Net Income Per Common Share (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net Income Per Common Share
Weighted average common basic shares outstanding	21,870,771	15,563,914
Effect of dilutive stock options and restricted stock units (in shares)	300,033	256,204
Weighted average common diluted shares outstanding	22,170,804	15,820,118
Net income per share:
Basic (in dollars per share)	$ 0.00	$ 0.14
Diluted (in dollars per share)	$ 0.00	$ 0.14
Additional securities not included in the computation of diluted net income per share	0	0