FAIR VALUE OF FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Restricted assets	$ 1,002	$ 2,251
Restricted assets - capital projects
Assets:
Restricted assets	0	1,348
Restricted assets - landfill closure
Assets:
Restricted assets	1,002	903
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Assets:
Restricted assets		2,251
Liabilities:
Interest rate derivative		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Restricted assets - capital projects
Assets:
Restricted assets		1,348
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Restricted assets - landfill closure
Assets:
Restricted assets	1,002	903
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Assets:
Restricted assets		0
Liabilities:
Interest rate derivative		178
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Restricted assets - capital projects
Assets:
Restricted assets		0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Restricted assets - landfill closure
Assets:
Restricted assets	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Assets:
Restricted assets		0
Liabilities:
Interest rate derivative		0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Restricted assets - capital projects
Assets:
Restricted assets		0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Restricted assets - landfill closure
Assets:
Restricted assets	$ 0	$ 0