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Consolidated Statements of Changes in Equity (USD $) In Thousands, unless otherwise specified | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2011 | $ 446,355 | $ 118,487 | $ 341,149 | $ 1,276,266 | $ (1,244,224) | $ (45,323)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Exercise of stock options and release of nonvested shares | 455 | 250 | 410 | 0 | (205) | 0
Net tax effect of options exercised and release of nonvested shares | (3,082) | 0 | (3,082) | 0 | 0 | 0
Stock-based compensation | 3,412 | 0 | 3,412 | 0 | 0 | 0
Dividends paid ($0.085 and $0.43 per share for six months ended June 30, 2013 and twelve months ended December 31, 2012, respectively) | (26,961) | 0 | 0 | (26,961) | 0 | 0
Treasury stock issued | 151 | 0 | (303) | 0 | 454 | 0
Purchase of treasury stock | (4,402) | 0 | 0 | 0 | (4,402) | 0
Net income (loss) | (83,353) | 0 | 0 | (83,353) | 0 | 0
Other comprehensive income | (4,411) | 0 | 0 | 0 | 0 | (4,411)
Balance at Dec. 31, 2012 | 328,164 | 118,737 | 341,586 | 1,165,952 | (1,248,377) | (49,734)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Exercise of stock options and release of nonvested shares | (233) | 326 | (152) | 0 | (407) | 0
Net tax effect of options exercised and release of nonvested shares | (1,103) | 0 | (1,103) | 0 | 0 | 0
Stock-based compensation | 3,491 | 0 | 3,491 | 0 | 0 | 0
Dividends paid ($0.085 and $0.43 per share for six months ended June 30, 2013 and twelve months ended December 31, 2012, respectively) | (5,368) | 0 | 0 | (5,368) | 0 | 0
Treasury stock issued | 37 | 0 | (98) | 0 | 135 | 0
Purchase of treasury stock | (1,049) | 0 | 0 | 0 | (1,049) | 0
Net income (loss) | 14,976 | 0 | 0 | 14,976 | 0 | 0
Other comprehensive income | 287 | 0 | 0 | 0 | 0 | 287
Balance at Jun. 30, 2013 | $ 339,202 | $ 119,063 | $ 343,724 | $ 1,175,560 | $ (1,249,698) | $ (49,447)

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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -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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