Note 10 - Product Warranty Obligations (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Balance at beginning of period	$	38,660		$	32,813		$	35,422		$	31,695
Product warranty reserve assumed in acquisition		-			-			-			43
Payments		(5,205	)		(5,135	)		(15,097	)		(13,980	)
Provision for warranty issued		8,074			6,206			19,552			14,452
Changes in estimates for pre-existing warranties		(974	)		(705	)		678			969
Balance at end of period	$	40,555		$	33,179		$	40,555		$	33,179

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Balance at beginning of period	$	63,007		$	43,356		$	57,854		$	36,139
Deferred revenue contracts issued		4,787			12,741			15,029			23,204
Amortization of deferred revenue contracts		(2,873	)		(1,908	)		(7,962	)		(5,154	)
Balance at end of period	$	64,921		$	54,189		$	64,921		$	54,189

Schedule of Recognition of Deferred Revenue Related to Extended Warranties [Table Text Block]

Remainder of 2018	$	3,187
2019		12,941
2020		12,566
2021		10,821
2022		8,502
After 2022		16,904
Total	$	64,921

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

	September 30,		December 31,
	2018		2017
Product warranty liability
Current portion - other accrued liabilities	$	23,374	$	20,576
Long-term portion - other long-term liabilities		17,181		14,846
Total	$	40,555	$	35,422
Deferred revenue related to extended warranties
Current portion - other accrued liabilities	$	13,641	$	11,017
Long-term portion - other long-term liabilities		51,280		46,837
Total	$	64,921	$	57,854