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Notes Payable - Additional Information (Detail) - USD ($) |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 05, 2017 | May 20, 2016 | Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2018 | Aug. 31, 2017 | Nov. 30, 2017 | Jun. 11, 2018 | Aug. 26, 2016 | Jul. 01, 2016
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest expense |  |  | $ 410,366 | $ 314,890 | $ 995,437 | $ 937,248 |  |  |  |
Debt issuance costs |  |  | 548,085 |  | 548,085 |  |  |  |  |
Amortization of debt issuance costs |  |  | 28,337 | 30,427 | 79,876 | 96,869 |  |  |  |
Texas Capital Bank National Association [Member] | Amended And Restated Promissory Notes [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Principal paid |  |  |  |  | 4,149,667 |  | $ 2,633,000 |  |  |
Interest expense |  |  | 204,609 | 102,868 | $ 393,254 | 309,385 |  |  |  |
Texas Capital Bank National Association [Member] | Amended And Restated Promissory Notes [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, expiration date |  |  |  |  | Jun. 30, 2023 |  |  |  |  |
Second amended and restated promissory note principal amount |  |  |  |  |  |  |  | $ 15,500,000 |  |
TCB and CrowdOut Capital LLC [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Subordinated loan |  | $ 650,000 |  |  |  |  |  |  |  |
Repayment of subordinated debt | $ 650,000 |  |  |  |  |  |  |  |  |
TCB and CrowdOut Capital LLC [Member] | Subordinated Debt [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, interest rate |  | 12.00% |  |  |  |  |  |  |  |
Line of credit facility, expiration date |  | Jul. 31, 2021 |  |  |  |  |  |  |  |
Line of credit facility, description |  |  |  |  | Per a promissory note dated May 20, 2016 between the Company and CrowdOut, interest at 12% per annum on the principal sum of $650,000 is payable monthly with a maturity date of July 2021, at which time, the principal amount of $650,000 was payable. |  |  |  |  |
Line of credit facility, frequency of payment |  |  |  |  | Monthly |  |  |  |  |
Interest expense |  |  | $ 0 | $ 867 | $ 0 | $ 40,300 |  |  |  |
Interest paid | $ 867 |  |  |  |  |  |  |  |  |
Senior Credit Facilities [Member] | Texas Capital Bank National Association [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, description |  |  |  |  | Subject to the terms of the Agreement, on May 20, 2016, TCB advanced the Company $100.00. On July 1, 2016, TCB advanced the remaining principal amount of $7,999,900 per a promissory note dated May 20, 2016 between the Company and TCB, at a rate of 3.75% per annum plus LIBOR, payable monthly with a maturity date of July 2021. |  |  |  |  |
Line of credit facility, frequency of payment |  |  |  |  | Monthly |  |  |  |  |
Line of credit facility, interest rate description |  |  |  |  | 3.75% per annum plus LIBOR |  |  |  |  |
Senior Credit Facilities [Member] | Texas Capital Bank National Association [Member] | Promissory Notes [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, amount advanced |  |  |  |  |  |  |  |  |  | $ 7,999,900
Senior Credit Facilities [Member] | London Interbank Offered Rate (LIBOR) [Member] | Texas Capital Bank National Association [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Term loan, maximum borrowing capacity |  | $ 8,000,000 |  |  |  |  |  |  |  |
Line of credit facility, amount advanced |  | $ 100.00 |  |  |  |  |  |  |  |
Line of credit facility, interest rate |  | 3.75% |  |  | 3.35% |  | 3.35% |  |  |
Line of credit facility, expiration date |  | Jul. 31, 2021 |  |  |  |  |  |  |  |
Amended Senior Credit Facility [Member] | Texas Capital Bank National Association [Member] | Amended And Restated Promissory Notes [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, amount advanced |  |  |  |  |  |  |  |  | $ 2,133,433 |
Second Amended Senior Credit Facility [Member] | Texas Capital Bank National Association [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility, amount advanced |  |  |  |  |  |  |  | $ 9,000,000 |  |

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