Note 10 - Product Warranty Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended March 31,
	2019			2018
Balance at beginning of period	$	41,785		$	35,422
Product warranty reserve assumed in acquisition		212			-
Payments		(5,634	)		(4,985	)
Provision for warranty issued		6,960			5,203
Changes in estimates for pre-existing warranties		239			679
Balance at end of period	$	43,562		$	36,319

	Three Months Ended March 31,
	2019			2018
Balance at beginning of period	$	68,340		$	57,854
Deferred revenue contracts issued		5,800			4,716
Amortization of deferred revenue contracts		(3,296	)		(2,457	)
Balance at end of period	$	70,844		$	60,113

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

Remainder of 2019	$	10,433
2020		14,333
2021		13,157
2022		11,071
2023		8,173
After 2023		13,677
Total	$	70,844

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

	March 31,		December 31,
	2019		2018
Product warranty liability
Current portion - other accrued liabilities	$	25,559	$	25,396
Long-term portion - other long-term liabilities		18,003		16,389
Total	$	43,562	$	41,785
Deferred revenue related to extended warranties
Current portion - other accrued liabilities	$	13,930	$	13,646
Long-term portion - other long-term liabilities		56,914		54,694
Total	$	70,844	$	68,340