Employee Benefits and Retirement Plans - Pension Asset Allocation and Fair Value Measurement (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity	$ 3,955,631	$ 3,236,166
Equity, percentage	38.00%	28.00%
Fixed income	$ 2,670,663	$ 4,268,825
Fixed income, percentage	25.00%	37.00%
Total	$ 6,626,294	$ 7,504,991
Total, percentage	63.00%	65.00%
Certificates of deposit	$ 3,514,182	$ 3,257,418
Certificates of deposits, percentage	33.00%	29.00%
Cash and cash equivalent	$ 433,669	$ 657,861
Cash and cash equivalents, percentage	4.00%	6.00%
Total	$ 3,947,851	$ 3,915,279
Total, percentage	37.00%	35.00%
Fair value of plan assets	$ 10,574,145	$ 11,420,270	$ 11,889,678	$ 11,819,296
Fair value of plan assets, percentage	100.00%	100.00%
Level 1 [Member]
Equity	$ 3,955,631	$ 3,236,166
Fixed income	2,670,663	4,268,825
Total	6,626,294	7,504,991
Certificates of deposit	3,514,182	3,257,418
Cash and cash equivalent	433,669	657,861
Total	3,947,851	3,915,279
Fair value of plan assets	$ 10,574,145	$ 11,420,270

Estimated Fair Value Of Investment Of Assets

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Fair value of certificate deposits.

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Fixed Income Fair Value Disclosure

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Percentage Of Assets Estimated Fair Value In Investment

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Percentage Of Cash And Cash Equivalents Estimated Fair Value Portion

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Percentage Of Certificates Of Deposits Estimated Fair Value Portion

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- Definition

Percentage Of Defined Benefit Plan Fair Value Of Plan Assets

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Percentage Of Equity Portion In Investment Fair Value

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Percentage Of Fixed Income Portion In Investment Fair Value

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 30
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- Definition

Fair value portion of investments accounted under the equity method.

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-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
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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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