| Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 |
|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities | |||||||||
Net loss | |||||||||
-17,881 | -13,067 | -5,506 | -2,065 | -833 | -1,368 | - | - | - | - |
Net loss | |||||||||
- | - | - | - | - | - | - | - | - | -2,025 |
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: | |||||||||
Depreciation and amortization | |||||||||
1,563 | 1,616 | 1,551 | 1,516 | 1,370 | 1,385 | 1,298 | 1,216 | 1,173 | 1,033 |
Stock-based compensation expense | |||||||||
2,889 | 2,290 | 2,257 | 2,123 | 1,162 | 978 | 716 | 408 | 307 | 242 |
Accretion of investment premium, net of amortization of discount | |||||||||
110 | 112 | - | - | - | - | - | - | - | - |
Change in fair value of convertible preferred stock warrant liability | |||||||||
- | - | - | - | - | - | -393 | -317 | 1,040 | 660 |
Amortization of debt discount and extinguishment cost | |||||||||
- | - | - | - | - | - | 191 | 81 | 100 | 105 |
Non-cash interest expense related to debt costs | |||||||||
- | - | - | - | - | - | 36 | 26 | 32 | 81 |
Changes in operating assets and liabilities: | |||||||||
Accounts receivable | |||||||||
-2,824 | -6,577 | 1,146 | -219 | 5,583 | -4,595 | 2,623 | -1,652 | 320 | 2,226 |
Inventories | |||||||||
3,302 | 2,541 | -531 | -1,393 | 242 | -2,313 | 2,796 | 6,427 | 1,650 | 579 |
Operating lease assets, net | |||||||||
-258 | -254 | - | - | - | - | - | - | - | - |
Prepaid expenses and other assets | |||||||||
-372 | -218 | -457 | -292 | -617 | -1,953 | 1,743 | -630 | 2,159 | 838 |
Accounts payable | |||||||||
2,994 | -1,870 | -135 | 1,431 | -1,334 | -1,193 | 1,783 | 3,046 | -2,127 | -563 |
Accrued and other liabilities | |||||||||
-1,264 | 1,873 | 717 | 2,281 | 1,493 | -860 | 485 | 2,037 | 1,527 | -1,236 |
Operating lease liabilities | |||||||||
202 | 224 | - | - | - | - | - | - | - | - |
Net cash provided by (used in) operating activities | |||||||||
-11,859 | -4,986 | -1,518 | 7,190 | -3,420 | 7,803 | - | - | - | - |
Cash flows from investing activities | |||||||||
Net cash provided by (used in) operating activities | |||||||||
- | - | - | - | - | - | - | - | - | -5,346 |
Purchases of property and equipment | |||||||||
3,364 | 676 | 165 | 2,453 | 1,250 | 731 | 2,633 | 1,079 | 968 | 905 |
Proceeds from sales of short-term investments | |||||||||
0 | 1,000 | - | - | - | - | - | - | - | - |
Proceeds from maturities of short-term investments | |||||||||
12,085 | 14,000 | 11,085 | 11,935 | 15,153 | 5,400 | - | - | - | - |
Purchases of short-term investments | |||||||||
3,952 | 7,934 | 15,067 | 21,520 | 5,533 | 15,604 | - | - | - | - |
Net cash provided by (used in) investing activities | |||||||||
4,769 | 6,390 | -2,147 | -12,038 | 8,440 | -10,935 | - | - | - | - |
Cash flows from financing activities | |||||||||
Proceeds from exercise of stock options | |||||||||
- | 392 | - | - | - | - | - | - | - | - |
Net cash used in investing activities | |||||||||
- | - | - | - | - | - | - | - | - | -905 |
Repayments on short and long-term borrowings | |||||||||
- | - | - | - | - | - | 11,315 | 2,792 | 2,529 | 2,525 |
Proceeds from exercise of stock options and preferred stock warrants, net | |||||||||
- | - | - | - | - | - | - | - | - | 225 |
Purchases of IP licenses | |||||||||
- | - | 0 | 0 | 0 | 26 | 65 | 65 | 65 | 65 |
Payment of costs related to initial public offering | |||||||||
- | - | 162 | 0 | 0 | 276 | 1,818 | 430 | 559 | 68 |
Net cash provided by financing activities | |||||||||
2,907 | 392 | 1,507 | 816 | 3,248 | -302 | - | - | - | - |
Net decrease in cash and cash equivalents | |||||||||
-4,183 | 1,796 | -2,158 | -4,032 | 8,268 | -3,434 | - | - | - | - |
Net cash used in financing activities | |||||||||
- | - | - | - | - | - | - | - | - | -2,433 |
Net decrease in cash and cash equivalents | |||||||||
- | - | - | - | - | - | - | - | - | -8,684 |
Supplemental disclosures of cash flow information | |||||||||
Cash paid for interest | |||||||||
7 | 10 | - | - | - | - | - | - | - | - |
Cash paid for income taxes | |||||||||
82 | 125 | - | - | - | - | - | - | - | - |
Cash paid for amounts included in the lease liabilities | |||||||||
352 | 418 | - | - | - | - | - | - | - | - |
Cashless exercises of warrants, net of assumed proceeds from shares | |||||||||
- | - | - | 625 | 0 | 550 | - | - | - | - |
Unpaid costs related to initial public offering | |||||||||
- | - | - | - | - | - | -354 | 339 | -127 | 396 |
Property and equipment received and accrued | |||||||||
-2,492 | 2,810 | -14 | -902 | 657 | 345 | -84 | 319 | 77 | 107 |