Note 2 - Notes Payable (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jan. 25, 2016	Dec. 31, 2015
Previous Credit Facility [Member]
Long-term Line of Credit				$ 0
Debt Issuance Costs, Gross	$ 2,700,000
Amortization of Debt Issuance Costs	141,000	$ 665,000
Write off of Deferred Debt Issuance Cost	140,000
Legal Fees	$ 15,000
Line of Credit Facility, Maximum Borrowing Capacity				$ 5,000,000
Line of Credit Facility, Commitment Fee Percentage	0.50%
Line of Credit Facility, Commitment Fee Amount	$ 3,000	19,000
Revolving Credit Facility [Member]
Long-term Line of Credit	0
Line of Credit Facility, Maximum Borrowing Capacity	$ 5,000,000		$ 5,000,000
Line of Credit Facility, Commitment Fee Percentage	0.75%
Line of Credit Facility, Commitment Fee Amount	$ 24,000
Senior Notes [Member]
Debt Issuance Costs, Gross	4,900,000
Amortization of Debt Issuance Costs	704,000
Subordinated Debt [Member]
Debt Issuance Costs, Gross	892,000
Amortization of Debt Issuance Costs	99,000
Accrued Paid-in-Kind Interest, Payment at Maturity	1,772,000
Notes Payable, Net [Member]
Debt Issuance Costs, Gross	5,758,000
Amortization of Debt Issuance Costs	929,000	$ 665,000
Write off of Deferred Debt Issuance Cost	$ 140,000