COMMITMENTS AND CONTINGENCIES - The Company's right-of-use assets and lease liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Right-of-use assets:
Operating	$ 5,988
Finance	3,979	$ 3,800
Finance			$ 3,843
Lease liabilities:
Operating	13,574
Finance	$ 3,440	$ 3,400
Finance			$ 3,360

Lease Liabilities [Abstract]

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- Definition

Right Of Use Assets [Abstract]

+ References

No definition available.

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

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- Definition

The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

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- Definition

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

+ References

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-Publisher FASB
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- Definition

Amount of lessee's right to use underlying asset under finance lease.

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- Definition

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

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

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