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EARNINGS PER COMMON SHARE - Calculations of Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Income (Loss):
Net income	$ 75,678	$ 28,613	$ 207,386	$ 52,135
Preferred stock dividends	(669)	(669)	(2,007)	(2,007)
Net income attributable to common stockholders	$ 75,009	$ 27,944	$ 205,379	$ 50,128
Weighted-Average Shares:
Average common shares outstanding	206,725	216,922	212,406	216,876
Average potential dilutive common shares	1,071	793	1,117	657
Average common shares outstanding - assuming dilution	207,796	217,715	213,523	217,533
Earnings per common share:
Basic	$ 0.36	$ 0.13	$ 0.97	$ 0.23
Diluted	$ 0.36	$ 0.13	$ 0.96	$ 0.23

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-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1505-109256

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- References

No definition available.

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1448-109256

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