LEASES - Narrative (Details) $ in Thousands		3 Months Ended			9 Months Ended
	Apr. 01, 2020 USD ($) location operating-lease	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($) location	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Right-of-use asset obtained in exchange for operating lease liability		$ 0		$ 0	$ 0	$ 0
Lease Liability		77,506			77,506		$ 76,871
Operating lease ROU assets		$ 67,554			$ 67,554		$ 69,320
Minimum
Lessee, Lease, Description [Line Items]
Renewal term		1 year			1 year
Maximum
Lessee, Lease, Description [Line Items]
Renewal term		20 years			20 years
Revere acquisition
Lessee, Lease, Description [Line Items]
Right-of-use asset obtained in exchange for operating lease liability	$ 7,400	$ 0		$ 0	$ 7,720	$ 0
Number of operating leases | operating-lease	15
Number of locations operating leases | location	12
Lease Liability	$ 8,700
Acquisition related unfavorable fair value marks	1,100
Tenant allowance	200
Expense related to lease termination	$ 2,300
Acquisition of Rembert Pendleton Jackson
Lessee, Lease, Description [Line Items]
Number of locations acquired | location			2
Right-of-use asset obtained in exchange for operating lease liability			$ 300
Lease operation commence in 2021
Lessee, Lease, Description [Line Items]
Lease Liability		2,100			2,100
Acquisition related unfavorable fair value marks		500			500
Tenant allowance		200			200
Operating lease ROU assets		$ 1,400			$ 1,400