Note 22 - Parent Company Only Financial Information (Details) - Condensed Statements of Financial Condition for the Holding Company: (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets:
Cash and due from banks	$ 33,485	$ 40,425
Other securities ($2,562 and $2,359 at fair value pursuant to the fair value option at December 31, 2013 and 2012, respectively)	261,634	229,453
Goodwill	16,127	16,127
Other assets	57,915	47,502
Total assets	4,721,501	4,451,416
Borrowings (at fair value pursuant to the fair value option at December 31, 2013 and 2012)	29,570	23,922
Other liabilities	44,067	45,453
Total liabilities	4,288,969	4,009,051
Stockholders' Equity:
Common stock	315	315
Treasury stock, at average cost (1,407,343 shares and 787,266 at December 31, 2013 and 2012, respectively)	22,053	10,257
Retained earnings	263,743	241,856
Accumulated other comprehensive income, net of taxes	(11,375)	12,137
Total equity	432,532	442,365	416,911
Total liabilities and equity	4,721,501	4,451,416
Holding Company [Member]
Assets:
Cash and due from banks	16,525	21,041
Other securities ($2,562 and $2,359 at fair value pursuant to the fair value option at December 31, 2013 and 2012, respectively)	2,849	3,165
Interest receivable	4	13
Investment in subsidiaries	449,580	451,190
Goodwill	2,185	2,185
Other assets	4,354	4,418
Total assets	475,497	482,012
Borrowings (at fair value pursuant to the fair value option at December 31, 2013 and 2012)	29,570	23,923
Other liabilities	13,395	15,724
Total liabilities	42,965	39,647
Stockholders' Equity:
Common stock	315	315
Additional paid-in capital	201,902	198,314
Treasury stock, at average cost (1,407,343 shares and 787,266 at December 31, 2013 and 2012, respectively)	(22,053)	(10,257)
Retained earnings	263,743	241,856
Accumulated other comprehensive income, net of taxes	(11,375)	12,137
Total equity	432,532	442,365
Total liabilities and equity	$ 475,497	$ 482,012