Business Segments (Information by Segment) (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 170,408,000			$ 224,200,000	$ 560,413,000	$ 646,266,000
Restructuring Reserve	6,076,000	$ 4,001,000	$ 2,936,000		6,076,000		$ 482,000
Charges	(8,440,000)	(4,153,000)	(3,790,000)	(377,000)	(16,383,000)	(2,476,000)
Goodwill, Impairment Loss	0			(28,564,000)	0	(28,564,000)
Operating Loss	(33,438,000)			(24,766,000)	(64,857,000)	(33,995,000)
Interest Revenue (Expense), Net	(7,344,000)			(6,284,000)	(19,825,000)	(18,098,000)
Earnings (loss) before income taxes	(33,434,000)			(20,919,000)	(77,334,000)	(42,671,000)
Net gain on debt extinguishment	6,398,000			10,131,000	6,398,000	9,422,000
Net gain on convertible debt derivatives	950,000			0	950,000	0
Impairment of Intangible Assets (Excluding Goodwill)	(1,012,000)			0	(1,012,000)	0
Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	97,487,000			127,026,000	328,334,000	361,097,000
Restructuring Reserve	3,413,000	2,487,000	1,752,000		3,413,000
Charges	(5,034,000)	(2,613,000)	(2,119,000)	(255,000)	(9,766,000)	(1,501,000)
Operating Loss	(2,588,000)			9,554,000	4,126,000	18,378,000
North America (NA)
Segment Reporting Information [Line Items]
Net Sales	65,314,000			88,054,000	209,351,000	260,275,000
Restructuring Reserve	1,601,000	1,514,000	1,184,000		1,601,000		482,000
Restructuring Reserve, Accrual Adjustment	2,332,000				5,534,000
Charges	(2,332,000)	(1,540,000)	(1,662,000)	(122,000)	(5,534,000)	(975,000)
Operating Loss	(15,007,000)			(1,523,000)	(29,607,000)	(2,308,000)
All Other
Segment Reporting Information [Line Items]
Net Sales	7,607,000			9,120,000	22,728,000	24,894,000
Restructuring Reserve	1,062,000				1,062,000
Charges	(1,074,000)		(9,000)	0	(1,083,000)	0
Operating Loss	(6,391,000)			(3,856,000)	(21,981,000)	(19,025,000)
Operating Segments [Member] | Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	97,487,000			127,026,000	328,334,000	361,097,000
Operating Segments [Member] | North America (NA)
Segment Reporting Information [Line Items]
Net Sales	65,314,000			88,054,000	209,351,000	260,275,000
Operating Segments [Member] | All Other
Segment Reporting Information [Line Items]
Net Sales	7,607,000			9,120,000	22,728,000	24,894,000
Intersegment revenues
Segment Reporting Information [Line Items]
Net Sales	8,501,000			21,265,000	35,601,000	63,661,000
Intersegment revenues | Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	2,763,000			6,221,000	11,327,000	17,758,000
Intersegment revenues | North America (NA)
Segment Reporting Information [Line Items]
Net Sales	5,738,000			15,044,000	24,274,000	45,903,000
Severance
Segment Reporting Information [Line Items]
Restructuring Reserve	3,450,000	2,744,000	2,936,000		3,450,000		482,000
Charges	(2,223,000)	(1,830,000)	(3,252,000)
Severance | Europe (EMEA)
Segment Reporting Information [Line Items]
Restructuring Reserve	1,752,000	1,786,000	1,752,000		1,752,000
Charges	(1,033,000)	(1,288,000)	(2,119,000)			(895,000)
Severance | North America (NA)
Segment Reporting Information [Line Items]
Restructuring Reserve	636,000	958,000	1,184,000		636,000		$ 482,000
Charges	(116,000)	$ (542,000)	(1,124,000)			(975,000)
Severance | All Other
Segment Reporting Information [Line Items]
Restructuring Reserve	1,062,000				1,062,000
Charges	(1,074,000)		$ (9,000)
Contract Termination | Europe (EMEA)
Segment Reporting Information [Line Items]
Charges						(606,000)
Lifestyle Products [Domain] | Operating Segments [Member] | Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	46,881,000			61,683,000	162,942,000	181,628,000
Lifestyle Products [Domain] | Operating Segments [Member] | North America (NA)
Segment Reporting Information [Line Items]
Net Sales	34,379,000			38,666,000	102,516,000	114,951,000
Lifestyle Products [Domain] | Operating Segments [Member] | All Other
Segment Reporting Information [Line Items]
Net Sales	2,556,000			3,230,000	8,239,000	8,736,000
Mobility and Seating [Domain] | Operating Segments [Member] | Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	43,778,000			56,535,000	139,010,000	152,660,000
Mobility and Seating [Domain] | Operating Segments [Member] | North America (NA)
Segment Reporting Information [Line Items]
Net Sales	23,453,000			28,414,000	74,876,000	82,243,000
Mobility and Seating [Domain] | Operating Segments [Member] | All Other
Segment Reporting Information [Line Items]
Net Sales	3,311,000			3,171,000	8,989,000	9,239,000
Respiratory Therapy [Domain] | Operating Segments [Member] | Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	2,262,000			4,225,000	11,847,000	13,613,000
Respiratory Therapy [Domain] | Operating Segments [Member] | North America (NA)
Segment Reporting Information [Line Items]
Net Sales	7,236,000			20,856,000	31,384,000	62,429,000
Respiratory Therapy [Domain] | Operating Segments [Member] | All Other
Segment Reporting Information [Line Items]
Net Sales	407,000			1,215,000	1,538,000	2,547,000
Other [Domain] | Operating Segments [Member] | Europe (EMEA)
Segment Reporting Information [Line Items]
Net Sales	4,566,000			4,583,000	14,535,000	13,196,000
Other [Domain] | Operating Segments [Member] | North America (NA)
Segment Reporting Information [Line Items]
Net Sales	246,000			118,000	575,000	652,000
Other [Domain] | Operating Segments [Member] | All Other
Segment Reporting Information [Line Items]
Net Sales	$ 1,333,000			$ 1,504,000	$ 3,962,000	$ 4,372,000