Summary of Warrant Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Class Of Warrant Or Right [Line Items]
Beginning Balance	$ 62.01	$ 74.00	$ 144.25
Ending Balance	$ 74.95	$ 62.01	$ 74.00
Warrants
Class Of Warrant Or Right [Line Items]
Beginning Balance	720	2,168	83
Granted or Issued	2,132		2,240
Exercised	727	(1,432)	(154)
Forfeited, cancelled, or expired	31	(16)	(1)
Ending Balance	2,094	720	2,168
Warrants exercisable at December 31, 2022	2,094
Vested warrants expired during the 12 months ended December 31, 2022	(31)
Beginning Balance	$ 19.98	$ 15.50	$ 157.50
Granted or Issued	3.05		10.50
Exercised		10.75	10.00
Forfeited, cancelled, or expired	225.00	250.00	500.00
Ending Balance	10.17	$ 19.98	$ 15.50
Warrants exercisable at December 31, 2022	10.17
Vested warrants expired during the 12 months ended December 31, 2022	$ 225.00