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Description of Business and Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Assets under management $ 56,000,000  
Assets held for sale 33,017 $ 34,726
Equipment    
Assets held for sale 3,100  
Buildings    
Assets held for sale 3,800  
Land    
Assets held for sale $ 1,900