Stock-Based Compensation and Stock Awards - Director Stock Compensation Awards - Additional Information (Detail) - DSA - USD ($)	1 Months Ended	12 Months Ended
Jun. 30, 2014	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fees in lieu of cash (equal to) (as a percentage)	125.00%
Director stock compensation awards expense		$ 460,884	$ 462,968	$ 405,000
Income tax benefit recognized		81,879	$ 115,002	$ 19,000
Unrecognized compensation expense related to share based compensation		$ 291,168
Period of recognition for unrecognized compensation expense related to nonvested stock options (in years)		1 year
Anti-dilutive awards (in shares)		9,291

Percentage Of Fees In Lieu Of Cash To Be Received As Share Based Compensation

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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