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REVENUE FROM CONTACTS WITH CUSTOMERS - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2018 | Dec. 31, 2017
Revenue from External Customer [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 151,044 | $ 449,464 |
10-year agreement |  |  |
Revenue from External Customer [Line Items] |  |  |
Contract liability | 2,200 | 2,200 | $ 2,400
Decrease in Contract with Customer, Liability | 100 | 200 |
Contract with Customer, Liability, Revenue Recognized | $ 100 | 200 |
Insurance commissions [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 2,400 |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 + Details
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