Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts receivable, allowance	$ 5,002	$ 4,269
Property, plant and equipment, accumulated depreciation	227,160	133,755
Deferred financing costs, accumulated amortization	$ 2,464	$ 608
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	68,386,944	68,546,820
Common stock, shares outstanding (in shares)	68,386,944	68,546,820