Note 14 - Income Taxes (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Deferred Tax Liability From Fixed Interest Rate Hedge		$ 760
Open Tax Year		2016 2017 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	21.00%	35.00%
Increase (Decrease) in Deferred Tax Liabilities Resulting From Tax Act	$ (6,200)
Income Tax Expense (Benefit), Total		$ 1,433	$ 12,305	$ (2,613)
Income Taxes Paid, Net, Total		$ 500	$ 11,300	$ 9,400
Restatement Adjustment [Member]
Income Tax Expense (Benefit), Total	$ 1,900