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v3.7.0.1

Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Operating activities |  |
Net loss | $ (33,161) | $ (27,841)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation | 1,525 | 1,502
Amortization of premium on investments | 613 | 695
Unrealized loss (gain) on short-term investments | 1 | (620)
Loss on disposal of property and equipment | (4) | 0
Stock-based compensation | 8,409 | 7,340
Tax benefit on unrealized gain on available-for-sale securities | 0 | (339)
Realized gain on sales of available-for-sale securities | (30) | 0
Changes in operating assets and liabilities: |  |
Accounts receivable | 3,200 | 9,468
Prepaid expenses and other current assets | (2,943) | (663)
Other assets | (833) | 358
Accounts payable | (3,273) | (4,978)
Accrued liabilities | (1,916) | (3,214)
Deferred revenue | 1,355 | 190
Lease financing liability | 335 | 136
Other long-term liabilities | (413) | 708
Net cash used in operating activities | (27,135) | (17,258)
Investing activities |  |
Purchases of property and equipment | (636) | (898)
Proceeds from sale of property and equipment | 5 | 0
Purchases of available-for-sale securities | (30) | (19)
Proceeds from sales of available-for-sale securities | 10,205 | 0
Proceeds from maturities of available-for-sale securities | 13,864 | 5,976
Net cash provided by investing activities | 23,408 | 5,059
Financing activities |  |
Repayments of lease liability | (101) | (101)
Cash paid for payroll taxes on restricted stock unit releases | (2,424) | (1,261)
Proceeds from issuance of common stock | 3,099 | 1,213
Net cash provided by (used in) financing activities | 574 | (149)
Effect of exchange rate change on cash and cash equivalents | (31) | (17)
Net decrease in cash and cash equivalents | (3,184) | (12,365)
Total cash and cash equivalents at beginning of period | 173,782 | 153,324
Total cash and cash equivalents at end of period | $ 170,598 | $ 140,959

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- Definition This item represents the tax effects occurring during the period which are related to the net unrealized gain (loss) resulting from changes in the fair [carrying] value during the period of available-for-sale securities. Such tax affects would have been charged or credited directly to other comprehensive income or to related components of shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65896914&loc=d3e39076-109324 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: 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=66902209&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=66902209&loc=d3e3602-108585 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period. + 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 (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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