Stockholders' Equity - Summary of Reconciliation of Warrants to Purchase Share of the Company's Common Stock (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Stockholders Equity Note [Abstract]
Number of Warrants, Outstanding and exercisable, Beginning balance	48,683	48,683
Number of Warrants, Expired	0	0
Number of Warrants, Outstanding and exercisable, Ending balance	48,683	48,683
Weighted Average Exercise Price, Outstanding and exercisable, Beginning balance	$ 12.33	$ 12.33
Weighted Average Exercise Price, Expired	0	0
Weighted Average Exercise Price, Outstanding and exercisable, Ending balance	$ 12.33	$ 12.33