SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales and marketing	$ 1,745	$ 2,062	$ 1,754	$ 1,520	$ 1,599	$ 4,084	$ 3,119	$ 6,935
Technology and product development	5,780	4,513	4,425	3,783	3,214	11,169	6,997	15,935
General and administrative	7,672	7,677	7,552	8,528	11,997	14,936	20,525	35,754
Depreciation and amortization		996	991	1,052	1,068			4,107
Total operating expenses	$ 16,310	15,248	14,722	14,883	17,878	$ 32,324	$ 32,761	62,731
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, general, and administrative		14,252	13,731	13,831	16,810			58,624
Depreciation and amortization		996	991	1,052	1,068			4,107
Total operating expenses		$ 15,248	$ 14,722	$ 14,883	$ 17,878			$ 62,731

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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