CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Preferred Stock [Member]	Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2012	$ 165,546	$ 1,897	$ 48,746	$ 230,438	$ (118,611)	$ (62)	$ 3,138
Beginning Balance, shares at Dec. 31, 2012		18,967	2
Comprehensive income	38,507	$ 0	$ 0	0	51,989	0	(13,482)
Stock based compensation expense	246	0	0	246	0	0	0
Common stock issued for stock based employee benefit plans	148	$ 2	$ 0	95	0	51	0
Common stock issued for stock based employee benefit plans, shares		19	0
Issuance of common stock, net of related expense	46,976	$ 465	$ 0	46,511	0	0	0
Issuance of common stock, net of related expense, shares		4,652	0
Redemption of preferred stock	(50,000)	$ 0	$ (50,000)	0	0	0	0
Redemption of preferred stock, shares		0	(2)
Accretion on preferred stock discount	0	$ 0	$ 1,254	0	(1,254)	0	0
Ending Balance at Dec. 31, 2013	198,604	$ 2,364	$ 0	277,290	(70,695)	(11)	(10,344)
Ending Balance, shares at Dec. 31, 2013		23,638	0
Cash dividends on preferred shares	(2,819)	$ 0	$ 0	0	(2,819)	0	0
Comprehensive income	11,213	0	0	0	5,696	0	5,517
Stock based compensation expense	1,299	0	0	1,299	0	0	0
Common stock issued for stock based employee benefit plans	112	$ 1	$ 0	171	0	(60)	0
Common stock issued for stock based employee benefit plans, shares		147	0
Issuance of common stock, net of related expense	24,637	$ 233	$ 0	24,404	0	0	0
Issuance of common stock, net of related expense, shares		2,326	0
Issuance of common stock, pursuant to acquisition	76,787	$ 702	$ 0	76,085	0	0	0
Issuance of common stock, pursuant to acquisition, shares		7,026	0
Other	0	$ 0	$ 0	0	(1)	0	0
Ending Balance at Dec. 31, 2014	312,651	$ 3,300	$ 0	379,249	(65,000)	(71)	(4,827)
Ending Balance, shares at Dec. 31, 2014		33,137	0
Comprehensive income	20,755	$ 0	$ 0	0	22,141	0	(1,386)
Stock based compensation expense	2,859	0	0	2,859	0	0	0
Common stock issued for stock based employee benefit plans	15	$ 0	$ 0	17	0	(2)	0
Common stock issued for stock based employee benefit plans, shares		124	0
Issuance of common stock, pursuant to acquisition	17,172	$ 109	$ 0	17,063	0	0	0
Issuance of common stock, pursuant to acquisition, shares		1,090	0
Other	1	$ 26	$ 0	(26)	1	0	0
Ending Balance at Dec. 31, 2015	$ 353,453	$ 3,435	$ 0	$ 399,162	$ (42,858)	$ (73)	$ (6,213)
Ending Balance, shares at Dec. 31, 2015		34,351	0