Fair Value Measurements - Additional Information (Detail) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value	$ 61,819,000	$ 192,434,000
DEG Vietnam Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Carrying value	6,250,000	6,250,000
Fair value	6,404,000	6,360,000
Fair Value, Recurring Basis
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Financial assets, fair value	0	0
Financial liabilities, fair value	0	0
Fair Value, Nonrecurring Basis
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Financial assets, fair value	0	0
Financial liabilities, fair value	$ 0	$ 0