Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Nov. 01, 2016
Share Repurchase Program [Abstract]
Authorized share repurchased program amount		$ 100,000
Repurchased shares (in shares)	750,000
Cost of repurchased shares	$ (9,640)
Amount available under the share repurchase program	$ 90,400	$ 82,400
Treasury Stock Acquired, Average Cost Per Share	$ 12.83