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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
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Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Available-for-sale securities | $ 52,614 | $ 36,711
Total | 33,664 | 21,218
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Available-for-sale securities | 52,614 | 36,711
Total | 52,614 | 36,711
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Total | (18,950) | (15,493)
Foreign currency forward contracts [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Derivative Assets (Liabilities) | 486 | (1,759)
Foreign currency forward contracts [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Derivative Assets (Liabilities) | 486 | (1,759)
Interest Rate Swap [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Derivative Assets (Liabilities) | (19,436) | (13,734)
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Derivative Assets (Liabilities) | $ (19,436) | $ (13,734)

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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=65884222&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=73527792&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=66010992&loc=d3e26610-111562 + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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