v3.19.3

Share-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation expense in stock compensation plans	$ 247,301	$ 317,526	$ 1,100,000	$ 1,400,000
Income tax benefit of stock compensation plans	51,933	66,680	233,851	285,578
Unrecognized compensation expense related to nonvested share-based compensation granted under the plan	1,300,000		$ 1,300,000
Weighted average period of unrecognized compensation expense			1 year 6 months
Cash from option exercises	772,969	217,112	$ 1,600,000	695,762
Tax benefit for tax deductions related to option exercises	$ 22,414	$ 2,516	$ 38,376	$ 21,319

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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