Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest and Dividend Income
Loans receivable, including loan fees	$ 114,890	$ 100,100
Investment securities	6,859	3,774
Federal Home Loan Bank stock	347	581
Deposits with banks	249	479
Total interest and dividend income	122,345	104,934
Interest Expense
Time deposits	10,857	6,773
Other deposits	3,640	4,793
Securities sold under agreements to repurchase	3,934	3,925
Advances from Federal Home Loan Bank	106	93
Long-term debt	1,440	1,424
Total interest expense	19,977	17,008
Net interest income before reversal for credit losses	102,368	87,926
Reversal for loan losses	(10,500)	(5,000)
Net interest income after reversal for credit losses	112,868	92,926
Non-Interest Income
Securities losses, net	(206)	(21)
Letters of credit commissions	1,281	1,268
Depository service fees	1,323	1,301
Other operating income	5,143	6,001
Total non-interest income	7,541	8,549
Non-Interest Expense
Salaries and employee benefits	26,931	22,616
Occupancy expense	4,369	4,021
Computer and equipment expense	2,580	2,502
Professional services expense	4,368	3,370
Data processing service expense	2,250	1,982
FDIC and State assessments	2,589	2,260
Marketing expense	796	820
Other real estate owned expense	295	483
Amortization of investments in low income housing and alternative energy partnerships	2,794	2,383
Amortization of core deposit intangibles	172	177
Other operating expense	4,427	3,517
Total non-interest expense	51,571	44,131
Income before income tax expense	68,838	57,344
Income tax expense	22,675	21,364
Net income	46,163	35,980
Other comprehensive income, net of tax
Unrealized holding gain on securities available-for-sale	10,354	6,499
Less: reclassification adjustments included in net income	(119)	(12)
Unrealized holding loss on cash flow hedge derivatives	(3,120)	(1,588)
Total other comprehensive gain, net of tax	7,353	4,923
Total comprehensive income	$ 53,516	$ 40,903
Net income per common share:
Basic (in Dollars per share)	$ 0.58	$ 0.45
Diluted (in Dollars per share)	0.57	0.45
Cash dividends paid per common share (in Dollars per share)	$ 0.18	$ 0.10
Average common shares outstanding
Basic (in Shares)	79,734,519	79,835,628
Diluted (in Shares)	80,393,849	80,309,383