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.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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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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- 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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Share-based Compensation - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Shares [Member]
Stock Based Compensation [Abstract]
Unrecognized compensation cost	$ 151,000
Stock Incentive Plan [Member]
Stock Based Compensation [Abstract]
Number of shares authorized (in shares)	350,000
Stock Incentive Plan [Member] \| Restricted Shares [Member]
Stock Based Compensation [Abstract]
Recognition period for total unrecognized compensation costs	3 years
Stock Incentive Plan [Member] \| Restricted Shares [Member] \| Nonemployee Director [Member]
Stock Based Compensation [Abstract]
Compensation expense	$ 223,000	$ 168,000	$ 237,000
Stock Incentive Plan [Member] \| Performance-Based Stock Rights [Member]
Stock Based Compensation [Abstract]
Unrecognized compensation cost	83,000
Stock Incentive Plan [Member] \| Performance-Based Stock Rights [Member] \| Certain Executive Officers [Member]
Stock Based Compensation [Abstract]
Compensation expense	$ 80,000	$ 48,000	$ 42,000