Related Party Transactions (Details) (USD $)	1 Months Ended	12 Months Ended
	Mar. 31, 2012 Steven Sprague	Dec. 31, 2012 Steven Sprague item	Dec. 31, 2012 Peter Sprague	Dec. 31, 2011 Peter Sprague	Dec. 31, 2010 Peter Sprague	Dec. 31, 2012 Michael Sprague	Dec. 31, 2011 Michael Sprague	Dec. 31, 2010 Michael Sprague
Related Party Transactions
Employment agreement, number of components of annual bonus		2
Fixed annual bonus (as a percent)		50.00%
Period from end of the fiscal year within which incentive bonus payable is determined by the Compensation Committee of the Board of Directors		60 days
Amount overpaid due to a payroll processing error	$ 70,000
Salary paid			134,200	134,160	129,000	189,300	189,280	182,000
Bonus earned			$ 30,000	$ 125,000	$ 125,000	$ 45,000	$ 55,000	$ 35,000