Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Changes in Deferred Tax Liability) (Details)

v3.21.2
Basis of Presentation, Summary of Significant Accounting Policies (Schedule of Changes in Deferred Tax Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Beginning balance at January 1, 2021      
Acquisition of Whinstone     37,761  
Deferred income tax expense $ 3,730 3,730
Ending balance at June 30, 2021 $ 41,491   $ 41,491