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Revolving Credit Facility (Details) - USD ($)
 1 Months Ended 6 Months Ended
Nov. 16, 2016
Sep. 27, 2016
Jan. 31, 2021
Revolving Credit Facility (Details) [Line Items]      
Line of credit maturity date   Sep. 26, 2022  
Loan and security agreement with Western Alliance Bank for revolving credit facility $ 5,000,000 $ 2,500,000  
Line of credit facility annual fee   $ 10,000  
Foreign exchange, description     In December 2016, the applicable foreign exchange reserve percentage was changed so that the reduction of available borrowing for major currency forward contracts of less than six months tenor is set at 10% of the nominal amount of the foreign exchange contracts, and for contracts over six months tenor, 12.5% of the nominal amount of the foreign exchange contracts.
Outstanding foreign exchange amount     $ 1,580,000
Available borrowing reduction     $ 157,500
Revolving Credit Facility [Member]      
Revolving Credit Facility (Details) [Line Items]      
Line of credit facility, borrowing capacity, description     At the Company’s request in September 2020, advances under this facility have been reduced to the lesser of $2.0 million or 80% of the Company’s eligible accounts receivable, subject to certain concentration limits.
Interest rate, description     the outstanding principal amount bears interest per annum at the greater of 3.5% or the prime rate plus 1.25%. Previously the interest rate was capped at 5.0%. Interest is payable monthly and all outstanding principal and any accrued and unpaid interest is due on the maturity date of September 26, 2022.
Foreign Exchange Contract [Member]      
Revolving Credit Facility (Details) [Line Items]      
Line of credit facility, borrowing capacity, description the Company entered into a Foreign Exchange Agreement with Western Alliance Bank to allow the Company to enter into foreign exchange contracts not to exceed $5.0 million in the aggregate at any point in time under its revolving credit facility. This limit was raised to approximately $6.5 million pursuant to the Loan and Security Modification Agreement dated May 30, 2018. The available borrowing under the revolving credit facility is reduced by an applicable foreign exchange reserve percentage as determined by Western Alliance Bank, in its reasonable discretion from time to time, which was initially set at 10% of the nominal amount of the foreign exchange contracts in effect at the relevant time.