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FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Restricted assets	$ 1,065	$ 1,002
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Assets:
Interest rate derivatives	0
Total	1,065
Liabilities:
Interest rate derivatives	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Restricted investments - landfill closure
Assets:
Restricted assets	1,065	1,002
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Assets:
Interest rate derivatives	95
Total	95
Liabilities:
Interest rate derivatives	373
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Restricted investments - landfill closure
Assets:
Restricted assets	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Assets:
Interest rate derivatives	0
Total	0
Liabilities:
Interest rate derivatives	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Restricted investments - landfill closure
Assets:
Restricted assets	$ 0	$ 0

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

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