Earnings Per Share (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Shares [Abstract]
Earning (loss) per share, basic (in shares)	7,074,410	7,031,971	6,974,781
Effect of dilutive securities [Abstract]
Stock options (in shares)	14,887	8,962	2,121
Warrant	17,849	2,186	0
Earnings per share, diluted (in shares)	7,107,146	7,043,119	6,976,902
Per Share Amount [Abstract]
Earnings per share, basic (in dollars per share)	$ 0.87	$ 0.92	$ 0.71
Earnings per share, diluted (in dollars per share)	$ 0.87	$ 0.92	$ 0.71
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)	$ 15.30	$ 17.32	$ 20.40	$ 20.18
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)	11,900	37,700	163,900
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
Warrants [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)			104,101
Options exercise price (in dollars per shares)			$ 15.85