Note 4 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Gross Intangibles	$ 131,060
Accumulated Amortization	15,034
Net Intangibles	$ 116,026	$ 121,336
Weighted Average Amortization Period (Year)
Customer Relationships [Member]
Gross Intangibles	$ 65,050
Accumulated Amortization	7,796
Net Intangibles	$ 57,254
Weighted Average Amortization Period (Year)	6 years 182 days
Customer-Related Intangible Assets [Member]
Gross Intangibles	$ 49,500
Accumulated Amortization	5,885
Net Intangibles	$ 43,615
Weighted Average Amortization Period (Year)	7 years 36 days
Trademarks [Member]
Gross Intangibles	$ 14,410
Accumulated Amortization	910
Net Intangibles	$ 13,500
Weighted Average Amortization Period (Year)	7 years 182 days
Other Intangible Assets [Member]
Gross Intangibles	$ 2,100
Accumulated Amortization	443
Net Intangibles	$ 1,657
Weighted Average Amortization Period (Year)	4 years 328 days