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Shareholders' Equity (Tables) | 3 Months Ended
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Mar. 31, 2013
Stockholders' Equity Note [Abstract] |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] | The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2013 and 2012, respectively, as follows:
| Three Months Ended
| March 31,
| 2013 |  | 2012
Stock-based compensation expense | $ | 5,293 |  |  | $ | 4,033 |
Less: Deferred tax benefit | (1,916 | ) |  | (1,521 | )
Stock-based compensation expense, net of tax | $ | 3,377 |  |  | $ | 2,512 |
Schedule Of Reconciliation Of Noncontrolling Interest On The Consolidated Balance Sheet | The following table provides a reconciliation of Noncontrolling interest on the Consolidated Balance Sheet for the period from January 1, 2013 to March 31, 2013:
| Noncontrolling interest
Balance, January 1, 2013 | $ | 19,149 |
Net income attributable to noncontrolling interest | 350 |
Foreign currency translation adjustments | (451 | )
Sale of subsidiary (See Note 13) | (19,048 | )
Balance, March 31, 2013 | $ | — |
The following table provides a reconciliation of Noncontrolling interest on the Consolidated Balance Sheet for the period from January 1, 2012 to March 31, 2012:
| Noncontrolling interest
Balance, January 1, 2012 | $ | 16,143 |
Net income attributable to noncontrolling interest | 270 |
Foreign currency translation adjustments | 483 |
Balance, March 31, 2012 | $ | 16,896 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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