Stock Options and Restricted Stock - Share-based Compensation Expense (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation cost	$ 993,423
Period to recognize share-based compensation expense not yet recognized	2 years 1 month 13 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to options and restricted shares	31,621	76,903
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to options and restricted shares	$ 388,187	$ 133,071