XML 40 R29.htm IDEA: XBRL DOCUMENT v3.22.1
INVESTMENTS AND FAIR VALUE MEASUREMENTS - Funds Held For Clients (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Debt Securities, Available-for-sale [Line Items]      
Restricted Cash and Cash Equivalents $ 203,796 $ 185,316 $ 231,564
Debt Securities, Available-for-sale, Current 7,227 5,559  
Debt Securities, Available-for-sale, Noncurrent 27,656 26,501  
Total funds held for clients $ 238,679 $ 217,376