Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Accrued Liabilities [Line Items]
Accrued interest	$ 28	$ 65
Accrued franchise and other taxes	283	484
Accrued compensation	10	190
Other accrued expenses	145	164
Total	$ 466	$ 903	[1]

[1] Derived from audited information