Legal Matters - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2013	May 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Settlement expense	$ 441,583
Liability and expense for estimated costs		102,000	50,000
Balance of estimated costs	10,000
Settlement expense remained unpaid and outstanding	18,000
Accrued settlement	174,000
Other accrued expenses	844,377		690,584
Customer [Member]
Loss Contingencies [Line Items]
Liquidated damages	50,000
Amount paid to customer by company	30,000
Number of monthly payments to pay damages value	5
Monthly payments to customers	6,000
Customer beginning date of monthly payments	May 01, 2013
Settlement expense	30,000
Competitor [Member]
Loss Contingencies [Line Items]
Number of monthly payments to pay damages value	29
Customer beginning date of monthly payments	Jun. 01, 2013
Settlement expense	412,000
Accrued settlement	377,000
Other accrued expenses	$ 35,000