Summary of Significant Accounting Policies- Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Deferred revenue	$ 3,200,000		$ 3,200,000		$ 3,800,000
Sales commissions	59,000	95,000	101,000	237,000
Percentage of cash discount offered to customers			2.00%
Deferred tax assets, valuation allowance	29,300,000		29,300,000
Inventory Raw Materials	182,147		182,147		180,948
Debt Conversion, Original Debt, Amount			14,300,000
Federal R&D Tax Credit [Member]
Significant Accounting Policies [Line Items]
Deferred Tax Assets, Gross					61,000
Fulfillment Center [Member]
Significant Accounting Policies [Line Items]
Inventory Raw Materials	39,000		39,000		41,000
Genetic Test Revenue [Member]
Significant Accounting Policies [Line Items]
Breakage Revenue	92,364		156,861
Customer Payment [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	$ 554,000		$ 554,000