Borrowings - Revolving Credit Facility Borrowings, Net (Details) ¥ in Millions	Mar. 31, 2023 USD ($)	Mar. 31, 2023 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CNY (¥)	Mar. 31, 2022 USD ($)
Wells Fargo Credit Facility [Member]
Bank indebtedness [Line Items]
Borrowings	$ 20,000,000		$ 25,000,000		$ 0
Revolving Credit Facility [Member]
Bank indebtedness [Line Items]
Unamortized debt issuance costs	(1,519,000)		(1,759,000)
Revolving Credit Facility Borrowings, net	31,025,000		36,111,000
Bank of China Facility [Member]
Bank indebtedness [Line Items]
Borrowings	400,000	¥ 2.6	400,000	¥ 2.6
Bank of China Facility [Member] | Revolving Credit Facility [Member]
Bank indebtedness [Line Items]
Borrowings	379,000		374,000
HSBC China Facility [Member]
Bank indebtedness [Line Items]
Borrowings	$ 12,200,000	¥ 83.6	$ 12,500,000	¥ 87.0