Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest and Dividend Income
Loans receivable, including loan fees	$ 129,836	$ 115,822	$ 254,746	$ 230,712
Investment securities	4,719	5,265	9,125	12,124
Federal Home Loan Bank stock	298	382	710	729
Deposits with banks	776	433	1,852	682
Total interest and dividend income	135,629	121,902	266,433	244,247
Interest Expense
Time deposits	10,769	10,619	21,751	21,476
Other deposits	4,698	3,931	9,144	7,571
Securities sold under agreements to repurchase	1,065	3,934	2,615	7,868
Advances from Federal Home Loan Bank	305	202	593	308
Long-term debt	1,440	1,440	2,864	2,880
Total interest expense	18,277	20,126	36,967	40,103
Net interest income before reversal for credit losses	117,352	101,776	229,466	204,144
Reversal for loan losses		(5,150)	(2,500)	(15,650)
Net interest income after reversal for credit losses	117,352	106,926	231,966	219,794
Non-Interest Income
Securities gains/(losses), net	3	1,655	(463)	1,449
Letters of credit commissions	1,193	1,205	2,316	2,486
Depository service fees	1,344	1,385	2,852	2,708
Other operating income	3,612	4,812	8,165	9,955
Total non-interest income	6,152	9,057	12,870	16,598
Non-Interest Expense
Salaries and employee benefits	26,145	21,501	52,016	48,432
Occupancy expense	4,722	4,484	9,421	8,853
Computer and equipment expense	2,528	2,443	5,252	5,023
Professional services expense	5,343	4,614	9,599	8,982
Data processing service expense	2,396	2,027	4,928	4,277
FDIC and State assessments	2,189	2,763	4,709	5,352
Marketing expense	1,859	1,002	2,730	1,798
Other real estate owned expense	317	493	378	788
Amortization of investments in low income housing and alternative energy partnerships	6,224	27,400	11,074	30,194
Amortization of core deposit intangibles	173	173	345	345
Other operating expense	4,762	1,979	8,092	6,406
Total non-interest expense	56,658	68,879	108,544	120,450
Income before income tax expense	66,846	47,104	136,292	115,942
Income tax expense	15,431	12,273	35,936	34,948
Net income	51,415	34,831	100,356	80,994
Other comprehensive income, net of tax
Unrealized holding gain on securities available-for-sale	2,774	4,456	2,278	14,810
Less: reclassification adjustments for losses included in net income	2	959	(268)	840
Unrealized holding loss on cash flow hedge derivatives	(550)	(1,282)	(251)	(4,402)
Total other comprehensive gain, net of tax	2,222	2,215	2,295	9,568
Total other comprehensive income	$ 53,637	$ 37,046	$ 102,651	$ 90,562
Net income per common share:
Basic (in dollars per share)	$ 0.64	$ 0.44	$ 1.26	$ 1.02
Diluted (in dollars per share)	0.64	0.44	1.25	1.01
Cash dividends paid per common share (in dollars per share)	$ 0.21	$ 0.18	$ 0.42	$ 0.36
Weighted-average shares:
Basic (in shares)	79,840,188	78,846,237	79,772,268	79,290,378
Diluted weighted-average number of common shares outstanding (in shares)	80,562,607	79,619,883	80,488,306	80,006,866