Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]
Tax benefit, issuance of stock under purchase and equity compensation plans	$ 39	$ 8
Gain (loss) on reissuance of treasury stock	$ (50)
Shares repurchased (shares)	1,671,923	3,894,673
Dividends paid per share	$ 0.1	$ 0.1