Consolidated Statement Of Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Cumulative Dividends In Excess Of Net Income [Member]	Cumulative Dividends In Excess Of Net Income [Member] Revision of Prior Period, Accounting Standards Update, Adjustment	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,498,252,000	$ 446,000	$ 1,505,948,000	$ (5,331,000)		$ (3,432,000)	$ 1,497,631,000	$ 621,000
Balance, shares at Dec. 31, 2019		44,587,486
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common stockholders	105,392,000
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	96,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	98,185,000
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation								0
Dividends declared, $1.54 per share				(49,226,000)
Balance, shares at Jun. 30, 2020		44,650,002
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,503,469,000	$ 447,000	1,505,265,000	(2,618,000)		(10,735,000)	1,492,359,000	11,110,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Retained Earnings (Accumulated Deficit)					$ (4,225,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,522,945,000	$ 452,000	1,540,946,000	(22,015,000)		(7,149,000)	1,512,234,000	10,711,000
Balance, shares at Dec. 31, 2020	45,185,992	45,185,992
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, New Issues	661,951
Net income (loss) attributable to common stockholders	$ 74,513,000
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	100,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 78,129,000
Balance, shares at Jun. 30, 2021	45,850,599	45,850,599
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,557,060,000	$ 459,000	$ 1,589,205,000	$ (39,316,000)		$ (3,633,000)	$ 1,546,715,000	$ 10,345,000