LEASES - Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
Operating lease right-of-use assets	$ 24,825	$ 17,405	$ 22,307
Operating lease, right-of-use asset, Statement of Financial Position	Other assets	Other assets	Other assets
Operating lease liabilities	$ 29,523	$ 22,579	$ 28,156
Operating lease liability, Statement of Financial Position	Other liabilities	Other liabilities	Other liabilities
Operating leases, weighted average remaining lease term	4 years	3 years 2 months 12 days	3 years 8 months 12 days
Operating lease, weighted average discount rate (as a percent)	3.30%	4.60%	4.70%
Operating Lease Expense
Single lease cost	$ 9,435	$ 8,856	$ 7,593
Cash paid for amounts included in the measurement of lease liabilities	9,617	8,833	8,218
ROU assets obtained in exchange for new lease obligations	$ 13,215	$ 1,488	$ 3,013