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Earnings Per Share: Anti-dilutive shares (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive shares (in shares) 13 105 13 62
Equity compensation - (in shares)        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive shares (in shares) 13 29 12 26
Restricted Stock (in shares)        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive shares (in shares) 0 76 1 36