Fair Value Measurements - Summary of Fair Value Hierarchy for Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Liability, Noncurrent	$ 130	$ 546
Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Liability, Noncurrent	130	546
Equity, Fair Value Disclosure [Abstract]
Total liabilities	130	546
Investments:
Total assets	82	81
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Cash equivalents:
Cash equivalents	82	81
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Liability, Noncurrent		0
Equity, Fair Value Disclosure [Abstract]
Total liabilities	0	0
Investments:
Total assets	82	81
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Cash equivalents:
Cash equivalents	82	81
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Liability, Noncurrent	0	0
Equity, Fair Value Disclosure [Abstract]
Total liabilities	0	0
Investments:
Total assets	0	0
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Liability, Noncurrent	130	546
Equity, Fair Value Disclosure [Abstract]
Total liabilities	$ 130	546
Investments:
Total assets		$ 0