BALANCE SHEET COMPONENTS - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	May 11, 2022 USD ($)	Apr. 16, 2022 USD ($)	Mar. 04, 2022 USD ($)
Balance Sheet Components [Line Items]
Restricted cash		$ 500	$ 500
Cash released from escrow				$ 500	$ 1,200	$ 200
Realized gains (losses)		100	100
Licensed content, net		16,628	15,168
Unamortized cost of content assets, current		3,800
Unamortized cost of content assets to be released in two years		2,300
Unamortized cost of content assets to be released in three years		1,500
Produced content, net		28,315	53,334
Unamortized cost of produced content, current		8,700
Unamortized cost of produced content to be amortized in two years		6,000
Unamortized cost of produced content to be released in three years		4,900
Impairment of content assets	$ 19,000	$ 18,970	0
Measurement Input, Discount Rate
Balance Sheet Components [Line Items]
Content assets, fair value inputs		0.140
Minimum | Measurement Input, EBITDA Multiple
Balance Sheet Components [Line Items]
Content assets, fair value inputs		0.500
Maximum | Measurement Input, EBITDA Multiple
Balance Sheet Components [Line Items]
Content assets, fair value inputs		0.680
Released, less amortization and impairment1
Balance Sheet Components [Line Items]
Licensed content, net		$ 8,271	11,154
Produced content, net		22,880	33,094
Leasehold improvements
Balance Sheet Components [Line Items]
Depreciation expense		$ 400	$ 400