Contingencies - (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014
Loss Contingencies [Line Items]
Additional warranty expense related to recall	$ 7,264	$ 11,493
Loss contingency accrual increase	7,264
Europe
Loss Contingencies [Line Items]
Additional warranty expense related to recall		3,395
North America/HME
Loss Contingencies [Line Items]
Additional warranty expense related to recall	2,625	3,164
Loss contingency accrual increase	2,625
Asia/Pacific
Loss Contingencies [Line Items]
Additional warranty expense related to recall	4,639
Loss contingency accrual increase	4,639
Field Action Under Review
Loss Contingencies [Line Items]
Additional warranty expense related to recall		6,559
Warranty Related Sieve Bed Recall
Loss Contingencies [Line Items]
Additional warranty expense related to recall		2,057
Warranty Related Recall
Loss Contingencies [Line Items]
Additional warranty expense related to recall		2,877
Warranty Related Recall | North America/HME
Loss Contingencies [Line Items]
Additional warranty expense related to recall		1,612
Warranty Related Recall | Asia/Pacific
Loss Contingencies [Line Items]
Additional warranty expense related to recall		$ 1,265