|
Statement of Cash Flows (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Cash flows from operating activities: |
|
|
|
| Net loss |
$ (24,958) |
$ (22,264) |
$ (21,344) |
| Adjustments to reconcile net loss to net cash used in operating activities: |
|
|
|
| Depreciation |
800 |
1,086 |
1,109 |
| Amortization of licenses, patents and other agreements |
522 |
347 |
257 |
| Amortization of debt issuance costs and debt discount |
50 |
0 |
0 |
| Loss (gain) on disposal of assets |
0 |
6 |
(3) |
| Stock-based compensation |
1,615 |
1,097 |
902 |
| Gain on revaluation of warrants |
(20) |
0 |
0 |
| Changes in operating assets and liabilities: |
|
|
|
| Accounts receivable |
(660) |
(1,735) |
178 |
| Inventories |
(1,503) |
344 |
(423) |
| Prepaid expenses and other current assets |
(302) |
(322) |
(31) |
| Accounts payable |
614 |
(87) |
(338) |
| Accrued liabilities |
1,558 |
288 |
282 |
| Accrued interest |
115 |
0 |
13 |
| Deferred revenue |
869 |
236 |
166 |
| Net cash used in operating activities |
(21,300) |
(21,004) |
(19,232) |
| Cash flows from investing activities: |
|
|
|
| Purchases of property and equipment |
(1,817) |
(132) |
(558) |
| Payments to acquire licenses |
(404) |
(2,395) |
(373) |
| Net cash used in investing activities |
(2,221) |
(2,527) |
(931) |
| Cash flows from financing activities: |
|
|
|
| Repayments of debt |
(1,055) |
(434) |
(268) |
| Proceeds from debt |
12,000 |
0 |
0 |
| Payments of debt issuance costs |
(222) |
0 |
0 |
| Proceeds from exercise of stock options |
155 |
151 |
26 |
| Proceeds from issuance of preferred stock |
0 |
20,985 |
29,925 |
| Proceeds from issuance of common stock, net of offering costs |
40,772 |
0 |
0 |
| Net cash provided by financing activities |
51,650 |
20,702 |
29,683 |
| Net increase (decrease) in cash and cash equivalents |
28,129 |
(2,829) |
9,520 |
| Cash and cash equivalents — Beginning of period |
33,900 |
36,729 |
27,209 |
| Cash and cash equivalents — End of period |
62,029 |
33,900 |
36,729 |
| Supplemental disclosure of cash flow information — |
|
|
|
| Cash paid for interest |
545 |
36 |
31 |
| Supplemental information on noncash activities: |
|
|
|
| Issuance of stock options for intangible assets |
70 |
0 |
215 |
| Warrants issued with long-term debt |
261 |
0 |
0 |
| Property and equipment not yet paid |
162 |
0 |
0 |
| Licenses not yet paid |
25 |
0 |
0 |
| Accrued interest converted to principal |
0 |
66 |
0 |
| Fixed asset trade in credit |
0 |
0 |
14 |
| Accrued royalty applied to payment for license |
$ 0 |
$ 0 |
$ 50 |