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General Accounting and Disclosure Matters - Investments (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2017
Sep. 30, 2017
Jun. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Investments [Abstract]            
Pre-tax impairment charge   $ 2,500,000   $ 1,732,000 $ 2,500,000 $ 1,732,000
Pre-tax losses from equity method investment   0   68,000 0 468,000
Loss on deconsolidation of subsidiary   $ 1,870,000   0 $ 3,505,000 $ 0
Bencap LLC            
Investments [Abstract]            
Percentage of equity method investment 30.00% 0.00%     0.00%  
Maximum borrowing amount $ 1,500,000.0          
Recognized net loss from investment       (1,400,000)    
Pre-tax impairment charge       1,700,000    
Pre-tax losses from equity method investment       500,000    
Income tax benefit       $ 800,000    
Additional funding request $ 500,000          
Percentage of member interest forfeited 30.00%          
VestaCare, Inc. [Member]            
Investments [Abstract]            
Percentage of equity method investment   15.00%     15.00%  
Pre-tax impairment charge   $ 2,500,000        
Voting interest   3.00%     3.00%  
AREC [Member]            
Investments [Abstract]            
Cost method investments   $ 3,200,000     $ 3,200,000  
AREC [Member]            
Investments [Abstract]            
Loss on deconsolidation of subsidiary     $ 1,600,000      
AREC [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]            
Investments [Abstract]            
Loss on disposal   $ 1,900,000