Contingent Liabilities and Liquidity - Additional Information (Detail) (USD $)	9 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Line Items]
Notes payable to bank, balance	$ 320,000
Amendments
Commitments and Contingencies Disclosure [Line Items]
Covenant requirements, tangible net worth	2,500,000
Covenant requirements, EBITDA coverage ratio	0.3
Notes payable to bank, balance	276,000	349,000
Stock Purchase Agreement | Amendments
Commitments and Contingencies Disclosure [Line Items]
Issuance of convertible preferred stock	$ 2,000,000