Intangible Assets (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 4,748,387	$ 4,034,888
Accumulated Amortization	(3,732,541)	(2,946,773)
Net Book Value	1,015,846	1,088,115
Master Work Order Agreement
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,050,000	1,050,000
Accumulated Amortization	(1,050,000)	(836,408)
Net Book Value		213,592
Internal use capitalized software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3,698,387	2,984,888
Accumulated Amortization	(2,682,541)	(2,110,365)
Net Book Value	$ 1,015,846	$ 874,523