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Note 10 - Product Warranty Obligations (Tables)

12 Months Ended

Dec. 31, 2014

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

		Year Ended December 31,
		2014				2013				2012

Balance at beginning of year		$	33,734			$	36,111			$	24,643
Payments			(20,615	)			(18,484	)			(19,801	)
Provision for warranties issued			22,890				33,707				34,173
Changes in estimates for pre-existing warranties			(5,100	)			(17,600	)			(2,904	)
Balance at end of year		$	30,909			$	33,734			$	36,111

		Year Ended December 31,
		2014				2013				2012

Balance at beginning of year		$	23,092			$	13,474			$	9,737
Deferred revenue on extended warranty contracts sold			7,343				11,998				5,547
Amortization of deferred revenue on extended warranty contracts			(3,242	)			(2,380	)			(1,810	)
Balance at end of year		$	27,193			$	23,092			$	13,474

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

		December 31,
		2014				2013
Product warranty liability
Current portion - other accrued liabilities		$	24,143			$	26,080
Long-term portion - other long-term liabilities			6,766				7,654
Total		$	30,909			$	33,734

Deferred revenue related to extended warranty
Current portion - other accrued liabilities		$	4,519			$	3,325
Long-term portion - other long-term liabilities			22,674				19,767
Total		$	27,193			$	23,092