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Income Taxes (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
U.S. and foreign income before income taxes |  |  |
United States | $ 31,823,000 | $ 49,021,000 | $ 56,836,000
Foreign | 214,842,000 | 190,574,000 | 181,367,000
Income before income taxes | 246,665,000 | 239,595,000 | 238,203,000
Current: |  |  |
U.S. federal statutory tax | 8,167,000 | 6,858,000 | 7,685,000
State | 1,822,000 | 938,000 | 2,767,000
Foreign | 36,254,000 | 24,649,000 | 27,514,000
Total current income tax provision (benefit) | 46,243,000 | 32,445,000 | 37,966,000
Deferred: |  |  |
U.S. federal statutory tax | 2,171,000 | 7,642,000 | 6,218,000
State | 566,000 | 1,380,000 | 2,194,000
Foreign | (10,980,000) | 643,000 | (6,771,000)
Total deferred income (loss) before income taxes | (8,243,000) | 9,665,000 | 1,641,000
Non-current tax expense (income) | 1,505,000 | (3,866,000) | (606,000)
Income tax provision | 39,505,000 | 38,244,000 | 39,001,000
Reconciliation of U.S. federal statutory income tax rate to effective income tax rate |  |  |
U.S. federal statutory tax rate (as a percent) | 35.00% | 35.00% | 35.00%
Foreign earnings, net of foreign taxes (as a percent) | (18.70%) | (16.70%) | (18.70%)
State income taxes, net of U.S. federal income tax benefit (as a percent) | 0.60% | 0.60% | 1.30%
Other permanent differences (as a percent) | (0.90%) | (2.90%) | (1.20%)
Effective income tax rate (as a percent) | 16.00% | 16.00% | 16.40%
Earnings attributable to foreign subsidiaries | 1,100,000,000 | 934,500,000 |
Amount of income tax liability accrued | $ 0 | $ 0 |

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Data Type: | xbrli:monetaryItemType
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Period Type: | instant