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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income | $ 28,001 | $ 21,786
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation | 8,469 | 8,521
Amortization of intangibles | 3,178 | 3,439
Loss on disposal of property and equipment | 38 | 148
Stock-based compensation expense | 11,296 | 9,428
Amortization of premium on marketable securities | 508 | 429
Deferred income taxes | (648) | 225
Increase in accounts receivable allowances | 80 | 193
Change in operating assets and liabilities: |  |
Accounts receivable | (12,249) | (6,252)
Inventories | 132 | 5,185
Prepaid expenses and other assets | (8,349) | (674)
Accounts payable | (3,629) | 3,039
Taxes payable and accrued liabilities | 3,208 | (1,566)
Net cash provided by operating activities | 30,035 | 43,901
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (22,876) | (4,890)
Purchases of marketable securities | (111,574) | (66,211)
Proceeds from maturities of marketable securities | 78,140 | 52,921
Net cash used in investing activities | (56,310) | (18,180)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Issuance of common stock under employee stock plans | 5,089 | 3,448
Repurchase of common stock | 0 | (6,435)
Payments of dividends to stockholders | (8,299) | (7,483)
Net cash used in financing activities | (3,210) | (10,470)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (29,485) | 15,251
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 62,134 | 90,092
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 32,649 | 105,343
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |
Unpaid property and equipment | 5,851 | 1,140
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Cash paid (refund) for income taxes, net | $ (1,775) | $ 4,564

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- Definition The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + 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 (a),(b) -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 -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562 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 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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- References No definition available. + Details
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