Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest and Dividend Income
Loans receivable, including loan fees	$ 146,383	$ 118,500	$ 401,129	$ 349,212
Investment securities	5,692	4,850	14,817	16,974
Federal Home Loan Bank and FRB stock	607	393	1,317	1,122
Term federal funds sold	108		108
Deposits with banks	1,288	412	3,140	1,094
Total interest and dividend income	154,078	124,155	420,511	368,402
Interest Expense
Time deposits	11,678	10,701	33,429	32,177
Other deposits	5,101	4,212	14,245	11,783
Securities sold under agreements to repurchase	874	3,828	3,489	11,696
Advances from Federal Home Loan Bank	872	134	1,465	442
Long-term debt	1,456	1,456	4,320	4,336
Deferred payments from acquisition	901		901
Total interest expense	20,882	20,331	57,849	60,434
Net interest income before reversal for credit losses	133,196	103,824	362,662	307,968
Reversal for loan losses			(2,500)	(15,650)
Net interest income after reversal for credit losses	133,196	103,824	365,162	323,618
Non-Interest Income
Securities gains/(losses), net	24	1,692	(439)	3,141
Letters of credit commissions	1,302	1,212	3,618	3,698
Depository service fees	1,407	1,401	4,259	4,109
Gain from acquisition	5,440		5,440
Other operating income	4,788	4,506	12,953	14,461
Total non-interest income	12,961	8,811	25,831	25,409
Non-Interest Expense
Salaries and employee benefits	27,913	22,881	79,929	71,313
Occupancy expense	5,312	4,734	14,733	13,587
Computer and equipment expense	2,643	2,337	7,895	7,360
Professional services expense	4,942	4,999	14,541	13,981
Data processing service expense	2,918	2,279	7,846	6,556
FDIC and regulatory assessments	2,552	2,288	7,261	7,640
Marketing expense	2,103	1,516	4,833	3,314
Other real estate owned expense/(income)	369	(176)	747	612
Amortization of investments in low income housing and alternative energy partnerships	5,723	5,432	16,797	35,626
Amortization of core deposit intangibles	281	172	626	517
Acquisition and integration costs	3,277		3,277
Other operating expense	3,215	4,275	11,307	10,681
Total non-interest expense	61,248	50,737	169,792	171,187
Income before income tax expense	84,909	61,898	221,201	177,840
Income tax expense	35,163	15,808	71,099	50,756
Net income	49,746	46,090	150,102	127,084
Other comprehensive income, net of tax
Unrealized holding gain on securities available-for-sale	1,060	938	3,338	15,748
Less: reclassification adjustments for gains/(losses) included in net income	14	981	(254)	1,821
Unrealized holding gain/(loss) on cash flow hedge derivatives	157	804	(94)	(3,598)
Total other comprehensive gain, net of tax	1,203	761	3,498	10,329
Total other comprehensive income	$ 50,949	$ 46,851	$ 153,600	$ 137,413
Net income per common share:
Basic (in dollars per share)	$ 0.62	$ 0.58	$ 1.87	$ 1.61
Diluted (in dollars per share)	0.61	0.58	1.86	1.59
Cash dividends paid per common share (in dollars per share)	$ 0.21	$ 0.18	$ 0.63	$ 0.54
Weighted-average shares:
Basic (in shares)	80,665,398	78,865,860	80,073,249	79,147,839
Diluted weighted-average number of common shares outstanding (in shares)	81,404,854	79,697,069	80,797,179	79,902,846