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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Sep. 30, 2012 | Jun. 30, 2012 | Dec. 31, 2011 | Oct. 07, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Jan. 01, 2011
--- | --- | --- | --- | --- | --- | --- | ---
Allowance for credit losses | 2,240 |  | 2,548 |  |  |  |
Amounts pledged | 725,412 |  | 653,651 |  |  |  |
Class A Stock [Member] |  |  |  |  |  |  |
Common stock issued | 13,515,012 |  | 13,572,265 | 13,572,265 |  |  |
Common stock, shares outstanding | 13,515,012 | 13,489,162 | 13,572,265 |  | 13,570,945 | 13,568,945 | 13,268,522
Class B Stock [Member] |  |  |  |  |  |  |
Common stock issued | 99,680 |  | 99,680 |  |  |  |
Common stock, shares outstanding | 99,680 |  | 99,680 |  |  |  |

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