Note 7 - Accrued Expenses (Detail) - Accrued Expenses (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Compensation and other benefit accruals	$ 1,938	$ 2,066
Accrued interest on Series A Preferred Stock	668	434
Other accruals	3,870	2,581
Total accrued liabilities	$ 6,476	$ 5,081