Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Numerator:
Net income	$ 29,311	$ 175,309
Net income available to common stockholders	$ 29,110	$ 174,943
Denominator:
Weighted average common shares - basic (in shares)	148,624,000	147,424,000
Net income per common share — basic (in usd per share)	$ 0.20	$ 1.19
Numerator:
Net income	$ 29,311	$ 175,309
Net income available for common stockholders before allocation of net income attributable to noncontrolling interests in CPLP	$ 29,116	$ 175,245
Denominator:
Weighted average shares — basic (in shares)	148,624,000	147,424,000
Add:
Weighted average units of CPLP convertible into common shares (in shares)	25,000	1,120,000
Weighted average common shares - diluted (in shares)	148,725,000	148,561,000
Net income per common share — diluted (in usd per share)	$ 0.20	$ 1.18
Stock options outstanding (in shares)	0
Stock Options
Add:
Antidilutive securities (in shares)	0		0
Stock Options
Add:
Potential dilutive common shares - stock options (in shares)	4,000	15,000
RSU
Add:
Potential dilutive common shares - stock options (in shares)	72,000	2,000
CPLP
Numerator:
Net income attributable to other noncontrolling interests	$ (6)	$ (302)
Numerator:
Net income attributable to other noncontrolling interests	(6)	(302)
Other Noncontrolling Interests
Numerator:
Net income attributable to other noncontrolling interests	(195)	(64)
Numerator:
Net income attributable to other noncontrolling interests	$ (195)	$ (64)