LEASES (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Maturities of Operating Lease Liabilities [Abstract]
2019	$ 3,464
2020	6,807
2021	6,728
2022	6,471
2023	5,504
Thereafter	24,437
Total undiscounted lease payments	53,411
Less amounts representing interest	6,931
Lease liability	46,480	$ 0
Other Information Related to Operating Leases [Abstract]
Operating lease cost	3,241
Cash paid for amounts included in the measurement of operating lease liabilities	$ 3,433
Weighted average remaining lease term	8 years 5 months 19 days
Weighted average discount rate	3.25%

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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