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Equity - At-The-Market Offering (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Class of Stock [Line Items]        
Gross proceeds     $ 22,946  
Commissions paid on stock issuance       $ 404
ATM Program        
Class of Stock [Line Items]        
Number of shares 0 0 990,000 0
Average sales price per share     $ 23.74  
Gross proceeds     $ 23,505  
Commissions paid on stock issuance     $ 300