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Common Shares (Tables)
 12 Months Ended
Dec. 31, 2019
Two thousand fourteen ATM program [Domain]  
Activity Under At-The-Market Share Offering Program The following table presents activity under the 2017 ATM program for the years ended December 31, 2019 and 2017:
 
Year Ended December 31,
(in thousands, except per share amounts)
2019
 
2017
Total net consideration
$
24,839.1

 
$
2,513.6

Common shares sold
224.3

 
28.1

Average price per share
$
111.88

 
$
90.44