Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Notional amount	$ 133,707	$ 0
Other Current Assets
Derivative [Line Items]
Derivative asset	1	0
Other Long Term Assets
Derivative [Line Items]
Derivative asset	962	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate cap premiums
Derivative [Line Items]
Notional amount	133,707	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate cap premiums | Other Current Assets
Derivative [Line Items]
Derivative asset	1	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate cap premiums | Other Long Term Assets
Derivative [Line Items]
Derivative asset	$ 962	$ 0