Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest income:
Loans receivable, including fees	$ 146,388	$ 82,580	$ 70,510
Loans held for sale	30,801	38,140	15,950
Investment securities	10,386	6,314	6,731
Other	2,852	1,122	623
Total interest income	190,427	128,156	93,814
Interest expense:
Deposits	24,454	21,020	21,076
Other borrowings	5,342	2,024	10
FHLB advances	5,194	1,192	606
Subordinated debt	3,514	65	69
Total interest expense	38,504	24,301	21,761
Net interest income	151,923	103,855	72,053
Provision for loan losses	14,747	2,236	14,270
Net interest income after provision for loan losses	137,176	101,619	57,783
Non-interest income:
Mortgage warehouse transactional fees	8,233	12,962	12,289
Bank-owned life insurance	3,702	2,482	1,332
Gains on sales of investment securities	3,191	1,274	9,017
Gains on sales of loans	3,125	852	357
Mortgage loan and banking income	2,048	1,142	0
Deposit fees	801	675	481
Other	4,026	3,316	5,482
Total non-interest income	25,126	22,703	28,958
Non-interest expense:
Salaries and employee benefits	46,427	35,493	23,846
FDIC assessments, taxes, and regulatory fees	11,812	5,568	3,037
Occupancy	11,010	8,829	6,816
Professional services	7,748	5,548	3,468
Technology, communication and bank operations	5,856	4,330	2,805
Other real estate owned	3,601	1,365	(85)
Loan workout	1,706	2,245	2,243
Advertising and promotion	1,325	1,274	1,219
Loss contingency	0	2,000	0
Stock offering expenses	0	0	1,437
Other	9,429	7,372	5,865
Total non-interest expense	98,914	74,024	50,651
Income before income tax expense	63,388	50,298	36,090
Income tax expense	20,174	17,604	12,272
Net income	$ 43,214	$ 32,694	$ 23,818
Basic earnings per common share	$ 1.62	$ 1.34	$ 1.61
Diluted earnings per common share	$ 1.55	$ 1.30	$ 1.57