Share Repurchase Program (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Repurchase Program [Abstract]
Authorized share repurchased program amount	$ 100.0
Repurchased shares (in shares)	0	0	0
Amount available under the share repurchase program	$ 82.4