SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Derivatives and Hedging (Detail)	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($) Agreement	Mar. 15, 2016 Agreement
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps (agreement) | Agreement			1
Settlement of forward starting interest rate derivative agreements	$ 830,000
Derivative asset in other non-current assets		$ 401,000
Derivative liability in other accrued liabilities		$ 123,000
Interest Rate Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps (agreement) | Agreement		3
Total notional amount		$ 60,000,000.0
Weighted average rate paid		1.95%
Interest Rate Contracts | LIBOR
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Floor rate received		1.00%
Interest Rate Contracts - February 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total notional amount		$ 35,000,000
Interest Rate Contracts - February 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total notional amount		$ 25,000,000