OTHER SHORT-TERM BORROWINGS - Summary of other short-term borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Other short-term borrowings	$ 1,862	$ 120,000
Repurchase agreements
Short-term Debt [Line Items]
Other short-term borrowings	$ 1,862
AFX
Short-term Debt [Line Items]
Other short-term borrowings		$ 120,000