Shareholders' Equity (Details) - USD ($) $ in Thousands	6 Months Ended	30 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	May 25, 2016	Dec. 31, 2015
Shareholders' Equity [Abstract]
Treasury Stock Value	$ 40,033	$ 40,033		$ 18,926
Stock Repurchase Program Authorized Percent Of Common Stock			5.00%
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			921,000
Treasury Stock, Shares, Acquired	1,336,387	2,457,945
Treasury Stock, Amount, Acquired	$ 21,000	$ 39,800