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Borrowings (Details) (USD $)	Dec. 31, 2012
Maturity of borrowings
2013
2014	10,000,000
2015	30,000,000
2016
2017	7,000,000
Thereafter	18,248,000
Total borrowings	65,248,000
Fixed Interest Rate [Member]
Maturity of borrowings
2013
2014	10,000,000
2015	30,000,000
2016
2017	7,000,000
Thereafter	10,000,000
Total borrowings	57,000,000
Floating Interest Rate [Member]
Maturity of borrowings
2013
2014
2015
2016
2017
Thereafter	8,248,000
Total borrowings	$ 8,248,000

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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-Publisher FASB

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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