Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Warranty activity
Warranty reserves, beginning of the year	$ 8,886	$ 9,548	$ 8,628
Accruals for warranties issued during the year	3,656	3,208	5,016
Reductions related to pre-existing warranties	(3,042)	(2,680)	(1,502)
Warranties paid	(1,629)	(1,186)	(2,573)
Other (principally foreign currency translation)	(27)	(4)	(21)
Warranty reserves, beginning of the year	7,844	8,886	9,548
Self-insurance
Loss Contingencies [Line Items]
Insurance expense from continuing operations	13,600	19,100	32,300
Decrease in pre-tax insurance expense due to retrospective insurance reserve adjustments from continuing operations	8,500	7,000	$ 4,900
Liabilities for asserted and unasserted claims	41,800	47,900
Liabilities covered by insurance carriers	$ 3,400	$ 3,800