Share Repurchase Program - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share Repurchase Program [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	3,000		3,000
Stock Repurchased and Retired During Period, Shares	245	363	615	933
Shares available for future repurchase	711		711
Stock Repurchased During Period, Value	$ 3,344	$ 4,411	$ 8,045	$ 11,197
StockRepurchasedAndRetired-AveragePricePerShare	$ 13.63	$ 12.17	$ 13.07	$ 12.01