Debt (Details)	9 Months Ended		12 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Mar. 30, 2020	Aug. 05, 2014 USD ($)
Line of Credit Facility [Line Items]
Deferred costs, current	$ 1,635,000		$ 920,000
Unamortized deferred financing costs, noncurrent	671,000		1,062,000
Principal payments	36,945,000	$ 15,063,000
Working capital facility	$ 7,991,000		16,643,000
Bank Overdrafts | Minimum | India
Line of Credit Facility [Line Items]
Interest rate during period	6.75%
Bank Overdrafts | Maximum | India
Line of Credit Facility [Line Items]
Interest rate during period	9.45%
Regions Bank
Line of Credit Facility [Line Items]
Credit agreement, amount outstanding	$ 218,500,000
Regions Bank | Secured Syndicated Credit Facility, Ninth Amendment
Line of Credit Facility [Line Items]
Credit card origination costs	$ 5,700,000
Regions Bank | Secured Syndicated Credit Facility, Eighth Amendment
Line of Credit Facility [Line Items]
Credit card origination costs			4,900,000
Regions Bank | Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit agreement, maximum borrowing capacity					$ 450,000,000
Regions Bank | Revolving Credit Facility | Secured Syndicated Credit Facility, Ninth Amendment
Line of Credit Facility [Line Items]
Line of credit, interest rate percentage	5.50%
Credit agreement, average amount outstanding during period	$ 439,400,000
Credit agreement, maximum amount outstanding during period	439,400,000
Regions Bank | Revolving Credit Facility | Secured Syndicated Credit Facility, Eighth Amendment
Line of Credit Facility [Line Items]
Credit card origination costs	$ 3,400,000		$ 2,900,000
Debt, weighted average interest rate	3.50%		3.50%
Credit agreement, average amount outstanding during period			$ 438,900,000
Credit agreement, maximum amount outstanding during period			439,400,000
Regions Bank | Revolving Credit Facility | Secured Syndicated Credit Facility
Line of Credit Facility [Line Items]
Credit agreement, amount outstanding	$ 439,400,000		439,400,000
Regions Bank | Secured Term Loan
Line of Credit Facility [Line Items]
Covenant, net leverage ratio, waiver, maximum				5.0
Covenant, net leverage ratio, waiver, minimum				3.5
Regions Bank | Secured Term Loan | Secured Syndicated Credit Facility, Ninth Amendment
Line of Credit Facility [Line Items]
Line of credit, interest rate percentage	5.50%
Outstanding balance	$ 218,500,000
Loans payable, current	$ 26,400,000
Line of credit facility, due	12 months
Principal payments	$ 36,900,000
Scheduled amortization payment	16,900,000
Long-term debt	192,200,000
Regions Bank | Secured Term Loan | Secured Syndicated Credit Facility, Eighth Amendment
Line of Credit Facility [Line Items]
Credit card origination costs	2,300,000		2,000,000
Deferred costs, current	1,600,000		919,000
Unamortized deferred financing costs, noncurrent	$ 671,000		$ 1,000,000
Debt, weighted average interest rate			3.50%
Outstanding balance			$ 255,500,000
Loans payable, current			$ 22,600,000
Line of credit facility, due			12 months