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Consolidated Statements of Changes in Stockholders' Equity (USD $)
In Thousands
Series B Preferred Stock [Member]
Retained Earnings [Member]
Series B Preferred Stock [Member]
Preferred Stock [Member]
Common Stock [Member]
Additional Paid In Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Balance at Dec. 31, 2011     $ 11,250 $ 110,056 $ 4,715 $ 32,695 $ (17,354) $ (5,446) $ 135,916
Net income           4,231     4,231
Other comprehensive income               2,560 2,560
Dividend on series B preferred stock (141) (141)              
Cash dividends declared on common stock           (490)     (490)
Issuance cost of common stock           (2)     (2)
Stock-based compensation expense         7       7
Balance at Mar. 31, 2012     11,250 110,056 4,722 36,293 (17,354) (2,886) 142,081
Balance at Dec. 31, 2012     11,250 110,056 4,801 46,753 (17,232) 5,063 160,691
Net income           4,924     4,924
Other comprehensive income               104 104
Dividend on series B preferred stock (85) (85)              
Cash dividends declared on common stock           (899)     (899)
Issuance cost of common stock           (3)     (3)
Exercise of stock options         8   2   10
Stock-based compensation expense         11       11
Balance at Mar. 31, 2013     $ 11,250 $ 110,056 $ 4,820 $ 50,690 $ (17,230) $ 5,167 $ 164,753