LEASES - Schedule of lease balances, weighted average lease terms and discount rates (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating Lease ROU Assets	$ 87,026
Current: Operating Lease Liabilities	19,600
Long-Term: Operating Lease Liabilities	70,600
Total Operating Lease Liabilities	$ 90,200
Weighted average remaining lease term (in years)	5 years 5 months 2 days
Weighted average discount rate	6.75%