Note 11 - Fair Value Measurements (Details Textual) - USD ($)	3 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Minimum [Member] | Warrants Outstanding [Member]
Fair Value Assumptions, Risk Free Interest Rate	0.63%
Fair Value Assumptions, Expected Volatility Rate	12.60%
Minimum [Member]
Expected Life Of Warrants	1 year
Estimated Sales Cost Applied To Collateral	3.00%
Maximum [Member] | Warrants Outstanding [Member]
Fair Value Assumptions, Risk Free Interest Rate	1.31%
Fair Value Assumptions, Expected Volatility Rate	18.40%
Maximum [Member]
Expected Life Of Warrants	7 years
Estimated Sales Cost Applied To Collateral	6.00%
Net of Estimated Disposal Costs [Member]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 26,400,000	$ 24,700,000
Accounts Receivable Collateral [Member]
Collateral Discount Rates	55.00%
Inventory Collateral [Member]
Collateral Discount Rates	65.00%
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Warrants	$ 90,000	62,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 26,417,000	$ 24,701,000