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EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Earnings Per Share by Two Class Method [Line Items] |  |  |  |
Undistributed earning allocation rate of Class B common stock in excess of Class A common stock (in hundredths) | 5.00% | 5.00% | 5.00% | 5.00%
Numerator [Abstract] |  |  |  |
Net earnings | $ 7,836 | $ 2,491 | $ 9,689 | $ 4,804
Undistributed earnings | 7,055 | 1,680 | 7,373 | 2,376
Undistributed earnings allocation - basic and diluted [Abstract] |  |  |  |
Total undistributed earnings | 7,055 | 1,680 | 7,373 | 2,376
Net earnings allocation - basic and diluted [Abstract] |  |  |  |
Net earnings | 7,836 | 2,491 | 9,689 | 4,804
Class A [Member] |  |  |  |
Numerator [Abstract] |  |  |  |
Net earnings | 1,424 | 426 | 1,744 | 811
Less Dividends | 131 | 130 | 391 | 392
Undistributed earnings allocation - basic and diluted [Abstract] |  |  |  |
Total undistributed earnings | 1,293 | 296 | 1,353 | 419
Net earnings allocation - basic and diluted [Abstract] |  |  |  |
Net earnings | 1,424 | 426 | 1,744 | 811
Weighted-average shares outstanding [Abstract] |  |  |  |
Common share - basic and diluted (in shares) | 2,174,912 | 2,174,912 | 2,174,912 | 2,174,912
Earnings per share: |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 0.65 | $ 0.20 | $ 0.80 | $ 0.37
Class B [Member] |  |  |  |
Earnings Per Share by Two Class Method [Line Items] |  |  |  |
Dividend rate Class B common stock in excess of dividend rate of Class A common stock (in hundredths) | 5.00% | 5.00% | 5.00% | 5.00%
Numerator [Abstract] |  |  |  |
Net earnings | 6,412 | 2,065 | 7,945 | 3,993
Less Dividends | 650 | 681 | 1,925 | 2,036
Undistributed earnings allocation - basic and diluted [Abstract] |  |  |  |
Total undistributed earnings | 5,762 | 1,384 | 6,020 | 1,957
Net earnings allocation - basic and diluted [Abstract] |  |  |  |
Net earnings | $ 6,412 | $ 2,065 | $ 7,945 | $ 3,993
Weighted-average shares outstanding [Abstract] |  |  |  |
Common share - basic and diluted (in shares) | 9,228,731 | 9,697,097 | 9,221,032 | 9,668,785
Earnings per share: |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 0.69 | $ 0.21 | $ 0.86 | $ 0.41

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