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Revenue - Contract Balances (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2022
Dec. 31, 2021
Revenue      
Contract liabilities $ 435,000 $ 435,000 $ 946,000
Revenue recognized, included in contract balances $ 7,000 $ 738,000