CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest income
Interest and fees on loans	$ 49,191	$ 38,618
Interest on taxable securities	4,583	3,153
Interest on nontaxable securities	446	469
Interest on deposits in other banks and federal funds sold	336	128
Total interest income	54,559	42,368
Interest expense
Interest on deposits	2,741	2,280
Interest on other borrowings	1,382	1,256
Total interest expense	4,123	3,536
Net interest income	50,436	38,832
Provision for loan losses	681	1,069
Net interest income after provision for loan losses	49,755	37,763
Noninterest income
Service charges on deposit accounts	9,915	6,429
Mortgage banking activity	10,211	8,083
Other service charges, commissions and fees	1,111	668
Gain on sale of securities	94	12
Other noninterest income	2,955	2,383
Total noninterest income	24,286	17,575
Noninterest expense
Salaries and employee benefits	26,187	20,632
Occupancy and equipment expense	5,700	4,554
Advertising and marketing expense	805	641
Amortization of intangible assets	1,020	630
Data processing and communications costs	6,113	4,260
Credit resolution related expenses	1,799	3,161
Merger and conversion charges	6,359	15
Other noninterest expenses	7,617	6,934
Total noninterest expense	55,600	40,827
Income before income tax expense	18,441	14,511
Income tax expense	6,124	4,747
Net income	12,317	9,764
Other comprehensive income
Unrealized holding gains arising during period on investment securities available for sale, net of tax of $2,011 and $350	3,734	650
Reclassification adjustment for gains included in earnings, net of tax of $33 and $4	(61)	(8)
Unrealized loss on cash flow hedges arising during period, net of tax of $331 and $208	(615)	(387)
Other comprehensive income	3,058	255
Total comprehensive income	$ 15,375	$ 10,019
Basic earnings per common share (in dollars per share)	$ 0.38	$ 0.32
Diluted earnings per common share (in dollars per share)	0.37	0.32
Dividends declared per common share (in dollars per share)	$ 0.05	$ 0.05
Weighted average common shares outstanding
Basic (in shares)	32,752	30,443
Diluted (in shares)	33,054	30,796