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Debt (Details Textual) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
Jun. 26, 2015
Jun. 30, 2018
Line of Credit Facility [Line Items]    
Line of Credit Facility, Interest Rate Description a rate per annum equal to LIBOR, 2.1% at June 30, 2018, plus 2.25%  
Payments for Early Reimbursement Against Outstanding Term Loan   $ 2.0
London Interbank Offered Rate (LIBOR) [Member]    
Line of Credit Facility [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage   2.10%
Nevada State Bank [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 15.0  
Long-term Debt [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Expiration Date   Jun. 26, 2022
Long-term Debt [Member] | Nevada State Bank [Member]    
Line of Credit Facility [Line Items]    
Long-term Line of Credit 10.0  
Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Expiration Date   Jun. 26, 2020
Revolving Credit Facility [Member] | Nevada State Bank [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Remaining Borrowing Capacity $ 5.0