Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013 segment		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of reportable segments	2
Net Sales:
Net sales	$ 209,904		$ 209,247	$ 393,380		$ 397,076
Segment EBIT:
Segment EBIT	37,434		36,824	57,900		57,043
Reconciliation of Segment EBIT to Net Income (Loss):
Retained corporate costs	(5,927)		(7,428)	(10,427)		(13,308)
Gain (loss) on redemption of debt (note 4)	(2,518)		(31,075)	(2,518)		(31,075)
Pension settlement charge	(715)		0	(715)		0
Restructuring charges (note 5)	(1,048)		0	(5,928)		0
Abandoned property (note 15)	(1,781)		0	(1,781)		0
Interest expense	(8,126)		(9,957)	(16,561)		(20,365)
Income taxes	(4,883)		1,493	(5,545)		(1,797)
Net income (loss)	12,436		(10,143)	14,425		(9,502)
Depreciation & Amortization:
Depreciation and amortization	11,623		10,288	22,397		20,824
Capital Expenditures:
Capital expenditures	10,889		5,386	19,771		11,832
Segment Assets(1):
Segment assets	267,393	[1]		267,393	[1]		238,399	[1]
Americas [Member]
Net Sales:
Net sales	141,815		148,584	265,350		278,259
Segment EBIT:
Segment EBIT	32,498		31,014	50,650		46,688
Depreciation & Amortization:
Depreciation and amortization	7,321		6,021	13,849		12,203
Capital Expenditures:
Capital expenditures	7,034		3,259	13,909		8,423
Segment Assets(1):
Segment assets	172,032	[1]		172,032	[1]		150,923	[1]
EMEA [Member]
Net Sales:
Net sales	37,981		33,723	72,223		64,515
Segment EBIT:
Segment EBIT	569		302	(914)		(278)
Depreciation & Amortization:
Depreciation and amortization	2,507		2,466	4,993		5,014
Capital Expenditures:
Capital expenditures	1,745		1,301	3,041		2,018
Segment Assets(1):
Segment assets	47,881	[1]		47,881	[1]		49,981	[1]
Other [Member]
Net Sales:
Net sales	30,108		26,940	55,807		54,302
Segment EBIT:
Segment EBIT	4,367		5,508	8,164		10,633
Depreciation & Amortization:
Depreciation and amortization	1,407		1,414	2,790		2,831
Capital Expenditures:
Capital expenditures	1,320		510	1,655		1,023
Segment Assets(1):
Segment assets	47,480	[1]		47,480	[1]		37,495	[1]
Corporate [Member]
Depreciation & Amortization:
Depreciation and amortization	388		387	765		776
Capital Expenditures:
Capital expenditures	$ 790		$ 316	$ 1,166		$ 368

[1] Segment assets are defined as net accounts receivable plus net inventory.