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v3.8.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash flows from operating activities: |  |  |
Net income | $ 31,816 | $ 32,547 | $ 30,758
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 4,290 | 3,734 | 3,775
Loss on disposal of fixed assets | 150 |  |
Stock-based compensation expense | 5,807 | 3,392 | 2,225
Deferred income taxes | (1,198) | (65) | (747)
Provision for doubtful accounts | 1,609 | 52 | 38
Provision for inventory | 695 | 654 | 210
Non-cash impairment charges for IPR&D |  |  | 697
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 2,674 | (6,201) | (4,996)
Inventories | (6,521) | (1,738) | (2,939)
Prepaid expenses, other current and long-term assets | (1,454) | (898) | 89
Accounts payable | 3,890 | (5,059) | 5,625
Accrued expenses and other current liabilities | (605) | 1,566 | (199)
Income taxes payable | 367 | (3,552) | 5,484
Other long-term liabilities | (708) | 16 | (109)
Net cash provided by operating activities | 40,812 | 24,448 | 39,911
Cash flows from investing activities: |  |  |
Proceeds from maturity of investments | 41,500 | 46,500 | 24,250
Purchase of investments | (45,000) | (39,249) | (45,251)
Purchase of property and equipment, net | (8,980) | (14,014) | (9,225)
Net cash used in investing activities | (12,480) | (6,763) | (30,226)
Cash flows from financing activities: |  |  |
Repurchase of common stock |  | (25,000) |
Proceeds from exercise of equity awards | 314 | 1,007 | 1,074
Net cash (used in) provided by financing activities | 314 | (23,993) | 1,074
Exchange rate impact on cash | 349 | (138) | (208)
Increase (Decrease) in cash and cash equivalents | 28,995 | (6,446) | 10,551
Cash and cash equivalents at beginning of period | 104,261 | 110,707 | 100,156
Cash and cash equivalents at end of period | 133,256 | 104,261 | 110,707
Supplemental disclosure of cash flow information: |  |  |
Cash paid for income taxes | 15,088 | 22,826 | 12,724
Non-cash Investing Activities: |  |  |
Purchases of property and equipment included in accounts payable and accrued expenses | 1,891 | 1,257 | 1,949
Build-to-suit lease agreement | $ 0 | $ 1,723 | $ 30

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- Definition Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + 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 606 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044 Reference 2: 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=63488584&loc=d3e20235-122688 Reference 3: 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=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 + 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=98514028&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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