Related Party Transactions - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class B Common Stock
Related Party Transaction [Line Items]
Right to voting	10 votes per share
LTRIP
Related Party Transaction [Line Items]
Beneficially ownership of shares of common stock	18,159,752
Percentage taken from outstanding shares of common stock	13.80%
Percentage of beneficially ownership of shares of common stock class B	21.50%
Right to voting	one vote per share
Beneficially ownership of equity securities	56.40%
Related party transactions	$ 0	$ 0	$ 0
LTRIP | Class B Common Stock
Related Party Transaction [Line Items]
Beneficially ownership of shares of common stock	12,799,999
Percentage taken from outstanding shares of common stock	100.00%
Right to voting	Ten votes per share