Identified Intangible Assets and Goodwill, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	$ 66,461	$ 61,206
Accumulated amortization	46,021	42,257
Identified intangible assets, net	20,440	18,949
Goodwill	80,924	70,107	$ 55,980
Customer lists/relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	40,927	36,745
Accumulated amortization	28,437	26,243
Employment-related [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	12,850	12,242
Accumulated amortization	9,714	8,931
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	12,684	12,219
Accumulated amortization	$ 7,870	$ 7,083