FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value By Balance Sheet Location) (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Assets:
Securities - trading	$ 71,232,000	$ 80,727,000
Securities - available-for-sale	472,920,000	465,795,000
Securities - held-to-maturity	92,458,000	80,107,000
Liabilities:
FHLB advances at fair value	10,304,000	10,533,000
Carrying Value
Assets:
Cash and due from banks	181,298,000	132,436,000
Securities - trading	71,232,000	80,727,000
Securities - available-for-sale	472,920,000	465,795,000
Securities - held-to-maturity	86,452,000	75,438,000
Loans receivable held for sale	11,920,000	3,007,000
Loans receivable	3,223,794,000	3,293,331,000
FHLB stock	36,705,000	37,371,000
Bank-owned life insurance	59,891,000	58,563,000
MSRs	6,244,000	5,584,000
Derivatives	8,863,000	6,284,000
Liabilities:
Demand NOW, and money market accounts	1,800,555,000	1,555,561,000
Regualr savings	727,956,000	669,596,000
Certificates of deposit	1,029,293,000	1,250,497,000
FHLB advances at fair value	10,304,000	10,533,000
Junior subordinated debentures at fair value	73,063,000	49,988,000
Other borrowings	76,633,000	152,128,000
Derivatives	8,548,000	6,283,000
Carrying Value | Commitments to originate loans [Member]
Liabilities:
Off-balance-sheet financial instruments	510,000	617,000
Carrying Value | Commitments to sell loans [Member]
Liabilities:
Off-balance-sheet financial instruments	195,000	617,000
Estimated Fair Value
Assets:
Cash and due from banks	181,298,000	132,436,000
Securities - trading	71,232,000	80,727,000
Securities - available-for-sale	472,920,000	465,795,000
Securities - held-to-maturity	92,458,000	80,107,000
Loans receivable held for sale	12,059,000	3,069,000
Loans receivable	3,143,853,000	3,224,112,000
FHLB stock	36,705,000	37,371,000
Bank-owned life insurance	59,891,000	58,563,000
MSRs	6,244,000	5,584,000
Derivatives	8,863,000	6,284,000
Liabilities:
Demand NOW, and money market accounts	1,729,351,000	1,487,080,000
Regualr savings	694,609,000	630,450,000
Certificates of deposit	1,033,931,000	1,258,431,000
FHLB advances at fair value	10,304,000	10,533,000
Junior subordinated debentures at fair value	73,063,000	49,988,000
Other borrowings	76,633,000	152,128,000
Derivatives	8,548,000	6,283,000
Estimated Fair Value | Commitments to originate loans [Member]
Liabilities:
Off-balance-sheet financial instruments	510,000	617,000
Estimated Fair Value | Commitments to sell loans [Member]
Liabilities:
Off-balance-sheet financial instruments	$ 195,000	$ 617,000