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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |
Net income | $ 5,179 | $ 26,647
Adjustments to reconcile net income to net cash provided by (used in) operations: |  |
Depreciation and amortization expense | 1,422 | 1,917
Amortization of deferred rent | (110) | (41)
Stock-based compensation expense | 296 | 241
Provision for doubtful accounts | 69 | 25
Write-down of inventory to net realizable value | 996 | 1,235
Loss on disposal of assets | 49 | 0
Tax benefit from exercise of stock options | (104) | (2)
Changes in operating assets and liabilities: |  |
Receivables | (1,059) | 44
Inventories | (998) | 447
Deferred income taxes | (6) | (1,457)
Prepaid expenses and other assets | (1,251) | (652)
Accounts payable | 428 | (512)
Accrued liabilities | (408) | (130)
Income taxes payable | (14,782) | 14,492
Deferred product revenue | 565 | 189
Other long-term liabilities | (238) | 1,481
Net cash provided by (used in) operating activities | (9,952) | 43,924
Cash flows from investing activities: |  |
Purchase of property and equipment | (1,040) | (574)
Purchase of marketable securities | (25,502) | 0
Payment towards business acquisitions | 0 | (4,632)
Net cash used in investing activities | (26,542) | (5,206)
Cash flows from financing activities: |  |
Proceeds from the exercise of stock options | 489 | 490
Tax benefit from the exercise of stock options | 104 | 2
Treasury stock purchased | (2,416) | (384)
Net cash provided by (used in) financing activities | (1,823) | 108
Net increase (decrease) in cash and cash equivalents | (38,317) | 38,826
Cash and cash equivalents at the beginning of the period | 55,509 | 16,683
Cash and cash equivalents at the end of the period | 17,192 | 55,509
Supplemental disclosure of cash flow information: |  |
Cash paid for income taxes | 18,021 | 1,393
Supplemental disclosure of non-cash activities: |  |
Inventory | 0 | 40
Property and equipment | 0 | 34
Product warranty liability | 0 | (8)
Proprietary software | 0 | 2,247
Goodwill | 0 | 2,319
Cash paid | $ 0 | $ 4,632

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- Definition Amount of amortization of other deferred costs recognized in the income statement. + 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=31042434&loc=d3e3602-108585 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 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The other noncash expense, not otherwise specified in the taxonomy, charged against earnings in the period to allocate the cost of tangible and intangible assets over their remaining economic lives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: 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=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 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=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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