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Long-Term Debt (Detail) - USD ($)
Dec. 31, 2016
Jun. 30, 2016
Debt Instrument [Line Items]    
Total debt $ 2,350,000  
Long-term Debt [Member]    
Debt Instrument [Line Items]    
Total debt $ 2,350,000 $ 4,800,000
Interest rate 1.90% 1.60%
Revolving line of credit [Member]    
Debt Instrument [Line Items]    
Outstanding $ 2,000,000 $ 2,000,000
Interest rate 1.90% 1.60%
Term loan [Member]    
Debt Instrument [Line Items]    
Outstanding $ 350,000 $ 2,800,000
Interest rate 1.80% 1.60%