Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Common stock, par value in dollars per share	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	200,000,000
Common stock, shares issued	146,780,031	135,003,662
Common stock, shares outstanding	146,780,031	135,003,662
Assets	$ 16,958,955	$ 16,551,871
Liabilities	13,054,724	12,767,190
Variable interest entity, consolidated, carrying amount [Member]
Assets	3,587,950	1,401,691
Liabilities	$ 2,924,603	$ 1,188,732