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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2015 | Jun. 30, 2014
Cash flows from operating activities: |  |
Net loss | $ (17,046) | $ (26,396)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |
Depreciation and amortization | 2,979 | 4,041
Provision for bad debts, net of recoveries | (43) | 109
Provision for excess and obsolete inventory | 299 | 3,033
Share-based compensation expense | 1,973 | 1,239
Amortization of debt discount and debt issuance costs | 469 | 0
Changes in assets and liabilities, net of effects from acquisition: |  |
Accounts receivable | (5,832) | 14,241
Inventories | 7,904 | (1,262)
Prepaid expenses and other assets | 765 | 2,170
Accounts payable | (14,916) | 2,487
Accrued expenses, income taxes, and other | 4,268 | 1,375
Net cash provided by (used in) operating activities | (19,180) | 1,037
Cash flows from investing activities: |  |
Acquisition-related escrow | (88,274) | 0
Acquisition, net of cash acquired | (9,063) | 0
Purchases of property and equipment | (613) | (1,241)
Purchases of intangible assets | (224) | 0
Purchases of marketable securities | 0 | (826)
Marketable securities maturities / sales | 0 | 9,945
Net cash provided by (used in) investing activities | (98,174) | 7,878
Cash flows from financing activities: |  |
Gross proceeds from the issuance of convertible senior notes | 120,000 | 0
Payment of issuance costs related to convertible senior notes | (3,540) | 0
Proceeds from the exercise of warrant to purchase common stock | 8,644 | 0
Net repayments on revolving credit facility | (5,158) | 0
Payoff of acquisition-related assumed liabilities | (2,633) | 0
Principal repayments of short-term debt | 0 | (2,566)
Proceeds from stock option exercises and ESPP, net of taxes paid on vested restricted stock units | 315 | (284)
Net cash provided by (used in) financing activities | 117,628 | (2,850)
Effect of exchange rates on cash and cash equivalents | (214) | (51)
Net increase in cash and cash equivalents | 60 | 6,014
Cash and cash equivalents, beginning of period | 17,853 | 2,911
Cash and cash equivalents, end of period | 17,913 | 8,925
Cash paid during the year for: |  |
Interest | 106 | 6
Income taxes | $ 106 | $ 67

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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 3: 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 inflow associated with the amount received from holders exercising their stock warrants. + References No definition available. + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: 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=56944662&loc=d3e3602-108585 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt and payment of capital lease obligations. + References No definition available. + Details
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- Definition The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, 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=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + 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=56944662&loc=d3e3602-108585 + Details
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