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Related Party Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
BKF Capital    
Due from related party    
Due from related party, beginning balance $ 12 $ 0
Billed (or accrued) to Interlink by related party 39 2
Paid by related party to Interlink (48) (2)
Due from related party, end balance 3 0
Due to related party    
Due to related party, beginning balance 0 0
Billed (or accrued) to Interlink by related party 30 0
Paid by Interlink to related party (30) 0
Due to related party, end balance 0 0
Qualstar    
Due from related party    
Due from related party, beginning balance 85 52
Billed (or accrued) to Interlink by related party 185 208
Paid by related party to Interlink (251) (145)
Due from related party, end balance 19 115
Due to related party    
Due to related party, beginning balance 8 34
Billed (or accrued) to Interlink by related party 22 24
Paid by Interlink to related party (22) (57)
Due to related party, end balance $ 8 $ 1