Quarterly report pursuant to Section 13 or 15(d)

Leases - Supplemental Balance Sheet Information (Details)

v3.20.4
Leases - Supplemental Balance Sheet Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Apr. 01, 2019
Leases      
Operating lease right-of-use assets $ 4,830 $ 5,118 $ 5,500
Operating lease right-of-use assets, balance sheet location us-gaap:OtherAssetsNoncurrent us-gaap:OtherAssetsNoncurrent  
Operating lease liability, current $ 463 $ 443  
Operating lease liability, current, balance sheet location cpst:NotesPayableAndCapitalLeaseObligationsNoncurrent cpst:NotesPayableAndCapitalLeaseObligationsNoncurrent  
Operating lease liability, non-current $ 4,588 $ 4,941  
Operating lease liability, non-current, balance sheet location cpst:NotesPayableAndCapitalLeaseObligationsNoncurrent cpst:NotesPayableAndCapitalLeaseObligationsNoncurrent  
Total operating lease liabilities $ 5,051 $ 5,384 $ 5,800