Quarterly report pursuant to Section 13 or 15(d)

Long-Term Investments (Details)

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Long-Term Investments (Details)
3 Months Ended
Sep. 30, 2018
USD ($)
investment
Sep. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Equity Method Investments and Cost Method Investments [Abstract]      
Number of investments | investment 2    
Equity method investment $ 8,136,000   $ 7,888,000
Cost method investment 500,000   500,000
Equity and cost method investment $ 8,636,000   $ 8,388,000
Ownership percentage, equity method investment 20.60%    
Income (loss) from equity method investment $ 248,000 $ 57,000  
Ownership percentage, cost method investment 2.50%   2.50%