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Investments in Foreign Joint Ventures - Schedule of Activity in Investment in Foreign Joint Ventures (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Undistributed earnings:      
Dividend distributions $ (1,387) $ (2,054)  
Foreign currency translation:      
Total investment in BOMAY at end of period 11,923   $ 11,897
Accretion of investment 97    
Accumulated accretion 280   183
Bomay      
Investment in BOMAY      
Initial investment 9,333 9,333 9,333
Undistributed earnings:      
Balance at the beginning of the period 1,908 1,257 1,257
Equity in earnings 1,267   2,705
Dividend distributions (1,387)   (2,054)
Balance at end of period 1,788   1,908
Foreign currency translation:      
Balance at the beginning of the period 656 $ (69) (69)
Change during the period 146   725
Balance at end of period 802   656
Total investment in BOMAY at end of period 11,923   11,897
Accumulated statutory reserves in equity method investments $ 2,660   $ 2,660
Ownership percentage 40.00%    
Basis difference $ 1,200    
Remaining life of joint venture 7 years