Charges Related To Restructuring Activities (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 4,466,000	$ 4,485,000	$ 4,485,000	$ 6,993,000	$ 4,979,000	$ 0
Charges	240,000	2,240,000	11,112,000	9,336,000	11,395,000	10,534,000
Payments	(1,882,000)		(11,131,000)	(11,844,000)	(9,381,000)	(5,555,000)
Ending Balance	2,824,000		4,466,000	4,485,000	6,993,000	4,979,000
Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	4,209,000	3,986,000	3,986,000	5,211,000	4,905,000	0
Charges	239,000		9,841,000	8,282,000	6,775,000	8,352,000
Payments	(1,624,000)		(9,618,000)	(9,507,000)	(6,469,000)	(3,447,000)
Ending Balance	2,824,000		4,209,000	3,986,000	5,211,000	4,905,000
Product Line Discontinuance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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	151,000	0
Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	257,000	499,000	499,000	1,625,000	74,000	0
Charges	1,000		15,000	698,000	1,725,000	1,788,000
Payments	(258,000)		(227,000)	(1,824,000)	(174,000)	(1,714,000)
Ending Balance	0		257,000	499,000	1,625,000	74,000
Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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	6,000	0
NA/HME
Restructuring Reserve [Roll Forward]
Beginning Balance	662,000	2,805,000	2,805,000	3,747,000	3,092,000
Charges	199,000	803,000	4,404,000	5,922,000	4,247,000	4,759,000
Payments	(93,000)		(6,547,000)	(6,864,000)	(3,592,000)	(1,667,000)
Ending Balance	768,000		662,000	2,805,000	3,747,000	3,092,000
NA/HME | Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	662,000	2,805,000	2,805,000	3,747,000	3,092,000
Charges	199,000		4,404,000	5,405,000	4,242,000	4,755,000
Payments	(93,000)		(6,547,000)	(6,347,000)	(3,587,000)	(1,663,000)
Ending Balance	768,000		662,000	2,805,000	3,747,000	3,092,000
NA/HME | Product Line Discontinuance [Member]
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	0
NA/HME | Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0	0	0
Charges	0		0	164,000	5,000	0
Payments	0		0	(164,000)	(5,000)	0
Ending Balance	0		0	0	0	0
NA/HME | Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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
IPG
Restructuring Reserve [Roll Forward]
Beginning Balance	148,000	92,000	92,000	0	71,000
Charges	0	1,059,000	1,924,000	267,000	35,000	123,000
Payments	(148,000)		(1,868,000)	(175,000)	(106,000)	(52,000)
Ending Balance	0		148,000	92,000	0	71,000
IPG | Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	148,000	92,000	92,000	0	71,000
Charges			1,163,000	267,000	35,000	123,000
Payments	(148,000)		(1,107,000)	(175,000)	(106,000)	(52,000)
Ending Balance	0		148,000	92,000	0	71,000
IPG | Product Line Discontinuance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0	0	0
Charges			0	0	0	0
Payments	0		0	0	0	0
Ending Balance	0		0	0	0	0
IPG | Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0	0	0
Charges			0	0	0	0
Payments	0		0	0	0	0
Ending Balance	0		0	0	0	0
IPG | Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0	0	0
Charges			761,000	0	0	0
Payments	0		(761,000)	0	0	0
Ending Balance	0		0	0	0	0
Europe
Restructuring Reserve [Roll Forward]
Beginning Balance	421,000	1,089,000	1,089,000	595,000	1,816,000
Charges	40,000		1,052,000	1,640,000	2,093,000	5,466,000
Payments	(250,000)		(1,720,000)	(1,146,000)	(3,314,000)	(3,650,000)
Ending Balance	211,000		421,000	1,089,000	595,000	1,816,000
Europe | Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	421,000	1,089,000	1,089,000	595,000	1,742,000
Charges	40,000		527,000	1,640,000	817,000	3,288,000
Payments	(250,000)		(1,195,000)	(1,146,000)	(1,964,000)	(1,546,000)
Ending Balance	211,000		421,000	1,089,000	595,000	1,742,000
Europe | Product Line Discontinuance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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
Europe | Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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	74,000
Europe | Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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
Asia/Pacific
Restructuring Reserve [Roll Forward]
Beginning Balance	257,000	499,000	499,000	2,651,000	0
Charges	1,000		754,000	1,507,000	5,020,000	186,000
Payments	(258,000)		(996,000)	(3,659,000)	(2,369,000)	(186,000)
Ending Balance	0		257,000	499,000	2,651,000	0
Asia/Pacific | Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0	0	869,000	0
Charges	0		769,000	970,000	1,681,000	186,000
Payments	0		(769,000)	(1,839,000)	(812,000)	(186,000)
Ending Balance	0		0	0	869,000	0
Asia/Pacific | Product Line Discontinuance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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 | Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	257,000	499,000	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	0		257,000	499,000	1,625,000	0
Asia/Pacific | Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	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