | -1,404 | -4,792 | -1,228 | 1,311 | 1,780 |
Prepaid expenses and other current assets | ||||||||||||||||||||
3,227 | 4,635 | 4,857 | 2,329 | 2,135 | -272 | -807 | 960 | -2,524 | 2,175 | 689 | -2,159 | 810 | -1,980 | 3,761 | 1,706 | -1,410 | 129 | 1,445 | 919 | 1,304 |
Restricted cash | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | -86 | -47 | 79 | -30 | 41 | 228 | 34 |
Other assets | ||||||||||||||||||||
-99 | -200 | -200 | 9,700 | -201 | -33 | 113 | -200 | -215 | -124 | -253 | -58 | -165 | -216 | 2,496 | -29 | 561 | 468 | 236 | 116 | 221 |
Accounts payable | ||||||||||||||||||||
217 | -1,068 | 1,184 | -912 | -5,466 | 2,814 | 1,751 | -835 | 51 | 4,765 | -6,576 | 3,930 | -1,902 | -397 | -497 | 325 | 1,825 | 1,252 | -2,576 | -3,040 | 5,718 |
Accrued compensation | ||||||||||||||||||||
-135 | 1,850 | 4,088 | -669 | -1,850 | 3,082 | 971 | -1,317 | 333 | 172 | 1,322 | -1,222 | -1,739 | 853 | 1,119 | 196 | 347 | 925 | 616 | 1,466 | -435 |
Other accrued liabilities | ||||||||||||||||||||
3,348 | 6,923 | -648 | 1,313 | 1,018 | 1,978 | -46 | -953 | -2,799 | 11,195 | -3,769 | 1,881 | 5,612 | -1,930 | 1,708 | -1,759 | 1,603 | 1,685 | 2,658 | 4,138 | -455 |
Deferred revenue | ||||||||||||||||||||
-2,832 | -2,016 | 7,372 | 35,055 | 437 | 6,183 | 697 | 404 | 35,485 | 379 | 371 | 78 | 18 | -2 | 244 | 117 | 71 | 39 | 71 | 3 | -81 |
Deferred rent, net of current portion | ||||||||||||||||||||
- | - | - | - | - | -162 | -146 | -627 | 307 | 101 | -106 | -91 | 1,548 | - | - | - | - | - | - | - | - |
Net cash used in operating activities | ||||||||||||||||||||
-35,100 | -15,054 | -12,639 | -3,932 | -31,819 | -12,813 | -23,271 | -35,543 | 1,046 | -28,129 | -31,302 | -13,774 | -24,620 | -29,646 | -24,216 | -20,661 | 471 | -4,689 | -17,283 | -13,369 | -2,491 |
Investing activities | ||||||||||||||||||||
Purchases of investments | ||||||||||||||||||||
53,876 | 249,617 | 34,833 | 143,548 | 18,628 | 55,202 | 94,482 | 10,599 | 9,985 | 88,556 | 180,044 | 224 | 3,995 | 5,003 | 18,401 | 16,039 | 14,079 | - | - | - | - |
Proceeds from sale of investments | ||||||||||||||||||||
11,500 | - | - | - | - | 0 | 9,492 | -1 | 27,896 | 9,918 | 18,561 | 11,738 | 25,053 | 0 | 42,419 | 6,167 | 10,599 | - | - | - | - |
Proceeds from maturity of investments | ||||||||||||||||||||
93,785 | 55,120 | 56,000 | 30,280 | 32,500 | 79,000 | 25,000 | 19,600 | 8,000 | 106,875 | 121,325 | 0 | 3,000 | 30,500 | 16,000 | 8,000 | 10,000 | - | - | - | - |
Proceeds from sale of property and equipment | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 225 | - | - | - | - |
Purchases of property and equipment, net | ||||||||||||||||||||
7,917 | 2,414 | 955 | 644 | 955 | 2,110 | 543 | 375 | 852 | 720 | 1,081 | 1,728 | 6,338 | 8,559 | 7,266 | 3,827 | 3,484 | 1,400 | 415 | 2,288 | 3,749 |
Net cash provided by investing activities | ||||||||||||||||||||
43,492 | -195,245 | 29,887 | -113,912 | 12,917 | 21,688 | -60,533 | 8,625 | 25,059 | 27,517 | -41,239 | 9,786 | 17,720 | 16,938 | 32,527 | -5,699 | 3,261 | -177,874 | -26,768 | -2,288 | -3,749 |
Financing activities | ||||||||||||||||||||
Proceeds from exercise of stock options | ||||||||||||||||||||
3,826 | 2,625 | 4,433 | 3,405 | 2,578 | 1,268 | 7,866 | 3,633 | 564 | 481 | 895 | 526 | 413 | 873 | 454 | 962 | 1,306 | - | - | - | - |
Proceeds from issuance of common stock, net of issuance costs | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 209 | 106 |
Payment for debt issuance costs on long-term debt facility | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 6 |
Proceeds from issuance of preferred stock, net | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | -27 |
Repayments of equipment financing | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 4,680 | 585 | 585 |
Deferred offering costs | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2,264 | 76 |
Net cash provided by financing activities | ||||||||||||||||||||
3,826 | 220,616 | 4,433 | 113,147 | 2,578 | 3,030 | 104,643 | 5,488 | 564 | 2,035 | 75,895 | 2,029 | 413 | 2,492 | 454 | 8,932 | 1,306 | 15,318 | 178,000 | -2,448 | -588 |
Net (decrease) increase in cash, cash equivalents and restricted cash | ||||||||||||||||||||
12,218 | 10,317 | 21,681 | -4,697 | -16,324 | 11,905 | 20,839 | -21,430 | 26,669 | 1,423 | 3,354 | -1,959 | -6,487 | -10,216 | 8,765 | -17,428 | 5,038 | -167,245 | 133,949 | -18,105 | -6,828 |
Supplemental non-cash investing and financing activities: | ||||||||||||||||||||
Obtaining right-of-use assets in exchange for lease liabilities | ||||||||||||||||||||
- | - | 0 | 0 | 28,191 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Purchases of property and equipment in accounts payable and accruals | ||||||||||||||||||||
2,657 | 3,650 | -267 | 124 | 199 | - | - | - | 209 | - | - | - | - | - | - | - | - | - | - | - | - |