CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Acquisition-related costs	$ 1,005	$ 0		$ 1,005	$ 0
INTEREST INCOME:
Loans receivable	104,868		$ 95,221	298,743	281,304
Mortgage-backed securities	8,915		6,644	25,145	17,529
Securities and cash equivalents	3,865		3,413	11,003	9,976
Total interest income	117,648		105,278	334,891	308,809
INTEREST EXPENSE:
Deposits	5,517		3,189	13,139	9,162
FHLB advances	1,388		569	3,564	1,142
Other borrowings	60		84	179	241
Junior subordinated debentures	1,605		1,226	4,495	3,494
Total interest expense	8,570		5,068	21,377	14,039
Net interest income	109,078		100,210	313,514	294,770
PROVISION FOR LOAN LOSSES	2,000		2,000	6,000	6,000
Net interest income after provision for loan losses	107,078		98,210	307,514	288,770
NON-INTEREST INCOME:
Deposit fees and other service charges	12,255		11,058	35,535	32,611
Bank-owned life insurance (BOLI)	1,726		1,043	3,511	3,599
Miscellaneous	569		1,705	4,995	7,062
Other operating income	20,366		18,304	59,365	59,126
Net gain on sale of securities	0		270	48	230
Net change in valuation of financial instruments carried at fair value	45		(493)	3,577	(1,831)
Total non-interest income	20,411		18,081	62,990	57,525
NON-INTEREST EXPENSE:
Salary and employee benefits	48,930		48,931	150,491	144,014
Less capitalized loan origination costs	(4,318)		(4,331)	(13,062)	(13,245)
Occupancy and equipment	12,385		11,737	35,725	35,778
Information/computer data services	4,766		4,420	13,711	12,513
Payment and card processing expenses	3,748		3,581	11,179	10,523
Professional services	3,010		3,349	11,276	12,233
Advertising and marketing	1,786		2,130	5,758	5,225
Deposit insurance	991		1,101	3,353	3,438
State/municipal business and use taxes	902		780	2,430	1,857
REO operations	433		240	553	(1,089)
Amortization of core deposit intangibles	1,348		1,542	4,112	4,790
Miscellaneous	6,646		6,851	19,444	20,432
Total non-interest expense	81,632		80,331	245,975	236,469
Noninterest Operating Expense, Before Acquisition Related Costs	80,627	$ 80,331		244,970	236,469
Income before provision for income taxes	45,857		35,960	124,529	109,826
PROVISION FOR INCOME TAXES	8,084		10,883	25,542	35,502
NET INCOME	$ 37,773		$ 25,077	$ 98,987	$ 74,324
Earnings per common share:
Basic	$ 1.17		$ 0.76	$ 3.06	$ 2.25
Diluted	1.17		0.76	3.05	2.25
Cumulative dividends declared per common share	$ 0.38		$ 0.25	$ 1.58	$ 1.75
Weighted average number of common shares outstanding, Basic	32,256,789		32,982,532	32,300,688	32,966,214
Weighted average number of common shares outstanding, Diluted	32,376,623		33,079,099	32,406,414	33,061,172
Mortgage Banking [Member]
NON-INTEREST INCOME:
Mortgage banking operations	$ 5,816		$ 4,498	$ 15,324	$ 15,854