LEASES - Maturities of operating lease liabilities (Details) $ in Thousands	Mar. 31, 2020 USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
One year	$ 8,136
Two years	10,421
Three years	10,101
Four years	10,120
Five years	8,402
Thereafter	42,730
Total undiscounted lease payments	89,910
Less: Present value discount	(14,786)
Lease Liability	$ 75,124