Note 1 - Nature of Business (Details Textual) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 24, 2013 USD ($) shares	Dec. 31, 2015 shares	Dec. 31, 2014 shares
Common Class A [Member]
Common Stock, Shares, Issued	2,870,948	3,015,099	2,881,154
Common Stock, Shares, Outstanding	2,870,948	3,015,099	2,881,154
Percentage of Voting Interests Represents by Class of Common Stock, Following the Effectiveness of the Reorganization	92.50%
Common Stock, Capital Shares Reserved for Future Issuance	232,780
Common Class B [Member]
Common Stock, Shares, Issued	232,780	232,780	232,780
Common Stock, Shares, Outstanding	232,780	232,780	232,780
Percentage of Voting Interests Represents by Class of Common Stock, Following the Effectiveness of the Reorganization	7.50%
Senior Credit Facility [Member] | Reduced Amount [Member]
Long-term Debt | $	$ 133.3
Senior Credit Facility [Member]
Long-term Debt, Gross | $	162.0
Repayments of Long-term Lines of Credit | $	28.7
Line of Credit Facility, Maximum Borrowing Capacity | $	$ 5.0
Number of Reportable Segments		1
Percentage of New Class A Common Stock	50.00%