Debt Narrative (Details) (USD $)			3 Months Ended	9 Months Ended	0 Months Ended	6 Months Ended	9 Months Ended		15 Months Ended			37 Months Ended			15 Months Ended			15 Months Ended																				15 Months Ended			15 Months Ended			0 Months Ended
	Sep. 30, 2013 subsidiaries	Dec. 31, 2012	Sep. 30, 2012 2012 Special Cash Dividend [Member]	Sep. 30, 2012 2012 Special Cash Dividend [Member]	Aug. 23, 2012 2012 Special Cash Dividend [Member]	Sep. 30, 2013 Economic Development Loans [Member]	Sep. 30, 2013 Economic Development Loans [Member]	Dec. 31, 2012 Economic Development Loans [Member]	Sep. 30, 2013 $400 Million Senior Notes [Member] Senior Unsecured Notes [Member]	Dec. 31, 2012 $400 Million Senior Notes [Member] Senior Unsecured Notes [Member]	Jun. 27, 2012 $400 Million Senior Notes [Member] Senior Unsecured Notes [Member] subsidiaries	Sep. 30, 2013 $250 Million Senior Notes [Member] Senior Unsecured Notes [Member]	Dec. 31, 2012 $250 Million Senior Notes [Member] Senior Unsecured Notes [Member]	Aug. 25, 2010 $250 Million Senior Notes [Member] Senior Unsecured Notes [Member] subsidiaries	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member]	Dec. 31, 2012 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member]	Jul. 25, 2012 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Base Rate [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Minimum [Member] London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Minimum [Member] Base Rate [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Maximum [Member] London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Maximum [Member] Base Rate [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Final Loan Term (Extension) [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Year 1 [Member] Maximum [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Year 2 [Member] Maximum [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Years 1 and 2 [Member] Minimum [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Year 3 [Member] Minimum [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Year 3 [Member] Maximum [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] After Year 3 [Member] Minimum [Member]	Sep. 30, 2013 $350 Million Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] After Year 3 [Member] Maximum [Member]	Sep. 30, 2013 $200 Million Revolver [Member] Line of Credit [Member]	Dec. 31, 2012 $200 Million Revolver [Member] Line of Credit [Member]	Jul. 25, 2012 $200 Million Revolver [Member] Line of Credit [Member]	Jul. 25, 2012 $200 Million Revolver [Member] Line of Credit [Member] Letter of Credit [Member]	Jul. 25, 2012 $200 Million Revolver [Member] Line of Credit [Member] Swingline Loans [Member]	Jul. 25, 2012 $200 Million Revolver [Member] Line of Credit [Member] Alternative Currency Loans [Member]	Sep. 30, 2013 $150 Million Term Loan [Member] Term Loan, Long-term [Member]	Dec. 31, 2012 $150 Million Term Loan [Member] Term Loan, Long-term [Member]	Jul. 25, 2012 $150 Million Term Loan [Member] Term Loan, Long-term [Member]	Sep. 30, 2013 $150 Million Term Loan [Member] Term Loan, Long-term [Member] Initial Loan Term [Member]	Sep. 30, 2013 $150 Million Term Loan [Member] Term Loan, Long-term [Member] Second Loan Term [Member]	Sep. 30, 2013 $150 Million Term Loan [Member] Term Loan, Long-term [Member] Final Loan Term (Extension) [Member]	Jul. 25, 2012 $300 Million Revolver [Member] [Member] Revolving Credit Facility [Member]
Debt instrument issuance date									Jun. 27, 2012			Aug. 25, 2010			Jul. 25, 2012
Debt instrument face amount											$ 400,000,000			$ 250,000,000			$ 350,000,000																							$ 150,000,000
Debt instrument stated interest rate						3.00%	3.00%				5.75%			5.70%
Debt instrument effective interest rate						3.00%	3.00%		5.94%	5.94%	5.94%	6.19%	6.19%	6.19%	2.52%	2.66%
Debt instrument maturity date									Jul. 01, 2022			Aug. 28, 2020			Jul. 25, 2016
Debt instrument payment frequency									semi-annually			semi-annually																										quarterly
Payments of Special Dividends			600,700,000	600,700,000	600,700,000
Dividends Payable, Date to be Paid					Aug. 23, 2012
Number of Domestic Subsidiaries as a Guarantee to Senior Notes	8										8			8
Senior notes, discount												400,000	500,000	600,000
Line of credit maximum borrowing capacity																																		200,000,000	25,000,000	10,000,000	35,000,000
Debt Instrument, Extension, Term																								1 year
Debt Instrument, Amortization Installment Payment Phases																																									2 years	2 years	1 year
Debt Instrument, Amortization Installment Payments, Percentage of Original Principal Balance																																									5.00%	7.50%	10.00%
Percentage Of Ownership In Certain Domestic Subsidiaries included as Security by First Priority Pledges															100.00%
Percentage of Ownership in Certain Foreign and Domestic Subsidiaries and Franchise Agreements included as Security by First Priority Pledges															65.00%
Total Leverage Ratio															4.50										5.75	5.0			4.5		4.0
Debt instrument additional borrowing capacity																	100,000,000
Debt Instrument, Description of Variable Rate Basis																		LIBOR	base rate
Debt Instrument, Basis Spread on Variable Rate																				2.00%	1.00%	4.25%	3.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage															0.30%
Credit Facility, Dividend Restrictions															50,000,000
Secured Leverage Ratio																									2.50	2.25			2.0		1.75
Fixed Charge Coverage Ratio																											2.00	2.25		2.50
Total Leverage Ratio															3.44
Maximum Secured Leverage Ratio															0.72
Minimum Fixed Charge Coverage Ratio															5.54
Total debt	825,089,000	855,345,000				3,360,000	3,360,000		400,000,000	400,000,000		249,556,000	249,508,000		170,125,000	203,250,000																29,500,000	57,000,000					140,600,000	146,300,000
Termination of Unsecured Revolving Credit Agreement																																												300,000,000
Economic Development Agreements - Total Advances Agreed Upon						4,400,000	4,400,000
Economic Development Agreements - Advances Received						3,400,000	3,400,000
Economic Development Agreements - Advances not yet Received						$ 1,000,000	$ 1,000,000
Economic Development Agreements - Measurement Frequency						annually
Economic Development Agreements - Term (in years)							10 years