Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 132,000		$ 132,000
Depreciation expense	24,400	34,200
Potential common shares issuable	67.2
Cash, insured limit	250,000
Number of banks where cash is maintained	2
Cost of sales
Summary Of Significant Accounting Policies [Line Items]
Depreciation expense	20,600	33,900
Bank One
Summary Of Significant Accounting Policies [Line Items]
Cash, insured limit	800,000		300,000
Rutgers
Summary Of Significant Accounting Policies [Line Items]
Accrued Royalties	$ 50,000		$ 50,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	2 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives	20 years