COMMITMENTS AND CONTINGENCIES - Reconciliation of Expected Aggregate Non-inflated, Undiscounted Amount to Amount Recognized in Statements of Financial Position (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Undiscounted liability	$ 6,603
Less discount, net	(856)
Liability balance	$ 5,747