Business Segments (Information by Segment) (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
Segment Reporting Information [Line Items]
Net sales	$ 268,145,000			$ 283,776,000	$ 800,734,000	$ 859,073,000
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)
Gain (Loss) on Disposition of Business	7,386,000			24,000	7,386,000	24,000
Operating Income (Loss)	2,615,000			189,000	(8,277,000)	(9,283,000)
Loss (gain) on Convertible Debt Derivatives	1,192,000			0	2,282,000	0
Interest Revenue (Expense), Net	(4,402,000)			(979,000)	(11,021,000)	(3,038,000)
Earnings (loss) before income taxes	(595,000)			(790,000)	(17,016,000)	(12,321,000)
North America/HME
Segment Reporting Information [Line Items]
Net sales	98,023,000			114,605,000	313,957,000	358,792,000
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)
Operating Income (Loss)	(10,991,000)			(8,402,000)	(23,899,000)	(23,599,000)
Institutional Products Group
Segment Reporting Information [Line Items]
Net sales	15,343,000			17,604,000	49,702,000	68,888,000
Charges	0			(1,000)	0	(73,000)	$ (73,000)	(1,924,000)	$ (267,000)	$ (35,000)	$ (123,000)
Operating Income (Loss)	1,497,000			1,437,000	4,453,000	6,067,000
Europe
Segment Reporting Information [Line Items]
Net sales	143,038,000			140,514,000	403,242,000	397,736,000
Charges	0			0	0	(160,000)
Operating Income (Loss)	11,622,000			13,609,000	24,384,000	27,731,000
Asia/Pacific
Segment Reporting Information [Line Items]
Net sales	11,741,000			11,053,000	33,833,000	33,657,000
Charges	(18,000)			10,000	(86,000)	3,000
Operating Income (Loss)	(559,000)			(362,000)	(1,599,000)	(2,537,000)
All Other
Segment Reporting Information [Line Items]
Charges								$ (2,978,000)
Operating Income (Loss)	(5,832,000)			(6,106,000)	(17,703,000)	(16,029,000)
Intersegment revenues
Segment Reporting Information [Line Items]
Net sales	33,240,000			38,108,000	104,543,000	109,482,000
Intersegment revenues | North America/HME
Segment Reporting Information [Line Items]
Net sales	25,259,000			29,753,000	79,963,000	85,026,000
Intersegment revenues | Institutional Products Group
Segment Reporting Information [Line Items]
Net sales	998,000			469,000	2,201,000	823,000
Intersegment revenues | Europe
Segment Reporting Information [Line Items]
Net sales	2,320,000			2,776,000	7,577,000	7,411,000
Intersegment revenues | Asia/Pacific
Segment Reporting Information [Line Items]
Net sales	$ 4,663,000			$ 5,110,000	$ 14,802,000	$ 16,222,000