Intangible Assets and Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	$ 159,509		$ 159,509		$ 152,074
Amortizable intangible assets, Accumulated Amortization	109,696		109,696		101,774
Amortizable intangible assets, Net Balance	49,813		49,813		50,300
Non-amortizable intangible assets
Total intangible assets, Gross Carrying Amount	198,839		198,839		190,751
Total intangible assets, Accumulated Amortization (Excluding Goodwill)	111,814		111,814		103,892
Total intangible assets, Net	87,025		87,025		86,859
Aggregate intangible amortization expense	4,400	3,700	8,400	7,500
Decrease in goodwill as a result of foreign currency translation			8,956
Trade name
Non-amortizable intangible assets
Non-amortizable intangible assets, Gross Carrying Amount	39,330		39,330		38,677
Non-amortizable intangible assets, Accumulated Amortization	2,118		2,118		2,118
Non-amortizable intangible assets, Net Balance	37,212		37,212		36,559
Patents
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	13,379		13,379		12,941
Amortizable intangible assets, Accumulated Amortization	5,686		5,686		5,260
Amortizable intangible assets, Net Balance	7,693		7,693		7,681
Customer lists
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	40,160		40,160		35,742
Amortizable intangible assets, Accumulated Amortization	22,464		22,464		20,511
Amortizable intangible assets, Net Balance	17,696		17,696		15,231
Licenses
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	80,689		80,689		78,556
Amortizable intangible assets, Accumulated Amortization	61,398		61,398		56,706
Amortizable intangible assets, Net Balance	19,291		19,291		21,850
Intellectual property
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	23,546		23,546		23,335
Amortizable intangible assets, Accumulated Amortization	18,895		18,895		18,102
Amortizable intangible assets, Net Balance	4,651		4,651		5,233
Lottery contracts
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	1,500		1,500		1,500
Amortizable intangible assets, Accumulated Amortization	1,246		1,246		1,195
Amortizable intangible assets, Net Balance	254		254		305
Non-compete
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	235		235		0
Amortizable intangible assets, Accumulated Amortization	7		7		0
Amortizable intangible assets, Net Balance	228		228		0
Barcrest
Non-amortizable intangible assets
Increase in goodwill resulting from acquisitions			2,400
Decrease in Inventory Resulting from Acquisitions			2,000
Increase in current liabilities resulting from acquisition			$ 400