Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Assets
Cash and due from banks	$ 143,342		$ 168,106
Interest-earning deposits with banks	34,912		48,219
Securities
Securities available for sale	348,554		356,862
Securities held to maturity (fair value $379,699 and $346,455)	375,453		350,652
Total securities	724,007		707,514
Loans held for sale (at fair value)	6,888		8,882
Loans
Commercial and industrial	860,839		784,202
Commercial real estate	2,347,323		2,249,260
Commercial construction	265,994		223,859
Small business	85,247		77,240
Residential real estate	530,259		541,443
Loans and Leases Receivable Consumer Home Equity in First Position	513,518		497,075
Loans and Leases Receivable Consumer Home Equity in Subordinate Position	350,345		325,066
Other consumer	17,208		20,162
Total loans	4,970,733	[1]	4,718,307	[1]
Less: allowance for loan losses	(55,100)		(53,239)
Net loans	4,915,633		4,665,068
Federal Home Loan Bank stock	33,233		39,926
Bank premises and equipment, net	64,074		64,950
Goodwill	170,421		170,421
Identifiable intangible assets	9,885		12,221
Cash surrender value of life insurance policies	109,854		100,406
Other real estate owned and other foreclosed assets	7,743		7,633
Other assets	144,920		105,888
Total assets	6,364,912		6,099,234
Deposits
Demand deposits	1,462,200		1,369,432
Savings and interest checking accounts	2,108,486		1,940,153
Money market	990,160		933,205
Time certificates of deposit of $100,000 and over	254,718		297,984
Other time certificates of deposits	394,902		445,644
Total deposits	5,210,466		4,986,418
Borrowings
Advances from Federal Home Loan Banks	70,080		140,294
Customer Repurchase Agreements and other short-term borrowings	147,890		154,288
Wholesale repurchase agreements	50,000		50,000
Junior subordinated debentures	73,685		73,906
Subordinated debentures	65,000		30,000
Total borrowings	406,655		448,488
Other liabilities	107,264		72,788
Total liabilities	5,724,385		5,507,694
Commitments and contingencies
Stockholders' Equity
Preferred stock, $.01 par value. authorized: 1,000,000 shares, outstanding: none	0		0
Common stock, $.01 par value. authorized: 75,000,000 issued and outstanding : 23,998,738 shares in 2014 and 23,805,984 shares in 2013 (includes 254,500 and 268,290 shares of unvested participating restricted stock awards, respectively)	237		235
Shares held in rabbi trust at cost: 176,849 shares in 2014 and 178,765 shares in 2013	(3,666)		(3,404)
Deferred compensation obligation	3,666		3,404
Additional paid in capital	311,978		305,179
Retained earnings	330,444		293,560
Accumulated other comprehensive loss, net of tax	(2,132)		(7,434)
Total stockholders' equity	640,527		591,540
Total liabilities and stockholders' equity	$ 6,364,912		$ 6,099,234

[1] The amount of net deferred fees included in the ending balance was $2.8 million, $2.3 million, and $3.1 million at December 31, 2014, 2013, and 2012, respectively.