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GOODWILL AND INTANGIBLE ASSETS - Summary of Intangible Amortization Expense Estimated (Detail)
$ in Thousands
Sep. 30, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Fiscal year ending December 31, 2017 $ 535
Fiscal year ending December 31, 2018 1,961
Fiscal year ending December 31, 2019 1,595
Fiscal year ending December 31, 2020 1,392
Fiscal year ending December 31, 2021 1,127
Thereafter $ 1,386