Debt - Summary of Interest Rate Swaps Included on Balance Sheets (Details 4) - Interest Rate Swap - Designated as Hedging Instrument - Cash Flow Hedge - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	$ 2
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Noncurrent	751
Accrued Liabilities
Interest rate swaps included on the balance sheet
Accrued expenses and other liabilities	0	$ 791
Other Noncurrent Liabilities
Interest rate swaps included on the balance sheet
Other long-term obligations	$ 0	$ (23)