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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Clearlake Capital Partners II (Master) L.P. | Management and Administrative Support Services |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Reimbursed out-of-pocket and other expenses | $ 3 | $ 39 | $ 23 | $ 39

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- Details
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