LEASES - Balance Sheet Information (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating lease
Operating lease right-of-use assets	$ 8,576
Current operating lease liabilities	1,655
Long-term operating lease liabilities	10,253
Total operating lease liabilities	$ 11,908
Weighted average remaining lease term (years)	6 years 4 days
Weighted average discount rate	5.15%