Summary of Significant Accounting Policies (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2017
USD ($)
company
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Dec. 31, 2016
USD ($)
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Dec. 31, 2015
USD ($)
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| Summary Of Significant Accounting Policies [Line Items] | |||
| Number of operating companies under parent company | company | 3 | ||
| Foreign currency transaction adjustments | $ 5,000 | $ 5,000 | $ (11,000) |
| Contributions by employer for employee savings plans | 6,000 | 7,000 | 6,000 |
| Undistributed earnings of foreign subsidiaries | 0 | 537,000 | 436,000 |
| Derivative Liability, Notional Amount | $ 97,000 | ||
| Derivative, Fixed Interest Rate | 5.3075% | ||
| Release of deposit account funds to terminate interest rate swap | $ 0 | $ 21,868 | $ 0 |
| Maximum [Member] | |||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Cash and cash equivalents maturity, days | 90 days | ||
| X | ||||||||||
- Definition The original maturity of an instrument classified as cash or a cash equivalent. No definition available.
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- Definition Amount of cash collateral deposit disbursements related to termination of interest rate swaps. No definition available.
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- Definition Number of operating companies under parent company. No definition available.
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- Definition Summary Of Significant Accounting Policies [Line Items] No definition available.
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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- Definition Fixed interest rate related to the interest rate derivative. No definition available.
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- Definition Nominal or face amount used to calculate payments on the derivative liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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