Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000313716 (http://www.sec.gov/CIK)

Product Warranties Disclosures [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31	2015-01-01 - 2015-12-31
Product Warranties Disclosures [Abstract]
Changes in product warranty accrual
Balance at the beginning of period	3,802,000	3,891,000
Warranties issued	2,117,000	2,863,000
Warranty settlement costs	(2,329,000)	(2,741,000)
Changes in accruals for pre-existing warranties	68,000	(157,000)
Currency translation adjustments	(102,000)	(54,000)
Balance at the end of period	3,556,000	3,802,000