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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 |

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 + Details
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