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Stockholders' Equity (Deficit) - Summary of Number of PSUs Granted Based on Adjusted EBITDA and Grant Date Fair Value (Detail) - PSUs – Adjusted EBITDA - $ / shares
Jul. 11, 2019
Feb. 14, 2019
Feb. 13, 2019
Feb. 13, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of units granted (in shares) 25,997 32,922 33,885 57,378
granted (in dollars per share) $ 43.22 $ 42.10 $ 42.21 $ 41.72