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Derivative and Nonderivative Hedging Instrument Fair Value Disclosure (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Asset Derivatives [Abstract] |  |
Gross Amounts of Recognized Assets Presented in the Consolidated Balance Sheets | $ 1,725 | $ 2,945
Liability Derivatives [Abstract] |  |
Total liability derivatives | 496 | 1,383
Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] |  |
Liability Derivatives [Abstract] |  |
Interest rate swap contracts | 114 | 934
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |
Asset Derivatives [Abstract] |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value | 62 | 169
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] |  |
Liability Derivatives [Abstract] |  |
Foreign exchange forward contracts | 382 | 449
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member] |  |
Asset Derivatives [Abstract] |  |
Interest Rate Derivative Assets, at Fair Value | 1,219 | 1,830
Interest Rate Cap [Member] | Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member] |  |
Asset Derivatives [Abstract] |  |
Interest Rate Derivative Assets, at Fair Value | 173 | 376
Interest Rate Cap [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |
Asset Derivatives [Abstract] |  |
Interest Rate Derivative Assets, at Fair Value | 5 | 3
Interest Rate Cap [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member] |  |
Asset Derivatives [Abstract] |  |
Interest Rate Derivative Assets, at Fair Value | 259 | 563
Interest Rate Cap [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |
Asset Derivatives [Abstract] |  |
Interest Rate Derivative Assets, at Fair Value | $ 7 | $ 4

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