Refers to the maximum vesting period of granted restricted stock.

No definition available.

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- Definition

Refers to the amount of monthly meeting fees that a director could receive if restricted stock vested.

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No definition available.

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- Definition

Refers to the amount of monthly meeting fees that a director could receive in cash.

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No definition available.

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- Definition

Refers to the amount of regular quarterly retainer if restricted stock vested.

+ References

No definition available.

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- Definition

Amount of increase to additional paid-in capital (APIC) resulting from recognition of equity-based compensation for restricted stock units.

+ References

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

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

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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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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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- Definition

Percentage of vesting of share-based compensation awards.

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Stock Based Compensation - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Apr. 22, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorizes for issuance (in shares)				500,000
Unrecognized compensation expense	$ 0
Regular quarterly board retainer if restricted stock vested	7,500
Monthly meeting fees a director could receive in cash	725
Monthly meeting fees a director could receive if restricted stock vested	$ 900
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum vesting period of granted restricted stock	36 months
Unrecognized compensation expense	$ 1,110,000		$ 538,000
Weighted average period for recognition of unrecognized compensation cost	1 year 8 months 15 days
Share based compensation expense	$ 147,000	$ 192,000
Number of shares issued (in shares)	3,477	3,251
Recognized share based compensation expense	$ 130,000	$ 117,000
Restricted Stock \| Vesting 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of remainder of restricted stock vesting each year	33.33%
Restricted Stock \| Vesting 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of remainder of restricted stock vesting each year	33.33%
Restricted Stock \| Vesting 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of remainder of restricted stock vesting each year	33.33%