Condensed Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Preferred Stock	Common Stock USD ($)	Additional Paid-In Capital USD ($)	Retained Earnings USD ($)	Accumulated Other Comprehensive (Loss) Income USD ($)
Balance at Dec. 31, 2010	$ 1,777,766		$ 779	$ 1,446,932	$ 337,940	$ (7,885)
Balance (in shares) at Dec. 31, 2010		12,275	78,414,022
Increase (Decrease) in Shareholders' Equity
Stock option activity, including tax benefit of $2,932 and $2,317 for nine months ended September 30, 2012 and 2011, respectively	27,719		5	27,714
Stock option activity (in shares)			462,009
Share activity	(27,036)		(8)	(27,028)
Share activity (in shares)			(755,517)
Restricted stock activity	3,319			3,319
Restricted stock activity (in shares)			95,995
Change in fair value of interest rate swap contracts, net of income taxes of $4,600	8,162					8,162
Change in fair value of corporate debt securities	364					364
Foreign currency translation adjustment	(610)					(610)
Cumulative-effect of adoption of amendments to ASC 924 regarding jackpot liabilities, net of income taxes of $1,068	2,911				2,911
Net income	198,320				198,320
Balance at Sep. 30, 2011	1,990,915		776	1,450,937	539,171	31
Balance (in shares) at Sep. 30, 2011		12,275	78,216,509
Balance at Dec. 31, 2011	1,971,631		756	1,385,355	583,202	2,318
Balance (in shares) at Dec. 31, 2011		12,275	76,213,126
Increase (Decrease) in Shareholders' Equity
Stock option activity, including tax benefit of $2,932 and $2,317 for nine months ended September 30, 2012 and 2011, respectively	31,470		5	31,465
Stock option activity (in shares)			452,636
Restricted stock activity	3,349			3,349
Restricted stock activity (in shares)			(4,076)
Change in fair value of corporate debt securities	134					134
Foreign currency translation adjustment	565					565
Net income	191,732				191,732
Balance at Sep. 30, 2012	$ 2,198,881		$ 761	$ 1,420,169	$ 774,934	$ 3,017
Balance (in shares) at Sep. 30, 2012		12,275	76,661,686