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Consolidated Statement of Shareholders' Equity and Comprehensive Income (USD $) | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2008 | $ 413,075,000 | $ 79,000 | $ 73,280,000 | $ 345,225,000 | $ (5,509,000) |
Beginning Balance, Shares at Dec. 31, 2008 |  | 39,655,000 |  |  |  |
Issuance of common stock under stock option and stock purchase plans | 146,000 |  | 146,000 |  |  |
Issuance of common stock under stock option and stock purchase plans, Shares |  | 10,000 |  |  |  |
Stock-based compensation expense | 9,223,000 |  | 9,223,000 |  |  |
Stock option buyback | (9,158,000) |  | (9,158,000) |  |  |
Relief of deferred tax asset related to stock option buyback | (3,748,000) |  | (3,748,000) |  |  |
Excess tax benefit from stock option exercises | (472,000) |  | (472,000) |  |  |
Payment of dividends | (11,897,000) |  |  | (11,897,000) |  |
Comprehensive income loss: |  |  |  |  |  |
Net income (loss) | (4,869,000) |  |  | (4,869,000) |  | (4,869,000)
Net unrealized gain (loss) on available-for-sale investments, net of tax of $110, $185 and $123 respectively for 2009, 2010 and 2011 | (189,000) |  |  |  | (189,000) | (189,000)
Foreign currency translation adjustment, net of tax of $271, $149 and $238 respectively for 2009, 2010 and 2011 | 2,337,000 |  |  |  | 2,337,000 | 2,337,000
Comprehensive income (loss) |  |  |  |  |  | (2,721,000)
Ending Balance at Dec. 31, 2009 | 394,448,000 | 79,000 | 69,271,000 | 328,459,000 | (3,361,000) |
Ending Balance, Shares at Dec. 31, 2009 |  | 39,665,000 |  |  |  |
Issuance of common stock under stock option plans | 28,384,000 | 3,000 | 28,381,000 |  |  |
Issuance of common stock under stock option plans, Shares |  | 1,400,000 |  |  |  |
Stock-based compensation expense | 3,027,000 |  | 3,027,000 |  |  |
Excess tax benefit from stock option exercises | 1,941,000 |  | 1,941,000 |  |  |
Payment of dividends | (10,014,000) |  |  | (10,014,000) |  |
Comprehensive income loss: |  |  |  |  |  |
Net income (loss) | 61,381,000 |  |  | 61,381,000 |  | 61,381,000
Net unrealized gain (loss) on available-for-sale investments, net of tax of $110, $185 and $123 respectively for 2009, 2010 and 2011 | (507,000) |  |  |  | (507,000) | (507,000)
Foreign currency translation adjustment, net of tax of $271, $149 and $238 respectively for 2009, 2010 and 2011 | (5,349,000) |  |  |  | (5,349,000) | (5,349,000)
Comprehensive income (loss) |  |  |  |  |  | 55,525,000
Ending Balance at Dec. 31, 2010 | 473,311,000 | 82,000 | 102,620,000 | 379,826,000 | (9,217,000) |
Ending Balance, Shares at Dec. 31, 2010 | 41,065,000 | 41,065,000 |  |  |  |
Issuance of common stock under stock option plans | 30,863,000 | 3,000 | 30,860,000 |  |  |
Issuance of common stock under stock option plans, Shares | 1,501,000 | 1,495,000 |  |  |  |
Stock-based compensation expense | 8,068,000 |  | 8,068,000 |  |  |
Excess tax benefit from stock option exercises | 4,045,000 |  | 4,045,000 |  |  |
Tax benefit for research and development credits as a result of stock option accounting | 74,000 |  | 74,000 |  |  |
Repurchase of common stock | (10,000,000) | (1,000) | (9,999,000) |  |  |
Repurchase of common stock, Shares | (337,078) | (337,000) |  |  |  |
Payment of dividends | (15,114,000) |  |  | (15,114,000) |  |
Comprehensive income loss: |  |  |  |  |  |
Net income (loss) | 69,869,000 |  |  | 69,869,000 |  | 69,869,000
Net unrealized gain (loss) on available-for-sale investments, net of tax of $110, $185 and $123 respectively for 2009, 2010 and 2011 | 355,000 |  |  |  | 355,000 | 355,000
Foreign currency translation adjustment, net of tax of $271, $149 and $238 respectively for 2009, 2010 and 2011 | (8,491,000) |  |  |  | (8,491,000) | (8,491,000)
Comprehensive income (loss) |  |  |  |  |  | 61,733,000
Ending Balance at Dec. 31, 2011 | $ 552,980,000 | $ 84,000 | $ 135,668,000 | $ 434,581,000 | $ (17,353,000) |
Ending Balance, Shares at Dec. 31, 2011 | 42,223,000 | 42,223,000 |  |  |  |

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