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Income Taxes (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Current |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ 19,804,000 | $ 13,163,000 | $ 21,040,000
State |  |  |  |  |  |  |  |  | 3,243,000 | 2,732,000 | 4,427,000
Foreign |  |  |  |  |  |  |  |  | 3,926,000 | 3,920,000 | 4,582,000
Deferred |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 3,646,000 | (544,000) | (574,000)
State |  |  |  |  |  |  |  |  | 404,000 | (98,000) | (358,000)
Foreign |  |  |  |  |  |  |  |  | (430,000) | 830,000 | (1,231,000)
Income tax expense (benefit) | 4,289,000 | 10,870,000 | 11,177,000 | 4,256,000 | (6,785,000) | 9,069,000 | 11,347,000 | 6,372,000 | 30,593,000 | 20,003,000 | 27,886,000
Income and loss from continuing operations before income taxes |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  | 74,912,000 | 65,705,000 | 68,961,000
Foreign |  |  |  |  |  |  |  |  | 6,652,000 | (3,784,000) | 9,825,000
Income before taxes | 11,957,000 | 30,876,000 | 29,679,000 | 9,051,000 | (902,000) | 22,045,000 | 27,206,000 | 13,573,000 | 81,564,000 | 61,921,000 | 78,786,000
Reconciliations between the statutory federal income tax rates and effective income tax rates |  |  |  |  |  |  |  |  |  |  |
Federal tax rate (as a percent) |  |  |  |  |  |  |  |  | 35.00% | 35.00% | 35.00%
State taxes, net of federal benefit (as a percent) |  |  |  |  |  |  |  |  | 3.00% | 2.90% | 3.40%
Tax benefit of domestic manufacturing deduction (as a percent) |  |  |  |  |  |  |  |  | (2.20%) | (2.10%) | (2.50%)
Change in valuation allowance (as a percent) |  |  |  |  |  |  |  |  | 1.30% | 6.00% | (0.30%)
Difference between United States statutory and foreign local tax rates (as a percent) |  |  |  |  |  |  |  |  | 0.10% | 2.60% | 0.30%
Change in uncertain tax position (as a percent) |  |  |  |  |  |  |  |  | (0.40%) | (0.30%) |
Worthless stock deduction on Irish subsidiary |  |  |  |  |  |  |  |  |  | (15.40%) |
Non-deductible goodwill write-off |  |  |  |  |  |  |  |  |  | 1.10% |
Non-deductible professional fee |  |  |  |  |  |  |  |  |  | 1.30% |
Other (as a percent) |  |  |  |  |  |  |  |  | 0.70% | 1.20% | (0.50%)
Effective income tax rate (as a percent) |  |  |  |  |  |  |  |  | 37.50% | 32.30% | 35.40%
Additional disclosures |  |  |  |  |  |  |  |  |  |  |
Tax benefit from worthless stock deduction |  |  |  |  |  |  |  |  |  | $ 9,900,000 |

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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the worthless stock deduction for the entity's investment in its wholly-owned Irish subsidiary. + References No definition available. + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration