INTANGIBLE ASSETS - Schedule of Finite and Indefinite Lived Intangible Assets (Details) - USD ($)	Dec. 31, 2023	Jan. 01, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Value		$ 68,208,000
Accumulated Amortization		43,200,000
Net Carrying Value	$ 30,370,000	25,008,000
Intangible assets net excluding goodwill gross	79,682,000	92,185,000
Intangible assets accumulated amortization	49,312,000	44,633,000
Intangible assets, net (excluding goodwill), total	30,370,000	47,552,000
Trade Names
Finite-Lived Intangible Assets [Line Items]
Indefinite lived intangible assets excluding goodwill gross		23,977,000
Indefinite lived intangible assets accumulated amortization		1,433,000
Indefinite-lived intangible assets (excluding goodwill)		22,544,000
Client Partner List
Finite-Lived Intangible Assets [Line Items]
Gross Value	69,114,000	58,609,000
Accumulated Amortization	44,150,000	38,227,000
Net Carrying Value	24,964,000	20,382,000
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Value	2,743,000	2,391,000
Accumulated Amortization	2,153,000	1,886,000
Net Carrying Value	590,000	505,000
Computer software
Finite-Lived Intangible Assets [Line Items]
Gross Value	7,825,000	7,208,000
Accumulated Amortization	3,009,000	3,087,000
Net Carrying Value	$ 4,816,000	$ 4,121,000