Charges Related To Restructuring Activities - (Details) - USD ($)	3 Months Ended							12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]
Beginning Balance			$ 4,466,000				$ 4,485,000	$ 4,466,000	$ 4,485,000	$ 6,993,000	$ 4,979,000	$ 0
Charges	$ 1,031,000	$ 689,000	240,000	$ 2,705,000	$ 4,077,000	$ 2,090,000	2,240,000	1,971,000	11,112,000	9,336,000	11,395,000	10,534,000
Payments								(3,723,000)	(11,131,000)	(11,844,000)	(9,381,000)	(5,555,000)
Ending Balance	2,714,000			4,466,000				2,714,000	4,466,000	4,485,000	6,993,000	4,979,000
Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			4,209,000				3,986,000	4,209,000	3,986,000	5,211,000	4,905,000	0
Charges								1,678,000	9,841,000	8,282,000	6,775,000	8,352,000
Payments								(3,410,000)	(9,618,000)	(9,507,000)	(6,469,000)	(3,447,000)
Ending Balance	2,477,000			4,209,000				2,477,000	4,209,000	3,986,000	5,211,000	4,905,000
Inventory
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	151,000	0	0
Charges								0	0	0	491,000	277,000
Payments								0	0	(151,000)	(340,000)	(277,000)
Ending Balance	0			0				0	0	0	151,000	0
Lease Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance			257,000				499,000	257,000	499,000	1,625,000	74,000	0
Charges								293,000	(15,000)	698,000	1,725,000	1,788,000
Payments								(313,000)	(227,000)	(1,824,000)	(174,000)	(1,714,000)
Ending Balance	237,000			257,000				237,000	257,000	499,000	1,625,000	74,000
Other
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	6,000	0	0
Charges								0	1,286,000	356,000	2,404,000	117,000
Payments								0	(1,286,000)	(362,000)	(2,398,000)	(117,000)
Ending Balance	0			0				0	0	0	6,000	0
North America/HME
Restructuring Reserve [Roll Forward]
Beginning Balance			662,000				2,805,000	662,000	2,805,000	3,747,000	3,092,000
Charges								1,361,000	4,404,000	5,922,000	4,247,000	4,759,000
Payments								(1,124,000)	(6,547,000)	(6,864,000)	(3,592,000)	(1,667,000)
Ending Balance	899,000			662,000				899,000	662,000	2,805,000	3,747,000	3,092,000
North America/HME | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			662,000				2,805,000	662,000	2,805,000	3,747,000	3,092,000
Charges								1,069,000	4,404,000	5,405,000	4,242,000	4,755,000
Payments								(1,069,000)	(6,547,000)	(6,347,000)	(3,587,000)	(1,663,000)
Ending Balance	662,000			662,000				662,000	662,000	2,805,000	3,747,000	3,092,000
North America/HME | Inventory
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	0	0
Charges								0	0	0	0	0
Payments								0	0	0	0	0
Ending Balance	0			0				0	0	0	0	0
North America/HME | Lease Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	0	0
Charges								292,000	0	164,000	5,000	0
Payments								(55,000)	0	(164,000)	(5,000)	0
Ending Balance	237,000			0				237,000	0	0	0	0
North America/HME | Other
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	0	0
Charges								0	0	353,000	0	4,000
Payments								0	0	(353,000)	0	(4,000)
Ending Balance	0			0				0	0	0	0	0
IPG
Restructuring Reserve [Roll Forward]
Beginning Balance			148,000				92,000	148,000	92,000		71,000
Charges								73,000	1,924,000	267,000	35,000	123,000
Payments								(221,000)	(1,868,000)	(175,000)	(106,000)	(52,000)
Ending Balance				148,000					148,000	92,000		71,000
IPG | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			148,000				92,000	148,000	92,000		71,000
Charges								73,000	1,163,000	267,000	35,000	123,000
Payments								(221,000)	(1,107,000)	(175,000)	(106,000)	(52,000)
Ending Balance				148,000					148,000	92,000		71,000
IPG | Inventory
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0		0
Charges								0	0	0	0	0
Payments								0	0	0	0	0
Ending Balance				0					0	0		0
IPG | Lease Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0		0
Charges								0	0	0	0	0
Payments								0	0	0	0	0
Ending Balance				0					0	0		0
IPG | Other
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0		0
Charges								0	761,000	0	0	0
Payments								0	(761,000)	0	0	0
Ending Balance				0					0	0		0
Europe
Restructuring Reserve [Roll Forward]
Beginning Balance			421,000				1,089,000	421,000	1,089,000	595,000	1,816,000
Charges								510,000	1,052,000	1,640,000	2,093,000	5,466,000
Payments								(619,000)	(1,720,000)	(1,146,000)	(3,314,000)	(3,650,000)
Ending Balance	312,000			421,000				312,000	421,000	1,089,000	595,000	1,816,000
Europe | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			421,000				1,089,000	421,000	1,089,000	595,000	1,742,000
Charges								510,000	527,000	1,640,000	817,000	3,288,000
Payments								(619,000)	(1,195,000)	(1,146,000)	(1,964,000)	(1,546,000)
Ending Balance	312,000			421,000				312,000	421,000	1,089,000	595,000	1,742,000
Europe | Inventory
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	0	0
Charges								0	0	0	0	277,000
Payments								0	0	0	0	(277,000)
Ending Balance	0			0				0	0	0	0	0
Europe | Lease Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	0	74,000
Charges								0	0	0	53,000	1,788,000
Payments								0	0	0	(127,000)	(1,714,000)
Ending Balance	0			0				0	0	0	0	74,000
Europe | Other
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	0	0
Charges								0	525,000	0	1,223,000	113,000
Payments								0	(525,000)	0	(1,223,000)	(113,000)
Ending Balance	0			0				0	0	0	0	0
Asia/Pacific
Restructuring Reserve [Roll Forward]
Beginning Balance			257,000				499,000	257,000	499,000	2,651,000	0
Charges								27,000	754,000	1,507,000	5,020,000	186,000
Payments								(284,000)	(996,000)	(3,659,000)	(2,369,000)	(186,000)
Ending Balance				257,000					257,000	499,000	2,651,000	0
Asia/Pacific | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	869,000	0
Charges								26,000	769,000	970,000	1,681,000	186,000
Payments								(26,000)	(769,000)	(1,839,000)	(812,000)	(186,000)
Ending Balance				0					0	0	869,000	0
Asia/Pacific | Inventory
Restructuring Reserve [Roll Forward]
Beginning Balance			0				0	0	0	151,000	0
Charges								0	0	0	491,000	0
Payments								0	0	(151,000)	(340,000)	0
Ending Balance				0					0	0	151,000	0
Asia/Pacific | Lease Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance			257,000				499,000	257,000	499,000	1,625,000	0
Charges								1,000	(15,000)	534,000	1,667,000	0
Payments								(258,000)	(227,000)	(1,660,000)	(42,000)	0
Ending Balance				257,000					257,000	499,000	1,625,000	0
Asia/Pacific | Other
Restructuring Reserve [Roll Forward]
Beginning Balance			0				$ 0	0	0	6,000	0
Charges								0	0	3,000	1,181,000	0
Payments								0	0	(9,000)	(1,175,000)	0
Ending Balance				0					0	$ 0	$ 6,000	$ 0
Other
Restructuring Reserve [Roll Forward]
Beginning Balance			2,978,000					2,978,000
Charges									2,978,000
Payments								(1,475,000)
Ending Balance	1,503,000			2,978,000				1,503,000	2,978,000
Other | Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			2,978,000					2,978,000
Charges									2,978,000
Payments								(1,475,000)
Ending Balance	1,503,000			2,978,000				1,503,000	2,978,000
Other | Inventory
Restructuring Reserve [Roll Forward]
Beginning Balance			0					0
Charges									0
Payments								0
Ending Balance	0			0				0	0
Other | Lease Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance			0					0
Charges									0
Payments								0
Ending Balance	0			0				0	0
Other | Other
Restructuring Reserve [Roll Forward]
Beginning Balance			$ 0					0
Charges									0
Payments								0
Ending Balance	$ 0			$ 0				$ 0	$ 0