CONSOLIDATED STATEMENT OF CHANGESIN SHAREHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Exercise of stock options, shares tendered in payment of exercise price	196,518	43,535	224,601
Preferred Stock
Underwriting discount and expenses	$ 1,972	$ 2,531	$ 6,383