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Stock Based Compensation - Summary of Stock Option Activity (Detail) - Class B Common Stock/New TMM Units [Member]
9 Months Ended
Sep. 30, 2016
$ / shares
shares
Shares/New TMM Units  
Number of Shares/Units, Beginning balance (in shares) | shares 1,312,874
Number of Shares/Units, Granted (in shares) | shares 0
Number of Shares/Units, Exchanges (in shares) | shares (96,444)
Number of Shares/Units, Forfeited (in shares) | shares (1,821)
Number of Shares/Units, Ending balance (in shares) | shares 1,214,609
Weighted Average Grant Date Fair Value  
Weighted Average Grant Date Fair Value, Beginning balance (usd per share) | $ / shares $ 5.45
Weighted Average Grand Date Fair Value, Granted (usd per share) | $ / shares 0.00
Weighted Average Grand Date Fair Value, Exchanges (usd per share) | $ / shares 4.52
Weighted Average Grant Date Fair Value, Forfeited (usd per share) | $ / shares 10.20
Weighted Average Grant Date Fair Value, Ending balance (usd per share) | $ / shares $ 5.44