CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Class A Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interest Joint Ventures	Non-controlling Interest Principal Equityholders
Balance, beginning of period at Dec. 31, 2015								$ (17,997)
Increase (Decrease) in Stockholders' Equity
Net income	$ 130,452
Repurchase of common stock		$ (28,500)
Repurchase of common stock, shares		(1,918,999)
Balance, end of period at Sep. 30, 2016								(18,115)
Balance, beginning of period at Dec. 31, 2016	2,160,202		$ 0	$ 1	$ 384,709	$ (43,524)	$ 228,613	(17,989)	$ 1,525	$ 1,606,867
Balance, beginning of period, shares at Dec. 31, 2016			30,486,858	88,942,052		2,853,433
Increase (Decrease) in Stockholders' Equity
Net income	146,224						68,789		625	76,810
Exchange of New TMM Units and corresponding number of Class B Common Stock, shares			191,333	(191,333)
Cancellation of forfeited New TMM Units and corresponding number of Class B Common Stock, shares				(1,592)
Exercise of stock options	4,791				4,791
Exercise of stock options, shares			265,167
Issuance of restricted stock units, net of shares withheld for tax	(307)				(307)
Issuance of restricted stock units, net of shares withheld for tax, shares			59,765
Repurchase of common stock	(4,098)	$ (4,100)				$ (4,098)
Repurchase of common stock, shares		(195,824)	(195,824)			(195,824)
Exchange of (repurchase) of B shares from secondary offerings	748,097		$ 1		748,096
Exchange of (repurchase) of B shares from secondary offerings, shares			41,500,000
Repurchase of New TMM Units from principal equityholders	(750,194)			$ (1)						(750,193)
Repurchase of New TMM Units from principal equityholders. shares				(41,500,000)
Share based compensation	10,227				4,921					5,306
Changes in non-controlling interests of consolidated joint ventures	(292)								(292)
Balance, end of period at Sep. 30, 2017	$ 2,314,650		$ 1	$ 0	$ 1,142,210	$ (47,622)	$ 297,402	$ (17,989)	$ 1,858	$ 938,790
Balance, end of period, shares at Sep. 30, 2017			72,307,299	47,249,127		3,049,257