Note 19 - Business Segment Information - Reconciliation of Segment Gross (Loss) Profit to Consolidated Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Total gross profit from reportable segments	$ 91,432	$ 144,491	$ 79,506	$ 281,143
Selling, general and administrative expenses	73,424	70,769	224,577	193,337
Acquisition and integration expenses	2,744	9,334	15,244	44,030
Gain on sales of property and equipment	(7,101)	(3,018)	(13,936)	(5,066)
Total other income	(3,022)	(383)	(5,799)	(1,869)
Income (loss) before provision for (benefit from) income taxes	25,387	67,789	(140,580)	50,711
Operating Segments [Member]
Total gross profit from reportable segments	$ 91,432	$ 144,491	$ 79,506	$ 281,143