Accrued Expenses/Accounts Payable (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Accrued Liabilities [Line Items]
Accrued interest	$ 63	$ 59
Accrued franchise taxes	457	376
Accrued compensation	180	150
Other accrued expenses	154	175
Total	$ 854	$ 760	[1]

[1] Derived from audited information