Earnings Per Share (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shares [Abstract]
Earning (loss) per share, basic (in shares)	7,106,171	7,074,410	7,031,971
Effect of dilutive securities [Abstract]
Stock options (in shares)	6,939	14,887	8,962
Warrant (in shares)	13,491	17,849	2,186
Earnings per share, diluted (in shares)	7,126,601	7,107,146	7,043,119
Per Share Amount [Abstract]
Earnings per share, basic (in dollars per share)	$ 1.07	$ 0.87	$ 0.92
Earnings per share, diluted (in dollars per share)	$ 1.06	$ 0.87	$ 0.92
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)	$ 14.00	$ 15.30	$ 17.32	$ 20.40
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities not included in the calculation of earning per share (in shares)	23,500	11,900	37,700
Options [Member] | Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)	$ 22.00	$ 22.00	$ 22.00
Options [Member] | Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)	$ 39.40	$ 39.40	$ 39.40