RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE - Summary of Contract Assets and Deferred Revenue (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Contract assets	$ 3,380	$ 3,711
Long-term contract assets	1,818	2,543
Total contract assets	5,198	6,254
Deferred revenue	180,845	185,145
Long-term deferred revenue	5,866	5,344
Total deferred revenue	$ 186,711	$ 190,489

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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