Shareholders' Equity Total compensation cost related to nonvested awards (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 Y
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation cost	$ 143,000
Excepted weighted-average period in years of compensation cost to be recognized	0.19
Warrants [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation cost	20,500
Excepted weighted-average period in years of compensation cost to be recognized	0.44
Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation cost	$ 1,620,100
Excepted weighted-average period in years of compensation cost to be recognized	1.68