Quarterly report pursuant to Section 13 or 15(d)

Financing Arrangements - Additional Information (Details)

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Financing Arrangements - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Aug. 31, 2020
Sep. 27, 2018
Umpqua Credit Agreement          
Debt Instrument [Line Items]          
Credit facility borrowings outstanding $ 0 $ 0 $ 0    
Revolving Facility          
Debt Instrument [Line Items]          
Credit facility maximum borrowing capacity under loan       $ 20,000,000.0  
Revolving Facility | Umpqua Credit Agreement          
Debt Instrument [Line Items]          
Credit agreement date   Sep. 27, 2018      
Credit facility maximum borrowing capacity under loan         $ 10,000,000.0
Credit facility current borrowing capacity under loan 15,000,000.0 $ 15,000,000.0      
Letter of Credit Subfacility | Umpqua Credit Agreement          
Debt Instrument [Line Items]          
Credit facility maximum borrowing capacity under loan         $ 5,000,000.0
Proceeds from line of credit $ 5,000,000.0