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Consolidated Statement of Stockholders' Equity (USD $) | Total | Stockholders' Equity of the Company Preferred Stock [Member] | Stockholders' Equity of the Company Common Stock [Member] | Stockholders' Equity of the Company Treasury Stock [Member] | Stockholders' Equity of the Company Additional Paid-in Capital [Member] | Stockholders' Equity of the Company Accumulated Other Comprehensive Income (Loss) [Member] | Stockholders' Equity of the Company Retained Earnings [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance,value at Dec. 31, 2011 | $ 470,247,000 | $ 0 | $ 566,000 | $ (357,267,000) | $ 350,386,000 | $ (5,474,000) | $ 470,776,000 | $ 11,260,000
Preferred stock beginning balance, share at Dec. 31, 2011 | 0 | 0 |  |  |  |  |  |
Common stock beginning balance, share at Dec. 31, 2011 | 56,635,319 |  | 56,635,000 |  |  |  |  |
Net income | 23,065,000 |  |  |  |  |  | 21,204,000 | 1,861,000
Acquisition of noncontrolling interest | 941,000 |  |  |  |  |  |  | 941,000
Dividends distributed to noncontrolling interest | (720,000) |  |  |  |  |  |  | (720,000)
Foreign currency translation adjustments | 3,252,000 |  |  |  |  | 3,205,000 |  | 47,000
Derivatives valuation, net of tax | 8,816,000 |  |  |  |  | 8,816,000 |  |
Vesting of restricted stock units issued out of treasury, share |  |  | 475,000 |  |  |  |  |
Vesting of restricted stock units issued out of treasury, value | (3,824,000) |  | 5,000 | 6,626,000 | (10,455,000) |  |  |
Exercise of stock options, share |  |  | 63,000 |  |  |  |  |
Exercise of stock options, value | 770,000 |  | 1,000 | 879,000 | (110,000) |  |  |
Excess tax benefit from equity-based awards | (648,000) |  |  |  | (648,000) |  |  |
Equity-based compensation expense | 6,845,000 |  |  |  | 6,845,000 |  |  |
Purchases of common stock, share |  |  | (2,618,000) |  |  |  |  |
Purchases of common stock, value | (40,732,000) |  | (26,000) | (40,706,000) |  |  |  |
Other | 650,000 |  |  |  |  | 650,000 |  |
Ending balance,value at Jun. 30, 2012 | $ 468,662,000 | $ 0 | $ 546,000 | $ (390,468,000) | $ 346,018,000 | $ 7,197,000 | $ 491,980,000 | $ 13,389,000
Preferred stock ending balance, share at Jun. 30, 2012 | 0 | 0 |  |  |  |  |  |
Common stock ending balance, share at Jun. 30, 2012 | 54,555,105 |  | 54,555,000 |  |  |  |  |

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- Definition Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6921628&loc=SL4568740-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=6922042&loc=SL4590271-111686 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Name Accounting Research Bulletin (ARB) -Publisher AICPA -Number 51 -Paragraph 26 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6921628&loc=SL4568447-111683 + Details
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