Note 2 - Notes Payable (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jan. 25, 2016	Dec. 31, 2015
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	$ 14,000
Previous Credit Facility [Member]
Long-term Line of Credit				$ 0
Debt Issuance Costs, Gross	2,700,000
Amortization of Debt Issuance Costs	141,000	$ 447,000
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	13,000
Senior Notes [Member]
Debt Issuance Costs, Gross	4,900,000
Amortization of Debt Issuance Costs	426,000
Subordinated Debt [Member]
Debt Issuance Costs, Gross	865,000
Amortization of Debt Issuance Costs	57,000
Accrued Paid-in-Kind Interest, Payment at Maturity	1,772,000
Notes Payable, Net [Member]
Debt Issuance Costs, Gross	5,732,000
Amortization of Debt Issuance Costs	609,000	$ 447,000
Write off of Deferred Debt Issuance Cost	$ 140,000