| Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 | Sep'16 | Jun'16 | Mar'16 | Dec'15 | Sep'15 | Jun'15 | Mar'15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||||||||
Net loss | ||||||||||||
-8,950 | -11,197 | -7,407 | -8,907 | -10,387 | -13,217 | -8,821 | -10,129 | -12,110 | -10,054 | -9,138 | -9,346 | -9,032 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||
Depreciation and amortization | ||||||||||||
383 | 365 | 482 | 501 | 512 | 497 | 509 | 488 | 484 | - | - | - | 398 |
Stock-based compensation | ||||||||||||
630 | 979 | 914 | 1,008 | 699 | 722 | 569 | 715 | 432 | 330 | 358 | 388 | 173 |
Amortization of debt discount | ||||||||||||
- | - | - | - | 36 | 2 | - | - | - | - | - | - | - |
Changes in fair value of convertible preferred stock warrant liability | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | -32 | 504 |
Recovery of doubtful receivable accounts | ||||||||||||
39 | -17 | - | - | -66 | -16 | - | - | - | - | - | - | - |
Loss on extinguishment of debt | ||||||||||||
- | - | 0 | 1,950 | 1 | -2,303 | - | - | - | - | - | - | - |
Payment of original issue discount | ||||||||||||
- | - | -572 | 0 | 0 | 782 | - | - | - | - | - | - | - |
Non-cash interest expense | ||||||||||||
- | 65 | - | - | - | - | 36 | 36 | 35 | 36 | 36 | 15 | 56 |
Accretion of premium (discount) on marketable securities | ||||||||||||
27 | 3 | -1 | 22 | 14 | -18 | - | - | - | - | - | - | - |
Recovery (provision) for doubtful accounts | ||||||||||||
- | - | - | - | - | - | 81 | -7 | -11 | - | 58 | 63 | 26 |
Changes in operating assets and liabilities: | ||||||||||||
Accounts receivable | ||||||||||||
435 | -1,270 | 1,138 | 705 | -540 | 278 | 716 | 445 | 432 | 400 | 105 | -325 | 853 |
Inventory | ||||||||||||
-195 | 1,293 | 940 | 936 | -353 | 861 | -329 | -125 | 393 | 300 | 56 | 426 | 129 |
Prepaid expenses and other current assets | ||||||||||||
477 | -213 | -360 | 932 | -133 | -253 | 299 | 41 | -141 | -449 | 267 | -276 | -1,110 |
Accounts payable | ||||||||||||
257 | -388 | 70 | 586 | -337 | 1,053 | 456 | 521 | -650 | 1,319 | -101 | 380 | -249 |
Accrued and other current liabilities | ||||||||||||
-1,195 | 1,546 | -763 | -106 | 46 | -487 | 160 | 622 | 363 | 841 | 45 | -273 | 924 |
Deferred rent | ||||||||||||
-52 | -49 | -46 | -35 | -35 | -36 | -20 | -20 | -19 | -16 | -5 | -5 | 131 |
Net cash used in operating activities | ||||||||||||
-9,566 | -8,509 | -7,834 | -11,701 | -8,521 | -10,829 | - | - | - | - | - | - | - |
Cash flows from investing activities | ||||||||||||
Net cash used in operating activities | ||||||||||||
- | - | - | - | - | - | - | - | -12,160 | - | -8,736 | -8,214 | -6,941 |
Purchases of property and equipment | ||||||||||||
231 | 182 | 176 | 110 | 270 | 288 | 388 | 206 | 290 | 567 | 486 | 1,228 | 1,467 |
Maturities of marketable securities | ||||||||||||
- | - | 4,497 | 4,978 | 9,542 | 1,200 | - | - | - | - | - | - | - |
Net cash (used in) provided by investing activities | ||||||||||||
-5,767 | -182 | 1,280 | 5,118 | -440 | 912 | - | - | - | - | - | - | - |
Cash flows from financing activities | ||||||||||||
Proceeds from revolving credit facility, net of payment | ||||||||||||
-1,026 | 1,474 | - | - | -518 | -3,000 | - | - | - | - | - | - | - |
Proceeds from common stock offerings, net of offering costs | ||||||||||||
0 | 21,700 | - | - | - | - | - | - | - | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||||||||
- | - | - | - | - | - | - | - | -290 | - | -451 | -1,228 | -1,467 |
Proceeds from issuance of long-term debt, net of issuance costs | ||||||||||||
- | - | 0 | 9,971 | 0 | 19,701 | - | - | - | - | 0 | 0 | 5,000 |
Payments of long-term debt - related party | ||||||||||||
- | - | 572 | 0 | 0 | 14,193 | - | - | - | - | - | - | - |
Proceeds from issuance of common stock upon exercise of stock options | ||||||||||||
94 | 42 | 109 | 177 | 223 | 17 | 438 | 199 | 18 | 103 | 3 | 13 | 20 |
Prepayment penalty on long-term debt | ||||||||||||
- | - | - | - | 0 | 1,950 | - | - | - | - | - | - | - |
Proceeds from issuance of convertible preferred stock, net of issuance costs | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 22,769 |
Net cash provided by financing activities | ||||||||||||
1,120 | 20,268 | -4 | 14,126 | 798 | 6,575 | - | - | - | - | - | - | - |
Net increase (decrease) in cash and cash equivalents and restricted cash | ||||||||||||
-14,213 | 11,577 | - | - | -8,163 | -3,342 | - | - | - | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
- | - | - | - | - | - | - | - | 18 | - | -2,533 | 49,946 | 27,611 |
Net increase (decrease) in cash and cash equivalents | ||||||||||||
- | - | - | - | - | - | 22,253 | -8,408 | -12,432 | -7,774 | -11,720 | 40,504 | 19,203 |
Supplemental disclosures of cash flow information | ||||||||||||
Interest paid to related party | ||||||||||||
- | - | -1,134 | 531 | 523 | 457 | 468 | 469 | 469 | 469 | 467 | 491 | 313 |
Cash paid for interest | ||||||||||||
639 | 608 | - | - | - | - | - | - | - | - | - | - | - |
Non-cash investing and financing activities | ||||||||||||
Purchases of property and equipment in accounts payable and accrued liabilities at period end | ||||||||||||
-38 | 63 | 44 | -1 | -23 | 39 | 14 | 92 | 32 | 66 | -70 | -775 | 857 |
Common stock offering costs in accounts payable and accrued liabilities | ||||||||||||
-162 | 290 | - | - | - | - | - | - | - | - | - | - | 178 |
Initial public offering issuance costs in accounts payable | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 1,176 |