Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest and Dividend Income
Loans receivable, including loan fees	$ 178,277	$ 151,290
Investment securities	7,290	6,458
Federal Home Loan Bank stock	304	396
Deposits with banks	1,890	1,556
Total interest and dividend income	187,761	159,700
Interest Expense
Time deposits	34,123	15,728
Other deposits	5,377	4,586
Securities sold under agreements to repurchase		714
Advances from Federal Home Loan Bank	2,590	971
Long-term debt	2,132	2,082
Deferred payments from acquisition	217	276
Short-term borrowings	6
Total interest expense	44,445	24,357
Net interest income before reversal for credit losses	143,316	135,343
Reversal for credit losses		(3,000)
Net interest income after reversal for credit losses	143,316	138,343
Non-Interest Income
Net gains/(losses) from equity securities	4,163	(3,847)
Letters of credit commissions	1,554	1,275
Depository service fees	7,111	6,867
Gain from acquisition		340
Other operating income	5,949	6,097
Total non-interest income	12,921	5,310
Non-Interest Expense
Salaries and employee benefits	32,132	30,377
Occupancy expense	5,549	5,452
Computer and equipment expense	2,879	3,094
Professional services expense	5,257	6,039
Data processing service expense	3,410	3,219
FDIC and regulatory assessments	2,476	2,035
Marketing expense	2,141	858
Other real estate owned expense/(income)	280	(212)
Amortization of investments in low income housing and alternative energy partnerships	10,810	5,761
Amortization of core deposit intangibles	172	234
Acquisition and integration costs		169
Other operating expense	5,864	3,945
Total non-interest expense	70,970	60,971
Income before income tax expense	85,267	82,682
Income tax expense	18,588	18,866
Net income	66,679	63,816
Other Comprehensive Income, net of tax
Unrealized holding gains/(losses) on securities available-for-sale	8,799	(11,514)
Unrealized holding (losses)/gains on cash flow hedge derivatives	(1,224)	2,193
Total other comprehensive gain/(loss), net of tax	7,575	(9,321)
Total other comprehensive income	$ 74,254	$ 54,495
Net Income Per Common Share:
Basic (in dollars per share)	$ 0.83	$ 0.79
Diluted (in dollars per share)	0.83	0.78
Cash dividends (in dollars per share)	$ 0.31	$ 0.24
Average Common Shares Outstanding:
Basic (in shares)	80,455,317	81,123,380
Diluted (in shares)	80,703,134	81,680,445
Deposit Account [Member]
Non-Interest Income
Depository service fees	$ 1,255	$ 1,445