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Subordinated Debt (Details Textual) - USD ($)			6 Months Ended
	Jun. 28, 2013	Jun. 28, 2013	Jun. 30, 2016	Oct. 20, 2015
Debt Instrument [Line Items]
Warrants issued to purchase common stock (in shares)		48,750
Common stock exercise price (in dollars per share)		$ 19.33
Volume-weighted average share price, period (in days)		20 days
Weighted average share price (in dollars per share)		$ 30.00
Warrant exercise price description			The warrant will become exercisable on June 28, 2014, and, unless previously exercised, will expire on June 28, 2021. The Company has the right to force an exercise of the warrant after the debenture has been repaid in full if the 20-day volume-weighted average price of a share of its common stock exceeds $30.00.
Fair value of warrants	$ 300,000	$ 300,000
Risk free interest rate (as a percent)		0.66%
Expected dividend rate (as a percent)		1.19%
Expected volatility rate (as a percent)		34.00%
Expected term (in years)		3 years
Subordinated Debt | 8.00% subordinated debenture, due 2021
Debt Instrument [Line Items]
Subordinated debenture, principal amount	$ 3,000,000	$ 3,000,000
Fixed annual interest rate (as a percent)	8.00%	8.00%
Subordinated debenture, maturity date	Jun. 28, 2021
Subordinated debenture, maturity date range, start		Jun. 28, 2016
Subordinated Debt | 6.4375% subordinated notes, due 2025
Debt Instrument [Line Items]
Subordinated debenture, principal amount				$ 10,000,000.0
Fixed annual interest rate (as a percent)				6.4375%

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Contractual interest rate for funds borrowed, under the debt agreement.

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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

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