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Equity Plans (Tables)
3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan A summary of compensation costs charged to income and proceeds from the exercise of any restricted stock and similar instruments that are recorded to additional paid-in capital and common stock, by award type, are presented below for the three months ended March 31, 2020, and 2019.
 
Three months ended March 31,
 
2020
 
2019
Adjustments to additional paid-in capital and common stock for:
 
 
 
Compensation costs charged to income:
 
 
 
   ESPP
$
171

 
143

   Restricted stock and deferred restricted stock
80

 
743

Total compensation costs charged to income
$
251

 
886

ESPP proceeds
$
970

 
811