INCOME TAXES - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Federal NOLs	$ 169,000		$ 168,000
U.S. statutory tax rate	35.00%
State income tax benefits	$ 1,000
Operating Loss Carryforwards Expiration Term	20 years
Operating Loss Carry Forwards Expiration Year	2037
Tax Credit Carryforward, Amount	$ 150
Scenario, Plan [Member]
Income Tax Disclosure [Line Items]
U.S. statutory tax rate		21.00%