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Note 9 - Product Warranty Obligations (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

		Three Months Ended March 31,
		2018				2017
Balance at beginning of period		$	35,422			$	31,695
Product warranty reserve assumed in acquisition			-				43
Payments			(4,985	)			(4,560	)
Provision for warranty issued			5,203				4,160
Changes in estimates for pre-existing warranties			679				670
Balance at end of period		$	36,319			$	32,008

		Three Months Ended March 31,
		2018				2017
Balance at beginning of period		$	57,854			$	36,139
Deferred revenue contracts issued			4,716				1,969
Amortization of deferred revenue contracts			(2,457	)			(546	)
Balance at end of period		$	60,113			$	37,562

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

Remainder of 2018		$	9,196
2019			12,041
2020			10,666
2021			8,703
2022			6,811
After 2022			12,696
Total		$	60,113

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

		March 31,				December 31,
		2018				2017
Product warranty liability
Current portion - other accrued liabilities		$	20,556			$	20,576
Long-term portion - other long-term liabilities			15,763				14,846
Total		$	36,319			$	35,422

Deferred revenue related to extended warranties
Current portion - other accrued liabilities		$	11,998			$	11,017
Long-term portion - other long-term liabilities			48,115				46,837
Total		$	60,113			$	57,854