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Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share for Out of Money Potential Common Shares (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	916,158	1,112,293	916,158	2,890,767
Stock Options With an Exercise Price of $12.48 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	136,833	136,833	136,833	136,833
Stock Options With an Exercise Price of $12.84 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	4,167	4,167	4,167	4,167
Stock Options With an Exercise Price of $26.40 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	75,158	75,158	75,158	75,158
Stock Options With an Exercise Price of $4.67 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	0	0	0	131,816
Stock Options With an Exercise Price of $4.75 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	0	0	0	1,646,658
Stock Options With an Exercise Price of $5.76 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	0	196,135	0	196,135
Stock Options With an Exercise Price of $7.16 per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out of the money options and warrants excluded	700,000	700,000	700,000	700,000

X

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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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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