Share Repurchase Programs (Detail) - USD ($)	3 Months Ended	92 Months Ended
Mar. 31, 2022	Mar. 31, 2022	Aug. 31, 2014
Equity [Abstract]
Stock repurchase program, authorized amount			$ 50,000,000
Purchase of common stock, shares (in shares)	0	1,416,587
Common stock repurchased		$ 22,000,000
Remaining repurchase amount	$ 28,000,000	$ 28,000,000

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	debit
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