Intangible Assets and Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	$ 164,853		$ 164,853		$ 152,074
Amortizable intangible assets, Accumulated Amortization	115,253		115,253		101,774
Amortizable intangible assets, Net Balance	49,600		49,600		50,300
Non-amortizable intangible assets
Total intangible assets, Gross Carrying Amount	204,607		204,607		190,751
Total intangible assets, Accumulated Amortization (Excluding Goodwill)	117,371		117,371		103,892
Total intangible assets, Net	87,236		87,236		86,859
Aggregate intangible amortization expense	4,700	3,800	13,100	11,300
Decrease in goodwill as a result of foreign currency translation			10,710
Trade name
Non-amortizable intangible assets
Non-amortizable intangible assets, Gross Carrying Amount	39,754		39,754		38,677
Non-amortizable intangible assets, Accumulated Amortization	2,118		2,118		2,118
Non-amortizable intangible assets, Net Balance	37,636		37,636		36,559
Patents
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	13,581		13,581		12,941
Amortizable intangible assets, Accumulated Amortization	5,900		5,900		5,260
Amortizable intangible assets, Net Balance	7,681		7,681		7,681
Customer lists
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	41,268		41,268		35,742
Amortizable intangible assets, Accumulated Amortization	24,000		24,000		20,511
Amortizable intangible assets, Net Balance	17,268		17,268		15,231
Licenses
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	83,924		83,924		78,556
Amortizable intangible assets, Accumulated Amortization	64,353		64,353		56,706
Amortizable intangible assets, Net Balance	19,571		19,571		21,850
Intellectual property
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	24,154		24,154		23,335
Amortizable intangible assets, Accumulated Amortization	19,692		19,692		18,102
Amortizable intangible assets, Net Balance	4,462		4,462		5,233
Lottery contracts
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	1,500		1,500		1,500
Amortizable intangible assets, Accumulated Amortization	1,271		1,271		1,195
Amortizable intangible assets, Net Balance	229		229		305
Non-compete
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	426		426		0
Amortizable intangible assets, Accumulated Amortization	37		37		0
Amortizable intangible assets, Net Balance	389		389		0
Barcrest
Non-amortizable intangible assets
Increase in goodwill resulting from acquisitions			2,040
Increase in Other Assets Resulting from Acquisitions			1,490
Decrease in Inventory Resulting from Acquisitions			2
Decrease in Deferred Income Taxes			1,090
Increase in current liabilities resulting from acquisition			$ 470