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Transactions with Related Parties	12 Months Ended
Transactions with Related Parties	Dec. 31, 2019
Related Party Transactions [Abstract]
Transactions with Related Parties	19. TRANSACTIONS WITH RELATED PARTIES Since the IPO in 2013, certain of the Company’s stockholders have sold a total of 52.3 million shares of the Company’s common stock in secondary offerings, including 4.6 million and 8.2 million shares in the years ended December 31, 2018 and 2017, respectively. The Company has not received proceeds from the sale of shares in any of the secondary offerings. The Company purchased 0.8 million and 1.7 million of the shares sold in the secondary offerings in 2018 and 2017, respectively, from the selling stockholders at the same price per share paid by the underwriter to the selling stockholders. In the secondary offering completed March 2018, investment funds affiliated with Bain Capital Partners LLC sold their remaining holdings of the Company’s common stock.