FAIR VALUE OF FINANCIAL INSRUMENTS - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets:
Restricted assets	$ 931	$ 2,251
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Assets:
Restricted assets	931	2,251
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Restricted Assets - Capital Projects
Assets:
Restricted assets	0	1,348
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Restricted Assets - Landfill Closure
Assets:
Restricted assets	$ 931	903
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Liabilities:
Interest rate derivative		$ 178