Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income	$ 20,692	$ 19,859	$ 34,115	$ 58,014
Net income available to common stockholders	$ 20,374	$ 19,485	$ 33,306	$ 56,804
Denominator:
Weighted average common shares - basic (in shares)	146,762	105,096	121,758	105,069
Net income per common share - basic (in usd per share)	$ 0.14	$ 0.19	$ 0.27	$ 0.54
Numerator:
Net income	$ 20,692	$ 19,859	$ 34,115	$ 58,014
Net income available for common stockholders before net income attributable to noncontrolling interests in CPLP	$ 20,615	$ 19,811	$ 33,870	$ 57,827
Denominator:
Weighted average shares — basic (in shares)	146,762	105,096	121,758	105,069
Add:
Potential dilutive common shares - stock options (in shares)	24	40	27	54
Weighted average units of CPLP convertible into common shares (in shares)	1,744	1,744	1,744	1,744
Weighted average common shares - diluted (in shares)	148,530	106,880	123,529	106,867
Net income per common share - diluted (in usd per share)	$ 0.14	$ 0.19	$ 0.27	$ 0.54
Stock Option
Add:
Anti-dilutive stock options outstanding (in shares)	0	0	0	2
CPLP
Numerator:
Net income attributable to other noncontrolling interests	$ (241)	$ (326)	$ (564)	$ (1,023)
Numerator:
Net income attributable to other noncontrolling interests	(241)	(326)	(564)	(1,023)
Other Noncontrolling Interests
Numerator:
Net income attributable to other noncontrolling interests	(77)	(48)	(245)	(187)
Numerator:
Net income attributable to other noncontrolling interests	$ (77)	$ (48)	$ (245)	$ (187)