Warrants Associated with Term Loan - Additional Information (Detail) - Common Stock [Member] - $ / shares	Dec. 31, 2019	Dec. 31, 2016
Class of Warrant or Right [Line Items]
Number of shares issuable for warrants outstanding	11,365	10,579
Exercise price of warrants	$ 77.50	$ 77.50

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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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

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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