Fair Value (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Fair Value [Abstract]
Interest rate swap notional amount	$ 168,200		$ 168,200		$ 172,500
Fixed interest rate	1.4935%		1.4935%
Fair value of interest rate swap	$ 4,700		$ 4,700		$ 0
Unrealized loss on interest rate swap			(4,700)
Unrealized loss on interest rate swap, net of tax	$ (667)	$ 0	$ (2,899)	$ 0