FAIR VALUE MEASUREMENTS (financial instruments) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020
Fair value measurements, financial instruments [Line Items]
Available-for-sale debt securities		$ 13,307		$ 28,462
Long-term debt		1,682,949		840,000
Unamortized discount and debt issuance costs		19,176		0
Cash and cash equivalents [Member]
Fair value measurements, financial instruments [Line Items]
Cash and cash equivalents, fair value		41,231		123,122
Cash		41,231		123,122
Cash and cash equivalents [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Fair value measurements, financial instruments [Line Items]
Cash and cash equivalents, fair value		41,231		123,122
Funds held for customers [Member]
Fair value measurements, financial instruments [Line Items]
Cash equivalents				15,000
Cash and cash equivalents, fair value		241,488		91,287
Available-for-sale debt securities		13,307	[1]	28,462	[2]
Cash		241,488		91,287
Funds held for customers [Member] | Guaranteed investment certificate [Member]
Fair value measurements, financial instruments [Line Items]
Available-for-sale debt securities		$ 3,957		3,929
Funds held for customers [Member] | Guaranteed investment certificate [Member] | Maximum [Member]
Fair value measurements, financial instruments [Line Items]
Maturity period, debt securities		2 years
Funds held for customers [Member] | Foreign [Member]
Fair value measurements, financial instruments [Line Items]
Available-for-sale debt securities		$ 13,307		13,462
Funds held for customers [Member] | Recurring fair value measurements [Member]
Fair value measurements, financial instruments [Line Items]
Cash equivalents				15,000
Funds held for customers [Member] | Recurring fair value measurements [Member] | Foreign [Member]
Fair value measurements, financial instruments [Line Items]
Available-for-sale debt securities		13,307		13,462
Funds held for customers [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Fair value measurements, financial instruments [Line Items]
Cash and cash equivalents, fair value		241,488		91,287
Funds held for customers [Member] | Quoted prices in active markets for identical assets (Level 1) [Member] | Recurring fair value measurements [Member]
Fair value measurements, financial instruments [Line Items]
Cash equivalents				15,000
Funds held for customers [Member] | Significant other observable inputs (Level 2) [Member] | Recurring fair value measurements [Member] | Foreign [Member]
Fair value measurements, financial instruments [Line Items]
Available-for-sale debt securities		13,307		13,462
Other non-current liabilities [Member]
Fair value measurements, financial instruments [Line Items]
Derivative liability (Note 7)		(3,028)		(7,210)
Other non-current liabilities [Member] | Recurring fair value measurements [Member]
Fair value measurements, financial instruments [Line Items]
Derivative liability (Note 7)		(3,028)		(7,210)
Other non-current liabilities [Member] | Significant other observable inputs (Level 2) [Member] | Recurring fair value measurements [Member]
Fair value measurements, financial instruments [Line Items]
Derivative liability (Note 7)		(3,028)		(7,210)
Other current and non-current assets [Member]
Fair value measurements, financial instruments [Line Items]
Loans and notes receivable from distributors		21,518		37,076
Loans and notes receivable from distributors, fair value		22,344		36,950
Other current and non-current assets [Member] | Significant unobservable inputs (Level 3) [Member]
Fair value measurements, financial instruments [Line Items]
Loans and notes receivable from distributors, fair value		22,344		36,950
Current portion of long-term debt and long-term debt [Member]
Fair value measurements, financial instruments [Line Items]
Long-term debt	[3]	1,682,949
Long-term debt, fair value		1,728,515
Current portion of long-term debt and long-term debt [Member] | Significant other observable inputs (Level 2) [Member]
Fair value measurements, financial instruments [Line Items]
Long-term debt, fair value		$ 1,728,515
Long-term debt [Member]
Fair value measurements, financial instruments [Line Items]
Long-term debt				840,000
Long-term debt, fair value				840,000
Long-term debt [Member] | Significant other observable inputs (Level 2) [Member]
Fair value measurements, financial instruments [Line Items]
Long-term debt, fair value				$ 840,000

[1] Funds held for customers, as reported on the consolidated balance sheet as of December 31, 2021, also included cash of $241,488

[2] Funds held for customers, as reported on the consolidated balance sheet as of December 31, 2020, also included cash of $91,287.

[3] The carrying value of long-term debt is net of unamortized discount and debt issuance costs of $19,176.