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Restricted Stock Awards and Restricted Stock Units (Nonvested Shares)
12 Months Ended
Dec. 31, 2018
Restricted Stock Awards And Restricted Stock Units [Abstract]  
Restricted Stock Awards And Restricted Stock Units Nonvested Shares [Text Block]
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Restricted Stock Awards and Restricted Stock Units (Nonvested Shares)
 
The 2011 Stock Option and Incentive Plan and, prior to that, the 2001 Incentive Stock Plan provide for the issuance of restricted stock awards and restricted stock units (collectively, nonvested shares) to employees, officers and directors. However, there will be no further grants made pursuant to those plans and, as of December 31, 2018, there were no nonvested shares outstanding.