Intangible Assets and Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended																	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Trade name	Dec. 31, 2012 Trade name	Jun. 30, 2013 Patents	Dec. 31, 2012 Patents	Jun. 30, 2013 Customer lists	Dec. 31, 2012 Customer lists	Jun. 30, 2013 Licenses	Dec. 31, 2012 Licenses	Jun. 30, 2013 Intellectual property	Dec. 31, 2012 Intellectual property	Jun. 30, 2013 Lottery contracts	Dec. 31, 2012 Lottery contracts	Jun. 30, 2013 Non-compete	Dec. 31, 2012 Non-compete	Dec. 31, 2012 Provoloto [Member]
Intangible assets
Increase in goodwill resulting from acquisitions																				$ 275
Decrease in allowance for doubtful accounts																				275
Amortizable intangible assets:
Amortizable intangible assets, Gross Carrying Amount	162,875		162,875		166,253			14,048	13,741	39,628	41,471	84,594	84,852	22,687	24,268	1,500	1,500	418	421
Amortizable intangible assets, Accumulated Amortization	104,608		104,608		119,627			6,540	6,113	26,220	25,349	50,977	66,688	19,383	20,107	1,348	1,297	140	73
Amortizable intangible assets, Net Balance	58,267		58,267		46,626			7,508	7,628	13,408	16,122	33,617	18,164	3,304	4,161	152	203	278	348
Non-amortizable intangible assets
Non-amortizable intangible assets, Gross Carrying Amount						38,792	39,783
Non-amortizable intangible assets, Accumulated Amortization						2,118	2,118
Non-amortizable intangible assets, Net Balance						36,674	37,665
Total intangible assets, Gross Carrying Amount	201,667		201,667		206,036
Total intangible assets, Accumulated Amortization (Excluding Goodwill)	106,726		106,726		121,745
Total intangible assets, Net	94,941		94,941		84,291
Aggregate intangible amortization expense	$ 4,900	$ 4,400	$ 9,800	$ 8,400