Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Accounting Policy Information (Details)

v3.20.2
Basis of Presentation and Accounting Policy Information (Details) - USD ($)
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Cash and cash equivalents $ 48,229,000 $ 43,237,000 $ 35,269,000  
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows 51,016,000 $ 46,007,000 37,794,000 $ 33,841,000
COVID-19        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Canadian Emergency Wage Subsidy, amount 2,417,000      
Prepaid Expenses and Other Current Assets        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows 2,438,000   1,698,000  
Other Assets        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 349,000   $ 827,000