ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accrued expenses and other current liabilities
Accrued advertising expense	$ 59,150	$ 54,045
Accrued compensation and benefits	16,330	14,081
Accrued professional fees	1,887	1,869
Customer deposits and escrows	7,546	8,153
Contribution to LendingTree Foundation	3,333	3,333	$ 3,300
Current lease liabilities	8,595	5,375
Other	9,890	14,340
Total accrued expenses and other current liabilities	$ 106,731	$ 101,196