Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest and dividend income:
Interest and fees on loans	$ 131,253	$ 134,476	$ 139,048
Interest and dividends on investment securities	38,145	48,651	53,945
Dividends on non-marketable securities	1,210	1,206	1,559
Interest on interest-bearing bank deposits	799	329	923
Total interest and dividend income	171,407	184,662	195,475
Interest expense:
Interest on deposits	13,609	14,120	16,393
Interest on borrowings	853	293	121
Total interest expense	14,462	14,413	16,514
Net interest income before provision for loan losses	156,945	170,249	178,961
Provision for loan losses	12,444	6,209	4,296
Net interest income after provision for loan losses	144,501	164,040	174,665
Non-interest income:
Service charges	14,798	15,430	15,955
Bank card fees	10,898	10,123	9,956
Gain on sales of mortgages, net	1,963	1,000	1,358
Bank-owned life insurance income	1,614	442
Other non-interest income	3,692	3,368	2,901
Bargain purchase gain	1,048
Gain on previously charged-off acquired loans	609	737	1,339
OREO related write-ups and other income	2,379	3,807	4,817
FDIC indemnification asset amortization, net of gain on termination	(15,878)	(27,741)	(18,960)
FDIC loss sharing income (expense)	325	(8,862)	2,811
Total non-interest income	21,448	(1,696)	20,177
Non-interest expense:
Salaries and benefits	83,018	82,834	90,002
Occupancy and equipment	24,490	25,101	24,700
Telecommunications and data processing	11,507	11,927	13,073
Marketing and business development	4,325	4,571	5,280
FDIC deposit insurance	3,922	4,130	4,122
ATM/debit card expenses	3,701	3,079	4,262
Professional fees	4,495	3,257	3,734
Other non-interest expense	11,107	10,471	12,636
Problem asset workout	4,541	(1,868)	16,601
Intangible asset amortization	5,401	5,344	5,346
Loss (gain) from the change in fair value of warrant liability	106	(2,953)	820
Banking center closure related expenses	1,411		3,389
Contract termination expenses		4,110
Total non-interest expense	158,024	150,003	183,965
Income before income taxes	7,925	12,341	10,877
Income tax expense	3,044	3,165	3,950
Net income	$ 4,881	$ 9,176	$ 6,927
Income per share-basic (in dollars per share)	$ 0.14	$ 0.22	$ 0.14
Income per share-diluted (in dollars per share)	$ 0.14	$ 0.22	$ 0.14
Weighted average number of common shares outstanding:
Basic (Shares)	34,349,996	42,404,609	50,790,410
Diluted (Shares)	34,363,487	42,421,014	50,824,422