| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 |
|---|---|---|---|---|---|---|---|---|---|---|
Net loss | ||||||||||
-47,350 | -50,500 | -61,850 | -50,601 | -42,197 | -38,263 | -33,643 | -22,103 | -23,970 | -18,403 | -19,963 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||
Depreciation and amortization | ||||||||||
7,268 | 7,088 | 5,317 | 3,916 | 3,405 | 2,656 | 2,530 | 1,198 | 1,326 | 1,063 | 1,569 |
Net amortization (accretion) of premiums/discounts on investments | ||||||||||
133 | 142 | 39 | -89 | 180 | 702 | 314 | - | - | - | - |
Gain on sale of investment in preferred stock | ||||||||||
- | - | - | 9 | 223 | 0 | 1,392 | 0 | 0 | - | - |
Net accretion of premiums/discounts on investments | ||||||||||
1,740 | 938 | 1,132 | 388 | 285 | 0 | 0 | 0 | 0 | - | - |
Loss from disposal of property and equipment | ||||||||||
- | - | - | - | - | - | - | - | - | - | -8 |
Impairment losses | ||||||||||
- | - | - | - | - | - | - | - | - | - | 1,506 |
Stock-based compensation | ||||||||||
12,046 | 11,697 | 12,170 | 9,236 | 9,995 | 5,796 | 3,893 | 2,352 | 1,872 | 1,553 | 1,311 |
Provision for bad debt | ||||||||||
338 | 23 | 14 | 13 | 25 | 0 | 2,721 | -24 | 0 | - | - |
Non-cash inventory adjustments | ||||||||||
2,631 | 1,426 | 1,323 | 134 | -594 | 450 | 1,779 | -482 | 517 | - | - |
Elimination of cumulative foreign currency translation adjustments upon liquidation of foreign subsidiary | ||||||||||
- | - | - | - | - | - | -450 | 0 | 0 | - | - |
Impairment of intangible asset | ||||||||||
- | - | - | - | - | - | 1,624 | 0 | 0 | - | - |
Other non-cash adjustments | ||||||||||
537 | 15 | -224 | 145 | 186 | 185 | 0 | 0 | - | - | - |
Changes in operating assets and liabilities: | ||||||||||
Accounts receivable | ||||||||||
5,584 | 878 | 1,555 | 2,250 | 1,983 | 2,030 | 2,390 | 2,068 | 420 | 508 | 51 |
Inventories | ||||||||||
6,534 | 2,414 | 10,512 | 3,450 | 1,286 | 229 | 1,313 | -880 | 1,742 | 651 | -1,227 |
Prepaid expenses and other assets | ||||||||||
750 | -854 | 599 | 613 | 36 | 184 | 119 | -68 | -1,846 | 1,404 | -316 |
Accounts payable | ||||||||||
1,501 | -1,389 | 2,557 | 4,105 | -757 | 85 | 1,343 | 728 | 378 | -1,058 | -857 |
Accrued compensation | ||||||||||
-885 | 1,059 | -263 | 2,172 | -458 | 1,797 | 951 | 1,811 | 979 | 547 | - |
Other current and non-current liabilities | ||||||||||
249 | -289 | -893 | 1,088 | 355 | -537 | -544 | 1,397 | 0 | - | - |
Other current | ||||||||||
- | - | - | - | - | - | - | - | - | - | -510 |
Net cash used in operating activities | ||||||||||
-34,926 | -32,512 | -53,422 | -35,637 | -31,915 | -29,572 | -23,796 | -16,243 | -19,214 | -18,861 | -15,444 |
Investing activities: | ||||||||||
Change in restricted cash | ||||||||||
- | - | - | - | - | - | -585 | 1,343 | 0 | - | - |
Payments for intellectual property licenses | ||||||||||
0 | 0 | 500 | 1,500 | 550 | 350 | 882 | 1,327 | 734 | - | - |
Purchases of property and equipment | ||||||||||
2,092 | 2,575 | 4,815 | 7,000 | 3,756 | 5,726 | 4,270 | 3,476 | 1,376 | 1,860 | 1,069 |
Purchases of marketable securities | ||||||||||
32,135 | 29,778 | 70,989 | 33,688 | 22,646 | 28,054 | 76,190 | 1,000 | 0 | - | - |
Proceeds from sales of marketable securities | ||||||||||
0 | 0 | 13,896 | 8,015 | 223 | - | - | - | - | - | - |
Maturities of marketable securities | ||||||||||
32,055 | 66,300 | 37,500 | 10,050 | 46,050 | - | - | - | - | - | - |
Proceeds from sales of marketable securities | ||||||||||
- | - | - | - | - | 7,497 | 6,643 | 0 | 0 | - | - |
Maturities of marketable securities | ||||||||||
- | - | - | - | - | -56,050 | -1,550 | -5,000 | 5,000 | - | - |
Proceeds from the sale of property and equipment and intangible assets | ||||||||||
- | - | - | - | - | - | - | - | - | - | 10 |
Net cash used in investing activities | ||||||||||
-2,172 | 33,947 | -24,908 | -24,123 | 19,321 | 29,417 | -72,564 | -2,146 | -7,110 | -1,860 | -1,059 |
Financing activities: | ||||||||||
Proceeds from issuance of common stock, net of offering costs | ||||||||||
14,021 | 1,061 | 87,267 | 30,920 | 884 | 812 | 86,547 | 48,300 | 34,533 | 27,600 | 24,133 |
Costs incurred in conjunction with public offering | ||||||||||
574 | 0 | 5,469 | 1,143 | 0 | 0 | 5,510 | 3,211 | 2,854 | 4,991 | - |
Principal repayment of borrowings | ||||||||||
35,093 | 92 | 7,848 | 40 | 22 | - | - | - | - | - | - |
Proceeds from borrowings | ||||||||||
70,000 | 7,098 | 15,000 | 10,000 | 10,000 | - | - | - | - | - | - |
Principal repayment of borrowings | ||||||||||
- | - | - | - | - | 56 | 766 | 1,984 | 417 | -5 | - |
Payments associated with debt issuance | ||||||||||
3,638 | 20 | 187 | 90 | 718 | 0 | 0 | - | - | - | - |
Proceeds from borrowings | ||||||||||
- | - | - | - | - | 0 | 166 | 991 | 2,000 | - | - |
Proceeds from stock option exercises | ||||||||||
457 | 22 | 287 | 712 | 989 | 531 | 396 | 223 | 0 | - | - |
Net cash provided by financing activities | ||||||||||
45,173 | 8,069 | 89,050 | 40,359 | 11,133 | 1,287 | 80,833 | 44,319 | 33,262 | 22,614 | 24,133 |
Effect of exchange rate changes on cash | ||||||||||
-1 | 28 | 75 | -25 | -9 | 0 | - | - | 53 | -47 | 30 |
Net increase in cash and cash equivalents | ||||||||||
8,074 | 9,532 | 10,795 | -19,426 | - | - | - | - | - | - | - |
Net increase (decrease) in cash and cash equivalents | ||||||||||
- | - | - | - | -1,470 | 1,132 | -15,527 | 25,930 | 6,991 | 1,846 | 7,660 |
Non-cash investing and financing activities: | ||||||||||
Transfer of systems to property and equipment from inventory | ||||||||||
2,846 | 1,689 | 4,885 | 263 | 225 | - | - | - | - | - | - |
Property and equipment purchased with capital lease | ||||||||||
- | - | - | - | - | - | - | 109 | 0 | - | - |
Transfer of systems from property and equipment into inventory | ||||||||||
- | - | - | - | - | 256 | 575 | 223 | 46 | 109 | - |
Property and equipment costs incurred but not paid included in accounts payable | ||||||||||
1,234 | 372 | 227 | 1,159 | 146 | 124 | 603 | 592 | 76 | 276 | - |
Reclassification of deposits on systems in other current assets and inventory to property and equipment | ||||||||||
- | - | - | - | - | - | - | - | - | 289 | 257 |
Offering costs incurred but not paid included in other liabilities | ||||||||||
- | - | - | - | - | - | 65 | 0 | 0 | 103 | - |
Supplemental cash flow information: | ||||||||||
Cash received for income taxes, net | ||||||||||
- | - | - | - | - | - | - | - | 3 | 5 | 181 |
Cash paid for income taxes, net | ||||||||||
- | - | - | - | - | 24 | 21 | 91 | 0 | - | - |
Cash received for interest | ||||||||||
- | - | - | - | - | 244 | 403 | 42 | 21 | 25 | 33 |
Cash paid for interest | ||||||||||
- | - | - | 1,130 | 572 | 20 | 19 | 90 | 95 | - | - |
Cash paid for income taxes, net | ||||||||||
155 | 165 | 61 | 65 | 10 | - | - | - | - | - | - |
Cash paid for interest | ||||||||||
3,946 | 2,028 | 1,643 | - | - | - | - | - | - | - | - |
Leasehold improvements related to lease incentives | ||||||||||
- | - | - | - | - | - | - | 1,359 | 0 | - | - |
Intellectual property acquisitions included in other current liabilities | ||||||||||
- | - | - | - | 800 | 550 | 450 | 0 | 0 | 1,389 | - |