Charges Related To Restructuring Activities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 2,169,000
Charges	3,283,000	$ 102,000
Payments	(2,251,000)	(1,190,000)
Ending Balance	3,201,000
Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	2,049,000
Charges	3,136,000
Payments	(2,155,000)
Ending Balance	3,030,000
Contract Termination
Restructuring Reserve [Roll Forward]
Beginning Balance	120,000
Charges	147,000
Payments	(96,000)
Ending Balance	171,000
NA/HME
Restructuring Reserve [Roll Forward]
Beginning Balance	903,000
Charges	2,242,000	61,000
Payments	(1,584,000)
Ending Balance	1,561,000
NA/HME | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	783,000
Charges	2,095,000	$ 61,000
Payments	(1,488,000)
Ending Balance	1,390,000
NA/HME | Contract Termination
Restructuring Reserve [Roll Forward]
Beginning Balance	120,000
Charges	147,000
Payments	(96,000)
Ending Balance	171,000
Europe
Restructuring Reserve [Roll Forward]
Payments	(190,000)
Ending Balance	500,000
Europe | Severance
Restructuring Reserve [Roll Forward]
Charges	690,000
Payments	(190,000)
Ending Balance	500,000
Europe | Contract Termination
Restructuring Reserve [Roll Forward]
Charges	0
Payments	0
Ending Balance	0
Asia/Pacific
Restructuring Reserve [Roll Forward]
Payments	(228,000)
Ending Balance	123,000
Asia/Pacific | Severance
Restructuring Reserve [Roll Forward]
Charges	351,000
Payments	(228,000)
Ending Balance	123,000
Asia/Pacific | Contract Termination
Restructuring Reserve [Roll Forward]
Charges	0
Payments	0
Ending Balance	0
All Other
Restructuring Reserve [Roll Forward]
Beginning Balance	1,266,000
Payments	(249,000)
Ending Balance	1,017,000
All Other | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	1,266,000
Payments	(249,000)
Ending Balance	1,017,000
All Other | Contract Termination
Restructuring Reserve [Roll Forward]
Beginning Balance	0
Payments	0
Ending Balance	$ 0