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v3.4.0.3

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Cash flows from operating activities: |  |
Net loss | $ (47,473) | $ (35,801)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization of fixed assets | 2,473 | 1,587
Stock-based compensation | 6,100 | 3,620
Amortization of other liabilities | (208) | (58)
Amortization of deferred financing costs | 13 |
Amortization of premium on short-term investments | 214 | 377
Amortization of intangible assets | 50 |
Changes in assets and liabilities: |  |
Accounts receivable, net | (688) | (205)
Inventory, net | (1,480) | (1,406)
Prepaid expenses and other current assets | (347) | (364)
Accounts payable | (467) | (646)
Accrued liabilities | (664) | (2,309)
Lease incentive obligation | 130 | (138)
Accrued interest |  | 6
Net cash used in operating activities | (42,347) | (35,337)
Cash flows from investing activities: |  |
Purchases of marketable securities | (6,118) | (11,145)
Maturities of marketable securities | 61,680 | 31,116
Purchases of property and equipment | (2,389) | (2,371)
Net cash used in investing activities | 53,173 | 17,600
Cash flows from financing activities: |  |
Proceeds from exercise of common stock options | 288 | 386
Payments on capital lease obligations |  | (91)
Payments on mortgage payable | (41) |
Net cash provided by financing activities | 247 | 295
Effects of exchange rate on cash and cash equivalents | (57) | (10)
Net increase (decrease) in cash and cash equivalents | 11,016 | (17,452)
Cash and cash equivalents, beginning of period | 41,135 | 58,131
Cash and cash equivalents, end of period | 52,151 | 40,679
Supplemental disclosure of non-cash investing and financing activities: |  |
Property and equipment acquired but not paid | 1,034 | 836
Unrealized gain on available-for-sale investments | 473 | 195
Issuance of 340,950 and 21,826 shares of common stock to fund the Company’s 401(k) matching contribution for 2015 and 2014, respectively | 2,146 | 835
Interest paid | $ 53 | $ 4

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X
- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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