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v3.5.0.2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
Cash flows from operating activities: |  |
Net loss | $ (14,470) | $ (23,711)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |
Depreciation and amortization | 3,717 | 4,673
Stock-based compensation | 8,481 | 8,638
Other non-cash items | 1,051 | 273
Changes in operating assets and liabilities: |  |
Accounts receivable, net | 17,535 | 7,723
Inventory | 2,846 | 1,861
Prepaid expenses and other assets | (479) | 44
Accounts payable | (2,668) | (3,048)
Accrued liabilities | 348 | (1,619)
Deferred revenue | 2,960 | 8,559
Other | (65) | 84
Net cash provided by operating activities | 19,256 | 3,477
Cash flows from investing activities: |  |
Purchases of marketable securities | (92,682) | 0
Proceeds from sales and maturities of marketable securities | 7,609 | 0
Payment for acquisition | (4,380) | 0
Purchases of property and equipment | (2,588) | (1,811)
Net cash used in investing activities | (92,041) | (1,811)
Cash flows from financing activities: |  |
Proceeds from issuance of common stock under employee equity incentive plans, net of repurchases | 3,350 | 2,626
Other | (50) | 0
Net cash provided by financing activities | 3,300 | 2,626
Net increase (decrease) in cash and cash equivalents | (69,485) | 4,292
Cash and cash equivalents—beginning of period | 98,117 | 91,905
Cash and cash equivalents—end of period | 28,632 | 96,197
Supplemental Disclosure of Non-Cash Investing and Financing Activities: |  |
Common stock issued under asset purchase agreement | 1,313 | 0
Inventory transfers to property and equipment | 1,112 | 1,187
Purchases of property and equipment included in accounts payable and accrued liabilities | $ 428 | $ 486

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