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Financial Instruments Measured at Fair Value - AFS (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items] |  |
Fair Value Measurement Contingent Consideration | $ 2,123 |
Marubun [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available For Sale Investment Ownership Percentage | 8.40% |
Cost basis | 10,016 | 10,016
Unrealized holding gain | 2,709 | (85)
Fair value, available-for-sale securities | 12,725 | 10,101
WPG [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available For Sale Investment Ownership Percentage | 1.90% |
Cost basis | 10,798 | 10,798
Unrealized holding gain | 24,903 | 29,784
Fair value, available-for-sale securities | 35,701 | 40,582
Mutual Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost basis | 15,614 | 15,271
Unrealized holding gain | 5,817 | 1,949
Fair value, available-for-sale securities | 21,431 | 17,220
Fair Value, Measurements, Recurring [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Fair value, available-for-sale securities | 69,857 | 67,903
Interest Rate Fair Value Hedge Asset at Fair Value |  | (10,832)
Foreign Currency Contracts, Liability, Fair Value Disclosure | (654) | (107)
Fair Value Measurement Contingent Consideration | (5,845) | (806)
Total Fair Value Assets And Liabilities Measured On Recurring Basis | 63,358 | 56,158
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Fair value, available-for-sale securities | 69,857 | 67,903
Interest Rate Fair Value Hedge Asset at Fair Value |  | 0
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0
Fair Value Measurement Contingent Consideration | 0 | 0
Total Fair Value Assets And Liabilities Measured On Recurring Basis | 69,857 | 67,903
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Fair value, available-for-sale securities | 0 | 0
Interest Rate Fair Value Hedge Asset at Fair Value |  | (10,832)
Foreign Currency Contracts, Liability, Fair Value Disclosure | (654) | (107)
Fair Value Measurement Contingent Consideration | 0 | 0
Total Fair Value Assets And Liabilities Measured On Recurring Basis | (654) | (10,939)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Fair value, available-for-sale securities | 0 | 0
Interest Rate Fair Value Hedge Asset at Fair Value |  | 0
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0
Fair Value Measurement Contingent Consideration | (5,845) | (806)
Total Fair Value Assets And Liabilities Measured On Recurring Basis | $ (5,845) | $ (806)

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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