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Unamortized Stock-Based Compensation Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation	$ 1,273	$ 1,806	$ 2,836	$ 3,598
Unamortized Stock-Based Compensation	13,534	14,287	13,534	14,287
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation	1,079	1,167	2,072	2,223
Unamortized Stock-Based Compensation	9,277	9,734	$ 9,277	$ 9,734
Remaining Weighted Average Period (years)			2 years 2 months 12 days	2 years 2 months 12 days
Unrestricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation	122	107	$ 239	$ 217
Unamortized Stock-Based Compensation	476	367	$ 476	$ 367
Remaining Weighted Average Period (years)			10 months 24 days	10 months 24 days
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation	72	532	$ 525	$ 1,158
Unamortized Stock-Based Compensation	$ 3,781	$ 4,186	$ 3,781	$ 4,186
Remaining Weighted Average Period (years)			2 years 1 month 6 days	2 years 1 month 6 days

X

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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