Note 7 - Commitments and Contingencies (Detail) - Minimum Rental Commitment for Long-term Non-cancelable Leases (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
2013, remaining	$ 306
2014	590
2015	575
2016	576
2017	567
2018	563
Thereafter	4,060
Total	7,237
Operating Lease Expense, Other Expense [Member]
2013, remaining	25
2014	27
2015	12
2016	13
2017	4
Total	81
Principal Owner [Member]
2013, remaining	281
2014	563
2015	563
2016	563
2017	563
2018	563
Thereafter	4,060
Total	$ 7,156