Note 15 - Employee Benefit Plans (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011
Defined Benefit Plan, Alternative Method Used to Amortize Net Gains and Losses	10%
Contributions [Member]
Deferred Compensation Arrangement with Individual, Employer Contribution	0.45
Certain Highly Compensated Employees [Member]
Deferred Compensation Arrangement with Individual, Employer Contribution	0.15
Voluntary 401-K Plans [Member]
Deferred Compensation Arrangement with Individual, Employer Contribution	0.02
Deferred Profit Sharing [Member]
Deferred Compensation Arrangement with Individual, Employer Contribution	0.15