Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Tax benefit, issuance of stock under purchase and equity compensation plans	$ 24	$ 7	$ 24
Gains on reissuance of treasury stock	$ 96
Common Stock Purchased	8,645,836	6,076,558	7,421,179
Treasury Stock, Shares, Retired			7,421,419
Dividends paid per share	$ 0.2	$ 0.2	$ 0.2