Charges Related To Restructuring Activities Narrative (Details) - USD ($)	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Charges	$ 508,000	$ 689,000	$ 102,000	$ 11,000	$ 1,299,000	$ 940,000	$ 1,971,000	$ 11,112,000	$ 9,336,000	$ 11,395,000	$ 10,534,000
Restructuring and Related Activities, Expected Payout Period					12 months
Payments	576,000	424,000	1,190,000		$ 2,190,000		3,723,000	11,131,000	11,844,000	9,381,000	5,555,000
Severance
Restructuring Cost and Reserve [Line Items]
Charges	494,000	298,000	102,000				1,678,000	9,841,000	8,282,000	6,775,000	8,352,000
Payments	278,000	338,000	1,057,000				3,410,000	9,618,000	9,507,000	6,469,000	3,447,000
Contract Termination
Restructuring Cost and Reserve [Line Items]
Charges	14,000	391,000	0				293,000	15,000	698,000	1,725,000	1,788,000
Payments	298,000	86,000	133,000				313,000	227,000	1,824,000	174,000	1,714,000
Product Line Discontinuance
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				0	0	0	491,000	277,000
Payments	0	0	0				0	0	151,000	340,000	277,000
Other
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				0	1,286,000	356,000	2,404,000	117,000
Payments	0	0	0				0	1,286,000	362,000	2,398,000	117,000
Europe
Restructuring Cost and Reserve [Line Items]
Charges							510,000	1,052,000	1,640,000	2,093,000	5,466,000
Payments		20,000	292,000				619,000	1,720,000	1,146,000	3,314,000	3,650,000
Europe | Severance
Restructuring Cost and Reserve [Line Items]
Charges							510,000	527,000	1,640,000	817,000	3,288,000
Payments		20,000	292,000				619,000	1,195,000	1,146,000	1,964,000	1,546,000
Europe | Contract Termination
Restructuring Cost and Reserve [Line Items]
Charges							0	0	0	53,000	1,788,000
Payments		0	0				0	0	0	127,000	1,714,000
Europe | Product Line Discontinuance
Restructuring Cost and Reserve [Line Items]
Charges							0	0	0	0	277,000
Payments		0	0				0	0	0	0	277,000
Europe | Other
Restructuring Cost and Reserve [Line Items]
Charges							0	525,000	0	1,223,000	113,000
Payments		0	0				0	525,000	0	1,223,000	113,000
Asia/Pacific
Restructuring Cost and Reserve [Line Items]
Charges	18,000	27,000	41,000				27,000	754,000	1,507,000	5,020,000	186,000
Payments	18,000	27,000	41,000				284,000	996,000	3,659,000	2,369,000	186,000
Asia/Pacific | Severance
Restructuring Cost and Reserve [Line Items]
Charges	18,000	27,000	41,000				26,000	769,000	970,000	1,681,000	186,000
Payments	18,000	27,000	41,000				26,000	769,000	1,839,000	812,000	186,000
Asia/Pacific | Contract Termination
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				1,000	15,000	534,000	1,667,000	0
Payments	0	0	0				258,000	227,000	1,660,000	42,000	0
Asia/Pacific | Product Line Discontinuance
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				0	0	0	491,000	0
Payments	0	0	0				0	0	151,000	340,000	0
Asia/Pacific | Other
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				0	0	3,000	1,181,000	0
Payments	0	0	0				0	0	9,000	1,175,000	0
NA/HME
Restructuring Cost and Reserve [Line Items]
Charges	490,000	662,000	61,000	20,000	1,213,000	710,000	1,361,000	4,404,000	5,922,000	4,247,000	4,759,000
Payments	558,000	377,000	621,000				1,124,000	6,547,000	6,864,000	3,592,000	1,667,000
NA/HME | Severance
Restructuring Cost and Reserve [Line Items]
Charges	476,000	271,000	61,000		808,000		1,069,000	4,404,000	5,405,000	4,242,000	4,755,000
Payments	260,000	291,000	488,000				1,069,000	6,547,000	6,347,000	3,587,000	1,663,000
NA/HME | Contract Termination
Restructuring Cost and Reserve [Line Items]
Charges	14,000	391,000	0		405,000		292,000	0	164,000	5,000	0
Payments	298,000	86,000	133,000				55,000	0	164,000	5,000	0
NA/HME | Product Line Discontinuance
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				0	0	0	0	0
Payments	0	0	0				0	0	0	0	0
NA/HME | Other
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0				0	0	353,000	0	4,000
Payments	0	$ 0	0				0	0	353,000	0	4,000
All Other
Restructuring Cost and Reserve [Line Items]
Charges								2,978,000
Payments			236,000				1,475,000
All Other | Severance
Restructuring Cost and Reserve [Line Items]
Charges								2,978,000
Payments			236,000				1,475,000
All Other | Contract Termination
Restructuring Cost and Reserve [Line Items]
Charges								0
Payments			0				0
All Other | Product Line Discontinuance
Restructuring Cost and Reserve [Line Items]
Charges								0
Payments			0				0
All Other | Other
Restructuring Cost and Reserve [Line Items]
Charges								0
Payments			$ 0				0
IPG
Restructuring Cost and Reserve [Line Items]
Charges	0			1,000	0	73,000	73,000	1,924,000	267,000	35,000	123,000
Payments							221,000	1,868,000	175,000	106,000	52,000
IPG | Severance
Restructuring Cost and Reserve [Line Items]
Charges							73,000	1,163,000	267,000	35,000	123,000
Payments							221,000	1,107,000	175,000	106,000	52,000
IPG | Contract Termination
Restructuring Cost and Reserve [Line Items]
Charges							0	0	0	0	0
Payments							0	0	0	0	0
IPG | Product Line Discontinuance
Restructuring Cost and Reserve [Line Items]
Charges							0	0	0	0	0
Payments							0	0	0	0	0
IPG | Other
Restructuring Cost and Reserve [Line Items]
Charges							0	761,000	0	0	0
Payments							$ 0	$ 761,000	$ 0	$ 0	$ 0
Asia/Pacific
Restructuring Cost and Reserve [Line Items]
Charges	$ 18,000			$ (10,000)	86,000	$ (3,000)
Asia/Pacific | Severance
Restructuring Cost and Reserve [Line Items]
Charges					$ 86,000