Earnings (Loss) Per Share (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Shares [Abstract]
Earning (loss) per share, basic (in shares)	7,031,971	6,974,781	6,933,144
Effect of dilutive securities [Abstract]
Stock options (in shares)	8,962	2,121	0
Warrant	2,186	0	0
Earnings (loss) per share, diluted (in shares)	7,043,119	6,976,902	6,933,144
Per Share Amount [Abstract]
Earnings (loss) per share, basic (in dollars per share)	$ 0.92	$ 0.71	$ (0.39)
Earnings (loss) per share, diluted (in dollars per share)	$ 0.92	$ 0.71	$ (0.39)
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	104,101
Options exercise price (in dollars per shares)	$ 17.32	$ 20.40	$ 20.18	$ 19.34
Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)	$ 22.00
Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)	$ 39.40
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)	22,000	100,000	100,000
Performance Based Restricted Stock [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)	10,511
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options exercise price (in dollars per shares)		$ 15.85	$ 15.85