Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Common stock, par value in dollars per share	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	147,015,818	146,780,031
Common stock, shares outstanding	147,015,818	146,780,031
Assets	$ 17,901,747	$ 16,958,955
Liabilities	13,944,792	13,054,724
Variable interest entity, consolidated, carrying amount [Member]
Assets	3,503,465	3,587,950
Liabilities	$ 2,835,376	$ 2,924,603