Earnings Per Share - Schedule of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income (loss) attributable to shareholders	$ 38,717	$ (3,503)	$ 41,159	$ (2,293)
Less: Income allocated to participating securities	(223)	(400)	(251)	(869)
Income allocated to participating securities on share settled contingent consideration arrangements		(258)		(468)
Dividends declared on convertible preferred stock		(656)	(656)	(1,312)
Amortization of discount on convertible preferred stock	(248)	(745)	(993)	(1,490)
Net income (loss) attributable to common shareholders	$ 38,246	$ (5,562)	$ 39,259	$ (6,432)
Denominator:
Basic weighted-average common shares outstanding	182,971	175,011	182,597	174,951
Basic earnings (loss) per common share	$ 0.21	$ (0.03)	$ 0.22	$ (0.04)
Numerator:
Net income (loss) attributable to shareholders	$ 38,717	$ (3,503)	$ 41,159	$ (2,293)
Less: Income allocated to participating securities	(223)	(400)	(251)	(869)
Income allocated to participating securities on share settled contingent consideration arrangements		(258)		(468)
Dividends declared on convertible preferred stock		(656)	(656)	(1,312)
Amortization of discount on convertible preferred stock	$ (248)	(745)	$ (993)	(1,490)
Impact on if-converted dilutive securities	363		1,764
Net income (loss) attributable to common shares	$ 38,609	$ (5,562)	$ 41,023	$ (6,432)
Denominator:
Basic weighted-average common shares outstanding	182,971	175,011	182,597	174,951
Effect of dilutive non-participating securities	8		8
Impact on if-converted dilutive securities	10,126		9,671
Weighted-average shares for dilutive earnings per common share	193,105	175,011	192,276	174,951
Dilutive earnings (loss) per common share	$ 0.20	$ (0.03)	$ 0.21	$ (0.04)