Note 1 - Organization and Basis of Financial Reporting (Details Textual) - USD ($)		8 Months Ended	9 Months Ended	12 Months Ended
	Jan. 25, 2016	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015	Feb. 17, 2016
Senior Notes [Member]
Debt Instrument, Term	5 years
Debt Instrument, Face Amount	$ 85,000,000
Proceeds from Issuance of Debt		$ 85,000,000
Debt Instrument, Periodic Payment			$ 1,000,000
Subordinated Debt [Member]
Debt Instrument, Term	5 years 182 days
Debt Instrument, Face Amount	$ 15,000,000				$ 15,300,000
Proceeds from Issuance of Debt		15,300,000
Revolving Credit Facility [Member]
Debt Instrument, Term	5 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 5,000,000	5,000,000	5,000,000
Error Correction from Typographical Mistake [Member] | Scenario, Previously Reported [Member]
Liabilities, Current				$ 1,181,000
Error Correction from Typographical Mistake [Member] | Restatement Adjustment [Member]
Increase (Decrease) in Operating Liabilities				637,000
Error Correction from Typographical Mistake [Member]
Liabilities, Current				1,818,000
Debt Issuance Costs, Net		15,000	15,000
Write off of Deferred Debt Issuance Cost			140,000
Liabilities, Current		$ 11,417,000	$ 11,417,000	$ 10,074,000