Share-Based Compensation - Schedule of Activity Related to Stock Options Awards, Restricted Stock Awards (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2020 $ / shares shares	Jun. 30, 2020 $ / shares shares	Jun. 30, 2019 $ / shares shares
Stock Options
Avg wtd grant-date fair value
Outstanding at beginning of period		$ 3.83	$ 3.79
Forfeited		6.34	6.51
Exercised		3.74	3.23
Outstanding at end of the period	$ 3.84	3.84	3.79
Vested		3.67	3.41
Unvested		5.20	5.00
Avg wtd exercise price
Outstanding at beginning of period		6.27	6.12
Forfeited		13.86	14.26
Exercised		5.89	4.30
Outstanding at end of the period	6.28	6.28	6.13
Vested	$ 5.78	5.78	4.98
Unvested		$ 10.35	$ 9.79
Units
Outstanding at beginning of period | shares		7,880,167	9,070,052
Reversal of Forfeited | shares		1,272
Forfeited | shares			(36,774)
Exercised | shares		(287,621)	(222,084)
Outstanding at end of the period | shares	7,593,818	7,593,818	8,811,194
Vested | shares		6,758,066	6,691,308
Unvested | shares	835,752	835,752	2,119,886
Restricted Shares
Avg wtd grant-date fair value
Unvested at beginning of period		$ 14.29	$ 13.17
Granted		16.18	16.02
Vested		14.66	13.41
Forfeited		17.29	14.02
Unvested at end of period	$ 14.45	$ 14.45	$ 13.87
Units
Unvested at beginning of period | shares		3,215,619	2,997,856
Granted | shares	20,394	297,833	995,669
Vested | shares		(892,921)	(43,996)
Forfeited | shares		(18,277)	(367,998)
Unvested at end of period | shares	2,602,254	2,602,254	3,581,531