Employee Benefits and Retirement Plans - Pension Asset Allocation and Fair Value Measurement (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Equity	$ 1,728,374	$ 2,452,986
Equity, percentage	15.00%	24.00%
Fixed income	1,108,150
Fixed income, percentage	10.00%
Total	2,836,524	2,452,986
Total, percentage	25.00%	24.00%
Certificates of deposit	6,831,303	5,858,190
Certificates of deposits, percentage	61.00%	57.00%
Cash and cash equivalent	1,581,765	1,951,605
Cash and cash equivalents, percentage	14.00%	19.00%
Total	8,413,068	7,809,795
Total, percentage	75.00%	76.00%
Fair value of plan assets	11,249,592	10,262,781	10,488,437	10,334,869
Fair value of plan assets, percentage	100.00%	100.00%
Level 1 [Member]
Equity	1,728,374	2,452,986
Fixed income	1,108,150
Total	2,836,524	2,452,986
Certificates of deposit	6,831,303	5,858,190
Cash and cash equivalent	1,581,765	1,951,605
Total	8,413,068	7,809,795
Fair value of plan assets		$ 10,262,781

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Fair Value Of Certificate Deposits

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Percentage Of Defined Benefit Plan Fair Value Of Plan Assets

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

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