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Summary Of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Reconciliation Of Earnings Per Share
Earnings Per Common Share
 
Basic earnings per common share is calculated by dividing net income by the number of weighted average common shares outstanding. Diluted earnings per common share is calculated by dividing net income by the weighted average common shares outstanding and assumes the conversion of all dilutive securities when the effects of such conversion would not be anti-dilutive.
 
Earnings per common share and the weighted average number of shares used to compute net earnings per common share, basic and assuming full dilution, are reconciled below (in thousands, except per share data):
 
Year Ended December 31,
 
2019
 
2018
 
2017
 
Net
Income
 
Shares
 
Per Share
Amount
 
Net
Income
 
Shares
 
Per Share
Amount
 
Net
Income
 
Shares
 
Per Share
Amount
Basic EPS
$
(133,935
)
 
19,903

 
$
(6.73
)
 
$
(39,384
)
 
19,834

 
$
(1.99
)
 
$
11,789

 
16,674

 
$
0.71

Dilutive securities, principally common stock options
—

 
—

 
—

 
—

 
—

 
—

 
—

 
175

 
(0.01
)
Diluted EPS
$
(133,935
)
 
19,903

 
$
(6.73
)
 
$
(39,384
)
 
19,834

 
$
(1.99
)
 
$
11,789

 
16,849

 
$
0.70