Equity (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Aug. 24, 2012	Dec. 31, 2011
Warrants [Abstract]
Warrants outstanding (in shares)	556,613	556,613
Weighted average exercise price (in dollars per share)	$ 10.00	$ 10.00
Weighted average remaining contractual life		1 year 6 months 26 days
Preferred Shares [Abstract]
Preferred shares, shares authorized (in shares)	1,000,000	1,000,000			1,000,000
Preferred shares, issued and outstanding (in shares)	0	0
Common Shares [Abstract]
Common shares, shares authorized (in shares)	75,000,000	75,000,000			75,000,000
Common shares, par value (in dollars per share)	$ 0	$ 0			$ 0
Common shares, shares issued (in shares)	50,868,932	50,868,932			50,321,962
Common shares, shares outstanding (in shares)	49,162,758	49,162,758			49,035,788
Treasury stock at cost (in shares)	1,706,174	1,706,174			1,286,174
Options exercised (in shares)	78,541	98,541
Options exercises in period, weighted average exercise price (in dollars per share)	$ 3.46	$ 2.91
Stock-based compensation expense		$ 1,441,135	$ 1,255,911
Stock options granted (in shares)		280,000	301,593
Stock options forfeited (in shares)		98,229	11,876
Aggregate offering price				$ 25,000,000