REVENUE RECOGNITION LONGTERM CONTRACTS AND DEFERRED AND UNBILLED REVENUE (Tables)
|3 Months Ended|
Mar. 31, 2019
|Revenue from Contract with Customer [Abstract]|
|Contract with Customer, Asset and Liability||The following is a summary of our unbilled and deferred revenue and related activity:
Tabular disclosure of contract balances and changes in contract balances.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef