Valuation and Qualifying Account - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Movement in Valuation Allowances and Reserves
Accounts written-off as uncollectible	$ 96	$ 11	$ 98
Net addition to the allowance balance		28
AllianceBernstein L.P. | Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	328	311	309
Credited to Costs and Expenses	0	0	100
Deductions	96	(17)	98
Balance at End of Period	$ 232	$ 328	$ 311