Note 10 - Product Warranty Obligations (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended March 31,
	2020			2019
Balance at beginning of period	$	49,316		$	41,785
Product warranty reserve assumed in acquisition		-			212
Payments		(7,588	)		(5,634	)
Provision for warranty issued		8,286			6,960
Changes in estimates for pre-existing warranties		(991	)		239
Balance at end of period	$	49,023		$	43,562

	Three Months Ended March 31,
	2020			2019
Balance at beginning of period	$	78,738		$	68,340
Deferred revenue contracts issued		5,939			5,800
Amortization of deferred revenue contracts		(3,797	)		(3,296	)
Balance at end of period	$	80,880		$	70,844

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

Remainder of 2020	$	12,192
2021		17,253
2022		15,782
2023		12,351
2024		8,173
After 2024		15,129
Total	$	80,880

Product Warranty Obligations Included In Consolidated Balance Sheet [Table Text Block]

	March 31,		December 31,
	2020		2019
Product warranty liability
Current portion - other accrued liabilities	$	27,504	$	27,885
Long-term portion - other long-term liabilities		21,519		21,431
Total	$	49,023	$	49,316
Deferred revenue related to extended warranties
Current portion - other accrued liabilities	$	18,764	$	15,519
Long-term portion - other long-term liabilities		62,116		63,219
Total	$	80,880	$	78,738