Note 9 - Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Debt [Table Text Block]

	December 31, 2018
Revolving credit facility	$	177,246
3.84% Notes		150,000
Capital leases maturing at various dates through 2022		2,693
Other long-term debt maturing at various dates up to 2023		4,584
		334,523
Less: current portion		3,915
Long-term debt - non-current	$	330,608

Schedule of Maturities of Long-term Debt [Table Text Block]

2019	$	3,914
2020		1,916
2021		30,584
2022		30,434
2023 and thereafter		267,675