Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Shares [Abstract]
Basic (in shares)	7,832,162	6,154,396	7,827,195	6,149,029
Effect of dilutive securities - stock options (in shares)	16,980	6,869	12,169	8,003
Diluted (in shares)	7,849,142	6,161,265	7,839,364	6,157,032
Per Share Amount [Abstract]
Basic (in dollars per share)	$ 0.55	$ 0.16	$ 1.08	$ 0.45
Incremental per share amount attributable to share based payment arrangements (in dollars per share)	$ (0.01)	$ 0	$ 0	$ 0
Diluted (in dollars per share)	$ 0.54	$ 0.16	$ 1.08	$ 0.45
Stock options on common stock not included in computing diluted earnings per share (in shares)			196,394	82,177