| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'13 | |
|---|---|---|---|---|---|---|
Operating Activities: | ||||||
Net loss | ||||||
-36,320 | -31,261 | -26,826 | -61,111 | - | - | |
Net loss | ||||||
- | - | - | - | -35,908 | 36,181 | |
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: | ||||||
Depreciation | ||||||
55 | 88 | 152 | 433 | 201 | 322 | |
Stock-based compensation | ||||||
3,270 | 2,730 | 3,522 | 3,346 | 3,258 | 745 | |
Accretion on marketable securities, net | ||||||
515 | 440 | 150 | 150 | -46 | - | |
Amortization of right-of-use asset | ||||||
319 | - | - | - | - | - | |
Benefit for deferred income taxes | ||||||
-22 | 16 | -884 | -16 | -30 | -57 | |
Non-cash interest expense | ||||||
- | 5 | 131 | 246 | 349 | - | |
Non-cash restructuring charges | ||||||
- | - | - | 1,474 | - | - | |
Non-cash interest expense | ||||||
- | - | - | - | - | 158 | |
Change in fair value of Series C redeemable convertible preferred stock warrant liability | ||||||
- | - | - | - | - | 60 | |
Loss on disposal of property and equipment | ||||||
-29 | - | - | -67 | 5 | -221 | |
Changes in operating assets and liabilities: | ||||||
Prepaid expenses and other current assets | ||||||
1,420 | -471 | -820 | -674 | 1,737 | -173 | |
Insurance recovery (Note 12) | ||||||
-18,288 | - | - | - | - | - | |
Accounts payable and accrued expenses | ||||||
111 | 4,349 | -1,616 | 1,805 | 496 | - | |
Settlement liability (Note 12) | ||||||
-18,750 | - | - | - | - | - | |
Accounts payable | ||||||
- | - | - | - | - | 1,032 | |
Accrued expenses | ||||||
- | - | - | - | - | 4,355 | |
Deferred revenue and customer advances | ||||||
- | - | - | - | - | 2,883 | |
Other assets | ||||||
107 | -9 | -402 | 14 | 171 | -24 | |
Other current and long-term liabilities | ||||||
50 | -58 | 25 | 1,282 | 198 | - | |
Net cash used in operating activities | ||||||
-35,012 | -24,091 | -24,424 | -51,964 | - | - | |
Investing Activities: | ||||||
Long-term liabilities | ||||||
- | - | - | - | - | 97 | |
Net cash used in operating activities | ||||||
- | - | - | - | -33,303 | 46,194 | |
Purchases of marketable securities | ||||||
99,726 | 38,010 | 89,163 | 117,146 | 108,236 | - | |
Maturities of marketable securities | ||||||
64,376 | 62,227 | 92,898 | 169,006 | 500 | - | |
Decrease in value of other assets | ||||||
- | - | - | - | 1,119 | - | |
Increase (decrease) in value of other assets | ||||||
- | - | - | - | - | 6 | |
Purchases of property and equipment | ||||||
307 | 6 | 23 | 2,964 | 269 | 23 | |
Proceeds from sale of property and equipment | ||||||
- | - | - | 137 | 12 | 11 | |
Net cash provided by investing activities | ||||||
-35,657 | 24,211 | 3,712 | 49,033 | - | - | |
Financing Activities: | ||||||
Repayment of long-term debt | ||||||
- | - | - | - | - | 11,088 | |
Redemption of Series D redeemable convertible preferred stock | ||||||
- | - | - | - | - | 54,955 | |
Proceeds from the issuance of common stock, net | ||||||
84,576 | - | - | - | 106,524 | - | |
Proceeds from issuance of restricted stock | ||||||
- | - | - | - | 382 | - | |
Exercise of warrants | ||||||
- | - | - | 5 | 14 | - | |
Exercise of stock options | ||||||
50 | 37 | 2 | 600 | 684 | 28 | |
Net cash provided by (used in) investing activities | ||||||
- | - | - | - | -109,112 | -18 | |
Payments under license termination agreement | ||||||
- | 1,700 | 1,700 | 1,700 | - | - | |
Proceeds from short-term borrowing | ||||||
1,675 | - | - | - | - | - | |
Payments of short-term borrowing | ||||||
837 | - | - | - | - | - | |
Net cash provided by (used in) financing activities | ||||||
85,464 | -1,663 | -1,698 | -1,095 | - | - | |
Net increase (decrease) in cash and cash equivalents | ||||||
14,795 | -1,543 | -22,410 | - | - | - | |
Net cash used in financing activities | ||||||
- | - | - | - | 143,294 | -51,816 | |
Net increase (decrease) in cash and cash equivalents | ||||||
- | - | - | -4,026 | 879 | -5,640 | |
Supplemental disclosures of cash flow information: | ||||||
Conversion of preferred stock | ||||||
- | - | - | - | 139,017 | - | |
Conversion of warrants into Series C redeemable convertible preferred stock | ||||||
- | - | - | - | - | 191 | |
Cash paid for income taxes | ||||||
380 | 333 | 51 | 140 | - | - | |
Cash paid for interest | ||||||
- | - | - | - | - | 921 | |
Cash paid for income taxes | ||||||
- | - | - | - | 69 | 1,176 | |
Cash received for interest | ||||||
- | - | - | - | 33 | - | |