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Consolidated Statement of Stockholders' Equity (USD $) In Thousands | Total | Common Stock | Additional paid-in capital | Accumulated comprehensive income (deficit)
--- | --- | --- | --- | ---
BALANCE at Dec. 31, 2009 | $ 187,979 | $ 33 | $ 183,756 | $ 4,190
BALANCE, Shares at Dec. 31, 2009 |  | 33,380 |  |
Exercise of common stock options, shares | 760 | 760 |  |
Exercise of common stock options | 7,255 | 1 | 7,254 |
Non cash compensation recognized on stock options and ESPP | 4,559 |  | 4,559 |
Restricted stock grants, net of cancellations, shares |  | 868 |  |
Restricted stock grants, net of cancellations | 4,937 | 1 | 4,936 |
Cancellation of shares for payment of withholding tax, shares |  | (37) |  |
Cancellation of shares for payment of withholding tax | (331) |  | (331) |
Tax benefit related to the exercise of stock options | 1,543 |  | 1,543 |
Tax benefit deficiencies related to restricted stock expense | (15) |  | (15) |
Comprehensive income (loss) | 12,338 |  |  | 12,338
BALANCE at Dec. 31, 2010 | 218,265 | 35 | 201,702 | 16,528
BALANCE, Shares at Dec. 31, 2010 |  | 34,971 |  |
Exercise of common stock options, shares | 7 | 7 |  |
Exercise of common stock options | 12 |  | 12 |
Non cash compensation recognized on stock options and ESPP | 973 |  | 973 |
Restricted stock grants, net of cancellations, shares |  | 575 |  |
Restricted stock grants, net of cancellations | 5,557 | 1 | 5,556 |
Cancellation of shares for payment of withholding tax, shares |  | (37) |  |
Cancellation of shares for payment of withholding tax | (303) |  | (303) |
Tax benefit deficiencies related to restricted stock expense | (426) |  | (426) |
Employee stock purchase plan, shares |  | 96 |  |
Employee stock purchase plan | 413 |  | 413 |
Comprehensive income (loss) | (159,631) |  |  | (159,631)
BALANCE at Dec. 31, 2011 | 64,860 | 36 | 207,927 | (143,103)
BALANCE, Shares at Dec. 31, 2011 |  | 35,612 |  |
Exercise of common stock options, shares | 32 | 32 |  |
Exercise of common stock options | 16 |  | 16 |
Non cash compensation recognized on stock options and ESPP | 66 |  | 66 |
Restricted stock grants, net of cancellations, shares |  | 574 |  |
Restricted stock grants, net of cancellations | 3,883 |  | 3,883 |
Cancellation of shares for payment of withholding tax, shares |  | (23) |  |
Cancellation of shares for payment of withholding tax | (40) |  | (40) |
Employee stock purchase plan, shares |  | 53 |  |
Employee stock purchase plan | 66 |  | 66 |
Shares repurchased and cancelled, shares |  | (375) |  |
Shares repurchased and cancelled | (753) |  | (753) |
Comprehensive income (loss) | (25,436) |  |  | (25,436)
BALANCE at Dec. 31, 2012 | $ 42,662 | $ 36 | $ 211,165 | $ (168,539)
BALANCE, Shares at Dec. 31, 2012 |  | 35,873 |  |

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- Definition The amount of tax deficiency associated with any equity-based compensation plan other than an employee stock ownership plan (ESOP) that is deducted from additional paid in capital. A tax deficiency results from the deductible amount for an award of an equity instrument on the entity's tax return being less than the cumulative compensation cost recognized for financial reporting purposes. This element should not be used to report tax deficiencies that are charged to income tax expense. + References No definition available. + Details
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- Definition The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) -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 -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 30 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=16317811 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e557-108580 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A5 -Appendix A + Details
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