Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Nov. 15, 2013
Derivative Instrument [Line Items]
Interest rate swap liability	$ 1,511	$ 2,042
Offset to accumulated other comprehensive income	854	1,154
November 2013 Agreement [Member]
Derivative Instrument [Line Items]
Notional amount of interest rate swap			$ 160,000
Derivative, fixed interest rate (as a percent)			5.384%
Derivative, basis spread on variable rate (as a percent)			3.50%
Level 2 [Member]
Derivative Instrument [Line Items]
Interest rate swap liability	$ 1,511	$ 2,042