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Subsequent Events (Details) - USD ($)
6 Months Ended
Feb. 01, 2019
Dec. 31, 2018
Dec. 31, 2017
Jan. 31, 2019
Nov. 27, 2017
Mar. 30, 2016
Subsequent Event [Line Items]            
Repayment of term loan   $ 1,000,000 $ 1,000,000      
Stock repurchase program authorized amount         $ 5,000,000  
Subsequent Event            
Subsequent Event [Line Items]            
Stock repurchase program authorized amount $ 15,000,000     $ 5,000,000    
March 2016 Term Loan | Secured Debt            
Subsequent Event [Line Items]            
Maximum capacity on draw           $ 10,000,000
March 2016 Term Loan | Secured Debt | Subsequent Event            
Subsequent Event [Line Items]            
Repayment of term loan 2,000,000          
March 2016 Revolving Loan | Revolving Credit Facility            
Subsequent Event [Line Items]            
Maximum capacity on draw           $ 2,000,000
March 2016 Revolving Loan | Revolving Credit Facility | Subsequent Event            
Subsequent Event [Line Items]            
Maximum capacity on draw $ 5,000,000.0     $ 2,000,000.0