Note 7 - Leases (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Lease, Cost [Table Text Block]

	Year Ended December 31, 2019
Operating lease cost	$	22,235
Short-term lease cost		25,382
Total lease cost	$	47,617

	Year Ended December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	22,144
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	18,879

Lease, Supplemental Financial Statement Disclosures, Balance Sheet [Table Text Block]

	December 31, 2019(1)
Operating leases:
Operating lease assets	$	71,466
Accrued expenses	$	15,828
Other liabilities		56,253
Total operating lease liabilities	$	72,081
Weighted-average remaining lease term (in years)		5.74
Weighted-average discount rate		5.71	%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

	December 31, 2019
2020	$	18,739
2021		16,287
2022		13,509
2023		10,950
2024		7,845
Thereafter		16,358
Total undiscounted operating lease liabilities		83,688
Less: Imputed interest		(11,607	)
Total discounted operating lease liabilities	$	72,081