Note 12 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	December 31, 2019
	Carrying Amount		Fair Value		Fair Value Hierarchy
Assets:
Cash and cash equivalents:
Money market investments	$	46,051	$	46,051	Level 1
Commercial paper	$	54,919	$	54,824	Level 2
Liabilities:
Long-term debt, including current portion, excluding debt issuance costs:
Senior Credit Facilities	$	1,753,045	$	1,751,241	Level 2
Other noncurrent liabilities, including current portion:
Interest rate swaps	$	89,657	$	89,657	Level 2