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Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument
Unamortized Debt Issuance Expense	$ 1,395	$ 84
Equipment under Finance Leases	471	526
Total debt	79,203	46,449
Less current portion of long-term debt and finance leases	2,256	12,263
Long-term debt, net of current portion and unamortized debt costs	75,552	34,186
Mortgage Payable - Paid off May 2021 | East West Bank
Debt Instrument
Long Term Debt		3,306
Equipment Loan - Paid off June 2021 | East West Bank
Debt Instrument
Long Term Debt		612
Equipment Loan - Paid off August 2021 | East West Bank
Debt Instrument
Long Term Debt		4,000
Equipment Loan - Paid off August 2021 | East West Bank
Debt Instrument
Long Term Debt		5,254
Mortgage Payable - Paid off August 2021 | East West Bank
Debt Instrument
Long Term Debt		3,334
Mortgage Payable - Due June 2027 | East West Bank
Debt Instrument
Long Term Debt	8,393	8,510
Mortgage Payable - Paid off August 2021 | Cathay Bank
Debt Instrument
Long Term Debt		7,268
Acquisition Loan - Paid off August 2021 | Cathay Bank
Debt Instrument
Long Term Debt		8,710
Line of credit - Closed June 2021 | China Everbright Bank
Debt Instrument
Long Term Debt		764
Line of Credit - Due March 2023 | China Merchant Bank
Debt Instrument
Long Term Debt		382
Line of Credit - deconsolidated | Bank of Nanjing
Debt Instrument
Long Term Debt		153
Equipment Line of Credit - Closed August 2021 | East West Bank
Debt Instrument
Long Term Debt		3,216
Term Loan - Due August 2026 | Capital One, N.A.
Debt Instrument
Long Term Debt	70,000
French Government Loan - Due July 2021 | Seine-Normandie Water Agency
Debt Instrument
Long Term Debt		64
French Government Loan 4 - Due December 2026 | Seine-Normandie Water Agency
Debt Instrument
Long Term Debt	$ 339	$ 350

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Present value of lessee's discounted obligation for lease payments from finance lease.

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