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Stock-Based Compensation - Schedule of Stock Option Activity (Details)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Compensation Related Costs [Abstract]
Number of option and warrants outstanding and exercisable, beginning balance | shares	121,600
Weighted-average exercise price of option and warrants, beginning balance | $ / shares	$ 7.09
Range of exercise price per common share, beginning balance	$3.57 - $7.27
Number of option and warrants exercised | shares	0
Weighted-average exercise price of option and warrants exercised | $ / shares	$ 0
Range of exercise price per common share exercised	—
Number of option and warrants expired | shares	(115,600)
Weighted-average exercise price of option and warrants expired | $ / shares	$ 0
Range of exercise price per common share expired	7.27
Number of option and warrants outstanding and exercisable, ending balance | shares	6,000
Weighted-average exercise price of option and warrants, ending balance | $ / shares	$ 3.57
Range of exercise price per common share, ending balance	3.57

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(4)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
-Name Accounting Standards Codification
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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