Consolidated Statements of Income - Unaudited - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Loans receivable, including fees	$ 74,238	$ 67,036	$ 141,117	$ 128,497
Loans held for sale	21,002	17,524	40,054	31,470
Investment securities	9,765	7,823	18,437	13,710
Other	2,634	1,469	4,996	3,269
Total interest income	107,639	93,852	204,604	176,946
Interest expense:
Deposits	24,182	16,228	43,975	30,551
Other borrowings	3,275	1,993	6,651	3,600
FHLB advances	11,176	5,340	18,256	8,401
Subordinated debt	1,684	1,685	3,369	3,370
Total interest expense	40,317	25,246	72,251	45,922
Net interest income	67,322	68,606	132,353	131,024
Provision for loan losses	(784)	535	1,333	3,585
Net interest income after provision for loan losses	68,106	68,071	131,020	127,439
Non-interest income:
Mortgage warehouse transactional fees	1,967	2,523	3,854	4,743
Bank-owned life insurance	1,869	2,258	3,900	3,624
Gain on sale of SBA and other loans	947	573	2,308	1,901
Mortgage banking income	205	291	325	446
Gain on sale of investment securities	0	3,183	0	3,183
Impairment loss on investment securities	0	(2,882)	0	(4,585)
Other	3,125	1,664	6,883	4,414
Total non-interest income	16,127	18,391	37,037	41,144
Non-interest expense:
Salaries and employee benefits	27,748	23,651	52,673	44,763
Technology, communication and bank operations	11,322	8,910	21,266	18,827
Professional services	3,811	6,227	9,820	13,739
Occupancy	3,141	2,657	5,975	5,371
FDIC assessments, non-income taxes, and regulatory fees	2,135	2,416	4,335	4,141
Provision for operating losses	1,233	1,746	2,759	3,392
Merger and acquisition related expenses	869	0	975	0
Loan workout	648	408	1,307	929
Advertising and promotion	319	378	709	704
Other real estate owned expenses	58	160	98	105
Other	2,466	3,860	6,114	7,807
Total non-interest expense	53,750	50,413	106,031	99,778
Income before income tax expense	30,483	36,049	62,026	68,805
Income tax expense	6,820	12,327	14,222	19,336
Net income (loss)	23,663	23,722	47,804	49,469
Preferred stock dividends	3,615	3,615	7,229	7,229
Net income (loss) available to common shareholders	$ 20,048	$ 20,107	$ 40,575	$ 42,240
Basic earnings per common share (usd per share)	$ 0.64	$ 0.66	$ 1.29	$ 1.38
Diluted earnings per common share (usd per share)	$ 0.62	$ 0.62	$ 1.26	$ 1.29
Interchange and card revenue
Non-interest income:
Non-interest income	$ 6,382	$ 8,648	$ 16,043	$ 22,158
Deposit Fees
Non-interest income:
Non-interest income	$ 1,632	$ 2,133	$ 3,724	$ 5,260