Business Segments - (Information by Segment) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2015	Sep. 30, 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
Segment Reporting Information [Line Items]
Net sales		$ 283,265	$ 283,776	$ 286,273	$ 289,024	$ 318,199	$ 320,520	$ 326,943	$ 304,501	$ 1,142,338	$ 1,270,163	$ 1,334,505
Depreciation and amortization										19,430	32,789	36,789
Net interest expense (income)										2,746	2,532	2,694
Earnings (loss) before income taxes										(11,740)	(63,210)	(43,459)
Assets		838,143				963,731				838,143	963,731	1,096,434
Long-lived assets		476,022				557,744				476,022	557,744	647,048
Expenditures for assets										7,522	12,327	14,158
North America/HME
Segment Reporting Information [Line Items]
Depreciation and amortization										8,775	10,925	12,149
Net interest expense (income)										2,080	348	(1,869)
Earnings (loss) before income taxes										(32,866)	(63,601)	(50,506)
Assets		215,500				218,877				215,500	218,877	250,239
Long-lived assets		49,319				44,727				49,319	44,727	60,309
Expenditures for assets										1,232	2,960	5,017
Institutional Products Group
Segment Reporting Information [Line Items]
Depreciation and amortization										1,980	7,656	8,310
Net interest expense (income)										1,028	2,244	3,656
Earnings (loss) before income taxes										6,757	(10,961)	1,418
Assets		38,730				42,692				38,730	42,692	45,933
Long-lived assets		30,278				33,487				30,278	33,487	38,342
Expenditures for assets										212	1,232	3,308
Europe
Segment Reporting Information [Line Items]
Depreciation and amortization										7,183	11,111	12,123
Net interest expense (income)										(444)	(209)	(53)
Earnings (loss) before income taxes										38,644	48,088	40,468
Assets		557,740				638,896				557,740	638,896	693,790
Long-lived assets		391,533				459,957				391,533	459,957	506,329
Expenditures for assets										5,058	6,708	4,809
Asia/Pacific
Segment Reporting Information [Line Items]
Depreciation and amortization										1,463	2,406	3,073
Net interest expense (income)										82	149	960
Earnings (loss) before income taxes										(3,521)	(9,485)	(13,258)
Assets		24,421				30,231				24,421	30,231	31,034
Long-lived assets		3,140				4,046				3,140	4,046	5,238
Expenditures for assets										969	1,417	830
All Other
Segment Reporting Information [Line Items]
Depreciation and amortization	[1]									29	173	275
Earnings (loss) before income taxes	[1]									(20,754)	(27,251)	(21,581)
Assets		1,752				15,647				1,752	15,647	37,142
Long-lived assets		1,752				15,527				1,752	15,527	36,830
Expenditures for assets										51	0	50
Discontinued Operations
Segment Reporting Information [Line Items]
Depreciation and amortization										0	518	859
Assets		$ 0				$ 17,388				0	17,388	38,296
Expenditures for assets										0	10	144
Operating Segments | North America/HME
Segment Reporting Information [Line Items]
Net sales										474,196	507,867	589,240
Operating Segments | Institutional Products Group
Segment Reporting Information [Line Items]
Net sales										87,137	102,796	112,290
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net sales										536,463	610,555	583,143
Operating Segments | Asia/Pacific
Segment Reporting Information [Line Items]
Net sales										44,542	48,945	49,832
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales										142,937	126,069	116,070
Intersegment Eliminations | North America/HME
Segment Reporting Information [Line Items]
Net sales										111,321	84,247	77,553
Intersegment Eliminations | Institutional Products Group
Segment Reporting Information [Line Items]
Net sales										997	6,711	5,304
Intersegment Eliminations | Europe
Segment Reporting Information [Line Items]
Net sales										9,958	8,938	8,272
Intersegment Eliminations | Asia/Pacific
Segment Reporting Information [Line Items]
Net sales										$ 20,661	$ 26,173	$ 24,941

[1] Consists of un-allocated corporate SG&A costs and intercompany profits, which do not meet the quantitative criteria for determining reportable segments.