Summary of Significant Accounting Policies- Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Deferred revenue	$ 3,500,000		$ 3,800,000
Sales commissions	42,000	142,000
Percentage of cash discount offered to customers	2.00%
Deferred tax assets, valuation allowance	28,800,000
Inventory Raw Materials	199,083		180,948
Debt Conversion Converted Instrument Into Common Stock Approximate Value	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	72,000		41,000
Genetic Test Revenue [Member]
Significant Accounting Policies [Line Items]
Breakage Revenue	64,497
Customer Payment [Member]
Significant Accounting Policies [Line Items]
Deferred revenue	$ 582,000