ACCUMULATED OTHER COMPREHENSIVE INCOME - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	$ 150,522	$ 129,476	$ 216,024	$ 202,474	$ 196,239	$ 194,689	$ 174,891	$ 157,246
Foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	391			90
Unrealized gains on investment securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	0			21
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	$ 391	$ 268	$ 127	$ 111	$ 122	$ 75	$ 103	$ 41