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Derivative Instruments - Balance Sheet Location (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Net amount of assets presented | $ 450 | $ 113
Net amount of liabilities presented | 244 | 97
Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Net amount of assets presented | 441 | 108
Designated as Hedging Instrument [Member] | Accrued Expenses [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Net amount of liabilities presented | 201 | 84
Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Net amount of assets presented | 9 | 5
Not Designated as Hedging Instrument [Member] | Accrued Expenses [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Net amount of liabilities presented | $ 43 | $ 13

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