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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income | $ 20,884 | $ 9,980
Adjustments to reconcile net income to net cash provided by (used in) by operating activities: |  |
Provision for doubtful accounts | 39 | (101)
Depreciation and amortization | 3,028 | 3,204
Share-based compensation expense | 2,001 | 1,917
Loss on sale of property and equipment | 23 | 14
Deferred income taxes | (307) | (4,419)
Amortization of bond discount | 3 | 13
Purchase of trading investment securities | (60) | (59)
Proceeds from sale of trading investment securities | 268 | 338
Realized and unrealized (gains) losses on investments | (63) | 25
Foreign exchange losses | 856 | 106
Changes in assets and liabilities: |  |
Accounts receivable | (429) | (5,691)
Inventories | (1,926) | (2,313)
Prepaid expenses and other current assets | (1,021) | 607
Other assets | (148) | (2,155)
Accounts payable | (361) | 428
Accrued volume incentives | 386 | 1,224
Accrued liabilities | (1,264) | (4,554)
Deferred revenue | 403 | (343)
Income taxes payable | (4,222) | 848
Liability related to unrecognized tax benefits | (654) | (2,834)
Deferred compensation payable | (112) | (355)
Net cash provided by (used in) operating activities | 17,324 | (4,120)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property, plant and equipment | (5,617) | (1,117)
Proceeds from sale of property, plant and equipment | 25 |
Proceeds from maturity and sale of investments available for sale | 3,689 | 5,650
Purchase of investments available for sale | (197) | (3,867)
Net cash provided by (used in) investing activities | (2,100) | 666
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from the issuance of long-term debt |  | 10,000
Principal payments of long-term debt | (2,465) |
Dividends paid | (1,560) |
Proceeds from the exercise of stock options | 1,982 | 372
Net cash provided by (used in) financing activities | (2,043) | 10,372
Effect of exchange rates on cash and cash equivalents | 393 | (419)
Net increase in cash and cash equivalents | 13,574 | 6,499
Cash and cash equivalents at the beginning of the period | 58,969 | 47,604
Cash and cash equivalents at the end of the period | 72,543 | 54,103
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Cash paid for income taxes | 12,694 | 7,851
Cash paid for interest | $ 97 |

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- Definition Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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=6943989&loc=d3e3602-108585 Reference 4: 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=6880815&loc=d3e20235-122688 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 Reference 3: 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=6943989&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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 Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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=6943989&loc=d3e3602-108585 + Details
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