Subsequent Events	9 Months Ended
Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	14. Subsequent Events Share Repurchase Program In November 2016, a share repurchase program was authorized for up to $200 million of our outstanding Class A common stock that remains in effect through the end of October 2018. The timing and amount of any stock repurchases will be determined based on market conditions, share price and other factors. The program does not require us to repurchase any specific number of shares of our Class A common stock, and may be modified, suspended or terminated at any time without notice. The stock repurchase program will be funded from existing cash on hand or other sources of funding as the Company may determine to be appropriate. Share repurchases under these authorizations may be made through a variety of methods, which may include open market purchases, privately negotiated transactions, block trades, accelerated share repurchase transactions, purchases through 10b5-1 plans or by any combination of such methods. Repurchases of our Class A common stock in the open market could result in increased volatility in our stock price. There is no guarantee that we will do any share repurchases under the program or otherwise in the future. Termination of Credit Agreement On November 2, 2016, the Company voluntarily terminated its Amended and Restated Revolving Credit Agreement, dated as of June 20, 2013, as amended on July 1, 2015 (as amended, the “Credit Agreement”) among the Company, the lenders party thereto and Morgan Stanley Senior Funding, Inc., as the administrative agent. Prior to its termination, the Credit Agreement provided the Company with a revolving line of credit which is described under the heading “Credit Facility” in Note 12. No principal was outstanding as of the date of termination, and since its inception in 2011 and subsequent amendment in 2013, no borrowings have been made under the credit facility. The Credit Agreement was terminated because it no longer served the Company’s needs and allows the Company to save costs otherwise incurred in connection with maintaining the line of credit.

14. Subsequent Events

Share Repurchase Program

In November 2016, a share repurchase program was authorized for up to $200 million of our outstanding Class A common stock that remains in effect through the end of October 2018. The timing and amount of any stock repurchases will be determined based on market conditions, share price and other factors. The program does not require us to repurchase any specific number of shares of our Class A common stock, and may be modified, suspended or terminated at any time without notice. The stock repurchase program will be funded from existing cash on hand or other sources of funding as the Company may determine to be appropriate. Share repurchases under these authorizations may be made through a variety of methods, which may include open market purchases, privately negotiated transactions, block trades, accelerated share repurchase transactions, purchases through 10b5-1 plans or by any combination of such methods. Repurchases of our Class A common stock in the open market could result in increased volatility in our stock price. There is no guarantee that we will do any share repurchases under the program or otherwise in the future.

Termination of Credit Agreement

On November 2, 2016, the Company voluntarily terminated its Amended and Restated Revolving Credit Agreement, dated as of June 20, 2013, as amended on July 1, 2015 (as amended, the “Credit Agreement”) among the Company, the lenders party thereto and Morgan Stanley Senior Funding, Inc., as the administrative agent. Prior to its termination, the Credit Agreement provided the Company with a revolving line of credit which is described under the heading “Credit Facility” in Note 12. No principal was outstanding as of the date of termination, and since its inception in 2011 and subsequent amendment in 2013, no borrowings have been made under the credit facility.

The Credit Agreement was terminated because it no longer served the Company’s needs and allows the Company to save costs otherwise incurred in connection with maintaining the line of credit.