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Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Jun. 30, 2018
Mar. 31, 2017
Income Tax Disclosure [Abstract]            
Income tax expense (benefit) $ (226,000) $ 0 $ (226,000) $ (296,000)    
Federal tax expense (benefit) (189,000) 0 (189,000) (296,000)    
State tax expense (benefit) (37,000) $ 0 (37,000) $ 0    
Deferred income tax valuation allowance 8,113,000   8,113,000      
Net long-term deferred income tax asset or liability 0   0      
Net operating loss carry-forward $ 14,900,000   $ 14,900,000      
Net operating loss carryforward expiration year     2023 through fiscal 2038      
Discrete net tax benefit         $ 0  
Federal tax rate percentage     21.00%      
Net tax benefit due to valuation allowance position     $ 0      
Provisional estimate     $ 0      
Federal alternative minimum tax, tax credits         305,000 $ 296,000
Additional income tax expense benefit         $ 40,000  
Tax Cuts and Jobs Act, Accounting Complete     true