Major Classes of Assets and Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Receivables, net	$ 14,000
Inventory	0
Prepaid expenses and other current assets	4,000
Total current assets	18,000	184,000
Other assets	19,000
Total assets	37,000
Current liabilities:
Accounts payable and accrued expenses	2,348,000
Total current liabilities	2,348,000	4,858,000
Long-term lease obligations	1,712,000
Total liabilities	$ 4,060,000