Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accrued Liabilities [Line Items]
Accrued interest	$ 62	$ 59
Accrued franchise taxes	430	376
Accrued compensation	170	150
Other accrued expenses	154	175
Total	$ 816	$ 760	[1]

[1] Derived from audited information