Note 2 - Long-Term Debt (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Term Loan [Member]
Long-term debt, gross	$ 45,000,000
Note Payable, Maturing March 8, 2021 [Member]
Long-term debt, gross	$ 3,120,000	$ 2,200,000
Term Loan, Paid March 8, 2016 [Member}
Long-term debt, gross		21,750,000
Long-term debt, gross	$ 48,120,000	23,950,000
Payments due within one year included in current liabilities	6,429,000	2,750,000
Deferred borrowing costs	57,000	69,000
Long-term debt less current maturities	$ 41,634,000	$ 21,131,000