Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in dollars per share)	$ 0.50	$ 0.41	$ 0.34
Payments of Stock Issuance Costs	$ 179	$ 719