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Income Taxes (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Statutory federal corporate income tax rate     24.50%    
Deferred taxes benefit $ (9,700)   $ 6,775 $ (2,273) $ (1,143)
Income tax ownership percentage, description     Two of these subsidiaries were 100 percent owned subsidiaries, 100 percent of the stock of both of these subsidiaries were sold to third parties. The third subsidiary was a 51 percent owned subsidiary that was accounted for under the consolidated method; 31 percent of the 51 percent ownership of the stock was sold during the year to a third party, and the investment is now accounted for under the cost method.    
Income tax (benefit) expense   $ 1,300 $ (3,118) 6,359 2,373
Deferred tax liabilities   16,300 16,300 16,300  
Liability for uncertain tax positions   865 165 865  
Interest and penalties for unrecognized tax benefits   $ 223   $ 223 $ 266
Unrecognized tax benefits released     $ 700    
September 30, 2019 [Member]          
Statutory federal corporate income tax rate     21.00%    
Tax Cuts and Jobs Act Tax Act [Member]          
Income tax reconciliation description     The Tax Cuts and Jobs Act (Tax Act) was enacted on December 22, 2017, and includes, among other items, a reduction in the federal corporate income tax rate from 35% to 21% effective January 1, 2018.    
Statutory federal corporate income tax rate     21.00%    
One-time Adjustment [Member]          
Deferred taxes benefit     $ 8,700