| 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 | ||||||||||||||||||||
-37,292 | 15,424 | -19,378 | -12,493 | -11,582 | -12,951 | -13,724 | -5,778 | -3,681 | -92 | -964 | -1,130 | 4,503 | 4,522 | 2,098 | -1,118 | -35,962 | -38,321 | 0 | 0 | 0 |
Adjustments to reconcile net loss to net cash (used in) provided by operating activities: | ||||||||||||||||||||
Depreciation and amortization | ||||||||||||||||||||
12,774 | 6,306 | 3,875 | 4,631 | 5,441 | 6,264 | 6,604 | 6,415 | 6,138 | 5,482 | 5,253 | 4,895 | 4,609 | 4,722 | 4,478 | 4,379 | 4,318 | 4,267 | 0 | 0 | 0 |
Amortization of lease right-of-use assets | ||||||||||||||||||||
4,468 | 3,557 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Deferred income tax benefit | ||||||||||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Loss on disposal of fixed assets | ||||||||||||||||||||
- | - | - | - | - | -156 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Stock-based compensation | ||||||||||||||||||||
46,440 | 36,393 | 30,591 | 29,217 | 27,431 | 25,704 | 23,975 | 21,520 | 19,792 | 17,592 | 15,322 | 13,256 | 10,571 | 8,786 | 7,675 | 6,575 | 8,953 | 7,889 | 0 | 0 | 0 |
Change in fair value of cash settled stock options | ||||||||||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Change in fair value of stock warrant liability | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | -43 | -41 | -72 | 1,080 | 1,132 | 0 | 0 | 0 |
Unrealized foreign currency losses | ||||||||||||||||||||
-2,118 | -194 | -647 | -247 | -2,246 | -1,647 | -1,497 | -873 | 1,108 | 951 | 269 | 27 | -175 | -368 | 0 | 0 | 0 | - | - | - | - |
Amortization of premium on short-term investments | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | - | - | - | - |
Amortization of discount on short-term investments | ||||||||||||||||||||
-245 | -338 | -388 | -381 | -349 | -295 | -240 | -173 | -65 | 20 | 0 | 0 | 0 | - | - | - | - | 15 | 0 | 0 | 0 |
Other liabilities | ||||||||||||||||||||
4,870 | 5,352 | 4,094 | 2,659 | 1,769 | 1,919 | 1,636 | 2,410 | 1,734 | 722 | 545 | -367 | -185 | -31 | -29 | -104 | -119 | -91 | 0 | 0 | 0 |
Changes in operating assets and liabilities: | ||||||||||||||||||||
Accounts receivable, net | ||||||||||||||||||||
-4,573 | 6,632 | 4,871 | 4,961 | 3,348 | 2,252 | 2,907 | 536 | 2,963 | 2,181 | 5,104 | 5,029 | 4,890 | 6,791 | 4,745 | 5,102 | 3,296 | 2,163 | 0 | 0 | 0 |
Inventory, net | ||||||||||||||||||||
-18,803 | -4,078 | -622 | 329 | 970 | 2,303 | 4,755 | 5,520 | 5,114 | 4,162 | 2,662 | 2,724 | 2,344 | 2,935 | 3,139 | 2,770 | 2,686 | 1,848 | 0 | 0 | 0 |
Prepaid expenses and other current assets | ||||||||||||||||||||
-2,979 | -917 | -2,387 | 507 | -1,221 | -1,756 | -1,769 | -2,028 | -691 | 494 | 202 | -910 | -930 | -1,762 | -2,899 | -1,053 | -1,053 | -755 | 0 | 0 | 0 |
Accounts payable and accrued liabilities | ||||||||||||||||||||
1,163 | 779 | 4,467 | 6,665 | 5,449 | 2,527 | 4,967 | 1,447 | 4,001 | 9,741 | 4,874 | 5,213 | 3,596 | 5,096 | 3,352 | 2,359 | 610 | 1,518 | 0 | 0 | 0 |
Other assets | ||||||||||||||||||||
1,714 | 1,777 | -1,246 | -1,046 | -116 | -204 | 896 | 876 | 156 | 345 | 0 | 0 | 0 | - | - | - | - | 127 | 0 | 0 | 0 |
Net cash (used in) provided by operating activities | ||||||||||||||||||||
-13,707 | -400 | 20,986 | 28,336 | 25,560 | 18,900 | 14,198 | 16,827 | 17,313 | 26,091 | 16,907 | 13,845 | 15,572 | 12,309 | 8,461 | 3,975 | -2,092 | -2,188 | 0 | 0 | 0 |
Investing activities | ||||||||||||||||||||
Purchases of short-term investments | ||||||||||||||||||||
82,455 | 80,388 | 88,322 | 87,422 | 82,390 | 93,696 | 92,970 | 95,673 | 95,627 | 94,307 | 85,905 | 85,133 | 78,081 | 75,192 | 0 | 0 | 0 | - | - | - | 0 |
Proceeds from sales and maturities of short-term investments | ||||||||||||||||||||
83,981 | 80,494 | 76,536 | 73,498 | 70,943 | 78,851 | 81,886 | 90,733 | 87,731 | 88,891 | 84,842 | 75,980 | 65,011 | 55,354 | 0 | 0 | 0 | - | - | - | - |
Purchases of property and equipment | ||||||||||||||||||||
4,855 | 4,724 | 11,112 | 10,832 | 9,720 | 10,315 | 4,591 | 6,246 | 6,797 | 6,311 | 6,495 | 7,130 | 6,661 | 6,278 | 0 | 0 | 0 | - | - | - | - |
Investment in company-owned life insurance | ||||||||||||||||||||
0 | - | - | - | 0 | - | - | - | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||||||||||||||||
45,767 | 43,426 | -24,138 | -25,996 | -22,859 | -26,400 | -16,338 | -11,849 | -15,542 | -12,390 | -7,558 | -16,283 | -19,731 | -26,116 | -93,384 | -83,399 | -93,900 | -85,628 | 0 | 0 | 0 |
Proceeds from exercise of stock options | ||||||||||||||||||||
14,911 | 15,064 | 16,241 | 23,219 | 21,809 | 18,654 | 16,851 | 5,523 | 3,181 | 3,699 | 5,576 | 6,427 | 7,591 | 6,059 | 3,764 | 2,784 | 1,915 | 1,734 | 0 | 0 | 0 |
Proceeds from share purchases under Employee Stock Purchase Plan | ||||||||||||||||||||
3,764 | 3,388 | 3,388 | 3,023 | 3,023 | 3,509 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Payment of employee taxes related to vested restricted stock units | ||||||||||||||||||||
7,011 | 5,601 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Proceeds from senior secured term and draw-to term loans | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 6,852 | 0 | 0 | 0 |
Payments of line of credit | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3,600 | 0 | 0 | 0 |
Payments of subordinated notes | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | -9,696 | -8,820 | -8,711 | -7,902 | -7,804 | 0 | 0 | 0 |
Proceeds from exercise of stock warrants | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 50 | 0 | 0 | 0 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||||||||||
-10,832 | -9,645 | 14,365 | 21,625 | 24,143 | 21,576 | 20,035 | 6,593 | 5,537 | 4,667 | 4,656 | 3,261 | 2,031 | -1,642 | -3,052 | -12,216 | 102,241 | 107,110 | 0 | 0 | 0 |
Effect of exchange rate changes on cash and cash equivalents | ||||||||||||||||||||
-812 | -252 | -40 | -30 | 98 | 48 | -15 | -80 | -372 | -434 | 325 | 208 | 307 | 371 | -376 | -165 | -96 | -26 | 0 | 0 | 0 |
Net (decrease) increase in cash, cash equivalents and restricted cash | ||||||||||||||||||||
20,447 | 33,160 | 11,137 | 23,899 | 26,906 | 14,088 | 17,880 | 11,491 | 6,936 | 17,934 | 14,330 | 1,031 | -1,821 | -15,078 | -88,351 | -91,805 | 6,153 | 19,268 | 0 | 0 | 0 |
Supplemental schedule of noncash investing and financing activities | ||||||||||||||||||||
Reduction of liability upon vesting of stock options previously exercised for unvested stock | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | 4 | 12 | 23 | 44 | 62 | 75 | 84 | 84 | 86 | 0 | 0 | 0 |
Supplemental disclosures of cash flow information | ||||||||||||||||||||
Taxes paid | ||||||||||||||||||||
381 | 171 | 484 | 127 | 438 | 401 | -39 | 313 | 14 | 12 | 513 | 514 | 452 | 513 | 75 | 77 | 76 | 25 | 0 | 0 | 0 |
Interest paid | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 285 | 393 | 532 | 706 | 834 | 0 | 0 | 0 |