CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Assets:
Cash and due from banks		$ 117,608	$ 106,185
Short-term investments		2,324	1,612
Mortgage loans held for sale, at fair value		32,784	29,434
Securities:
Available for sale, at fair value		749,486	739,912
Held to maturity, at amortized cost		13,942	15,633
Total securities		763,428	755,545
Federal Home Loan Bank stock, at cost		44,640	43,129
Loans:
Total loans	[1]	3,200,100	3,234,371
Less allowance for loan losses		26,662	26,004
Net loans		3,173,438	3,208,367
Premises and equipment, net		28,508	29,020
Investment in bank-owned life insurance		72,183	71,105
Goodwill		63,909	64,059
Identifiable intangible assets, net		9,642	10,175
Other assets		67,065	62,484
Total assets		4,375,529	4,381,115
Liabilities:
Demand deposits		587,813	585,960
NOW accounts		448,617	427,707
Money market accounts		666,047	730,075
Savings accounts		364,002	358,397
Time deposits		954,710	961,613
Total deposits		3,021,189	3,063,752
Federal Home Loan Bank advances		869,733	848,930
Junior subordinated debentures		22,681	22,681
Other liabilities		55,884	54,948
Total liabilities		3,969,487	3,990,311
Commitments and contingencies
Shareholders' Equity:
Common stock		1,076	1,073
Paid-in capital		116,484	115,123
Retained earnings		306,151	294,365
Accumulated other comprehensive loss		(17,669)	(19,757)
Total shareholders' equity		406,042	390,804
Total liabilities and shareholders’ equity		4,375,529	4,381,115
Commercial [Member]
Loans:
Total loans		1,698,389	1,771,666
Residential Real Estate [Member]
Loans:
Total loans		1,168,105	1,122,748
Consumer [Member]
Loans:
Total loans		$ 333,606	$ 339,957

[1] Includes net unamortized loan origination costs of $3.7 million and $3.0 million, respectively, at June 30, 2017 and December 31, 2016 and net unamortized premiums on purchased loans of $854 thousand and $783 thousand, respectively, at June 30, 2017 and December 31, 2016.