Derivative Financial Instruments - Table of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Derivative
Fair Value, Liability	$ (4,735)	$ (2,370)
Fair Value, Asset	0	427
Interest rate swaps | 0.86%
Derivative
Notional Amount	$ 100,000	$ 100,000
Index	LIBOR	LIBOR
Rate	0.86%	0.86%
Fair Value, Liability	$ (76)	$ (142)
Interest rate swaps | 1.39%
Derivative
Notional Amount	$ 50,000	$ 50,000
Index	LIBOR	LIBOR
Rate	1.39%	1.39%
Fair Value, Liability	$ (860)	$ (71)
Interest rate swaps | 1.24%
Derivative
Notional Amount	$ 105,000	$ 105,000
Index	LIBOR	LIBOR
Rate	1.24%	1.24%
Fair Value, Liability	$ (1,270)
Fair Value, Asset		$ 427
Interest rate swaps | 4.98%
Derivative
Notional Amount	$ 25,892	$ 26,092
Index	LIBOR + 1.45%	LIBOR + 1.45%
Rate	4.98%	4.98%
Fair Value, Liability	$ (2,529)	$ (2,157)
Basis spread on variable rate	1.45%	1.45%