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Stock-Based Compensation - Summary of Unvested Stock Options (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018
Shares
Unvested, beginning of period (in shares)			48,581
Vested (in shares)			(26,549)
Canceled/Forfeited (in shares)			(500)
Unvested, end of period (in shares)	21,532		21,532
Weighted AverageGrant Date Fair Value Per Share
Unvested, weighted average grant date fair value, beginning of period (in USD per share)			$ 11.41
Vested, weighted average grant date fair value (in USD per share)			10.97
Canceled/Forfeited, weighted average grant date fair value (in USD per share)			11.93
Unvested, weighted average grant date fair value, end of period (in USD per share)	$ 11.93		$ 11.93
Stock Options
Weighted AverageGrant Date Fair Value Per Share
Unrecognized compensation cost related to unvested options	$ 192,000		$ 192,000
Unrecognized compensation cost related to awards, weighted average period for recognition			2 years
Share-based compensation expense	$ 97,140	$ 207,560

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Employee Service Share-based Compensation, Nonvested Awards, Stock Options, Weighted Average Grant Date Fair Value [Roll Forward]

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Share-based Compensation Arrangement By Share-based Payment Award, Options, Nonvested Options Canceled Or Forfeited, Number Of Shares

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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
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 1
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-Publisher FASB
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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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Unrecognized cost of unvested options awarded to employees as compensation.

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Number of non-vested options outstanding.

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Number of options vested.

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