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Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2011
Comprehensive Income [Abstract] |
Components of comprehensive income | The table below presents the components of comprehensive income for the past three years (in thousands):
|  | 2011 |  |  | 2010 |  |  | 2009 |
Net income | $ | 71,993 |  | $ | 57,638 |  | $ | 19,202 |
Foreign currency translation adjustments |  | (609 | ) |  | (2,170 | ) |  | 2,434 |
Unrealized gains on interest rate swaps (1) |  | 1,777 |  |  | 996 |  |  | 2,178 |
Comprehensive income | $ | 73,161 |  | $ | 56,464 |  | $ | 23,814 |
(1) | Amounts are shown net of tax.
Components of and changes in accumulated other comprehensive income (loss) | The table below presents the components of and changes in Accumulated other comprehensive income (loss) (in thousands):
|  | Foreign Currency Translation |  |  | Unrealized Gains (Losses) on Interest Rate Swaps (1) |  |  | Total |
Balance at December 31, 2009 | $ | 5,255 |  | $ | (3,029 | ) | $ | 2,226 |
Net change |  | (2,170 | ) |  | 996 |  |  | (1,174 | )
Balance at December 31, 2010 |  | 3,085 |  |  | (2,033 | ) |  | 1,052 |
Net change |  | (609 | ) |  | 1,777 |  |  | 1,168 |
Balance at December 31, 2011 | $ | 2,476 |  | $ | (256 | ) | $ | 2,220 |
(1) | Amounts are shown net of tax.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 220 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 45 -URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e526-108580 + Details
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