Note 6 - Notes Payable (Detail) - Notes Payable (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Total notes payable	$ 12,436	$ 14,486
Less current portion	12,436	1,861
Note payable, net of current portion		12,625
US Bank Refinanced [Member]
Note Payable to US Bank	5,143	5,951
US Bank [Member]
Note Payable to US Bank	$ 7,293	$ 8,535