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Consolidated balance sheets [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Interest-bearing deposits in banks, pledged deposits | $ 14,519 | $ 23,994
Trading assets, pledged securities to creditors | 1,262 | 18,988
Securities available-for-sale, pledged securities to creditors | 152,340 | 375,492
Securities held-to-maturity, fair value | 34,149 | 26,637
Securities held-to-maturity, pledged securities to creditors | 19,453 | 17,486
Premises and equipment, accumulated depreciation and amortization | $ 11,688 | $ 17,881
Class A common stock [Member] |  |
Common stock, no par value | $ 0 | $ 0
Common stock, assigned value | $ 6.67 | $ 6.67
Common stock, Authorized | 40,000,000 | 40,000,000
Common stock, outstanding | 6,342,189 | 6,342,189
Common Class B [Member] |  |
Common stock, no par value | $ 0 | $ 0
Common stock, assigned value | $ 6.67 | $ 6.67
Common stock, Authorized | 40,000,000 | 40,000,000
Common stock, outstanding | 2,531,926 | 2,531,926
Common Class E [Member] |  |
Common stock, no par value | $ 0 | $ 0
Common stock, assigned value | $ 6.67 | $ 6.67
Common stock, Authorized | 100,000,000 | 100,000,000
Common stock, outstanding | 29,271,067 | 28,257,827

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