Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 137,691	$ 362,971
Securities available for sale	438,246	645,948
Securities to be held to maturity (fair value of $46,416 in 2012 and $28,342 in 2011)	46,010	28,074
Mortgage loans held for sale	10,614	4,392
Loans, net of allowance for loan losses of $23,729 and $24,063 (2012 and 2011)	2,626,468	2,261,232
Federal Home Loan Bank stock, at cost	28,377	25,980
Premises and equipment, net	33,197	34,681
Goodwill	10,168	10,168
Other real estate owned	26,203	10,956
Other assets and accrued interest receivable	37,425	35,589
TOTAL ASSETS	3,394,399	3,419,991
Deposits
Non interest-bearing	479,046	408,483
Interest-bearing	1,503,882	1,325,495
Total deposits	1,982,928	1,733,978
Securities sold under agreements to repurchase and other short-term borrowings	250,884	230,231
Federal Home Loan Bank advances	542,600	934,630
Subordinated note	41,240	41,240
Other liabilities and accrued interest payable	40,045	27,545
Total liabilities	2,857,697	2,967,624
Commitments and contingent liabilities (Footnote 19)
STOCKHOLDERS' EQUITY
Preferred stock, no par value, 100,000 shares authorized Series A 8.5% non cumulative convertible, none issued
Class A Common Stock, no par value, 30,000,000 shares authorized, 18,694,315 shares (2012) and 18,651,519 shares (2011) issued and outstanding; Class B Common Stock, no par value, 5,000,000 shares authorized, 2,270,952 shares (2012) and 2,299,803 (2011) issued and outstanding	4,932	4,947
Additional paid in capital	132,686	131,482
Retained earnings	393,472	311,799
Accumulated other comprehensive income	5,612	4,139
Total stockholders' equity	536,702	452,367
Total liabilities and stockholders' equity	$ 3,394,399	$ 3,419,991