Subsequent Events (Notes)	3 Months Ended
Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Initial Notes of the February 28, 2019 Note Purchase Agreement On January 4, 2019, Sonic Foundry, Inc. and Burish entered into a Promissory Note (the "Promissory Note") pursuant to which Burish purchased a 9.25% Unsecured Promissory Note for $1,000,000 in cash. Interest accrued and outstanding principal on the Promissory Note is due and payable on January 4, 2020. The Promissory Note may be prepaid at any time without penalty. The Promissory Note was later included in the Note Purchase Agreement, dated February 28, 2019, as detailed below. On January 31, 2019, Sonic Foundry, Inc. and Burish entered into a Promissory Note (the "January 31, 2019 Promissory Note") pursuant to which the director purchased a 9.25% Unsecured Promissory Note for $1,000,000 in cash. Interest accrued and outstanding principal on the January 31, 2019 Promissory Note is due and payable on January 31, 2020. The January 31, 2019 Promissory Note may be prepaid any time without penalty. The note may be paid by the Company by issuing common stock to the director, with each share valued at $1.30 per share. The January 31, 2019 Promissory Note was later included in the Note Purchase Agreement, dated February 28, 2019, as detailed below. On February 14, 2019, Sonic Foundry, Inc. and Burish entered into a Promissory Note (the "February 14, 2019 Promissory Note") pursuant to which Burish purchased a 9.25% Unsecured Promissory Note for $1,000,000 in cash. Interest accrued and outstanding principal on the February 14, 2019 Promissory Note is due and payable on February 14, 2020. The February 14, 2019 Promissory Note may be prepaid any time without penalty. The note may be paid by the Company by issuing common stock to Burish with each share valued at $1.30 per share. The February 14, 2019 Promissory Note was later included in the Note Purchase Agreement, dated February 28, 2019, as detailed below. February 28, 2019 Note Purchase Agreement On February 28, 2019, a Special Committee of Independent and Disinterested Directors ("Disinterested Directors") unanimously authorized us to enter into a Note Purchase Agreement (the "Note Purchase Agreement") with Burish. Following extended negotiations with an independent third party for a similar financing ("Independent Third-Party Financing") that was not consummated, the Disinterested Directors engaged in extensive deliberations and negotiations with its Chairman for an alternative financing. The Disinterested Directors approved the alternative financing on terms and conditions as set forth in the Note Purchase Agreement, which it believes is fair and superior to the Independent Third-Party Financing, and is in the best interest of the Company and its stockholders. The Note Purchase Agreement provides for subordinated secured promissory notes (the "Subordinated Promissory Notes") in an aggregate original principal amount of up to $5,000,000. Mr. Burish will acquire from the Company (a) on the initial closing date, the notes in an aggregate principal amount of $3,000,000 (the "Initial Notes") and (b) two additional tranches, each in the amount of $1,000,000 and payable at any time prior to the first anniversary of the Agreement (the "Additional Notes" and together with the Initial Notes, collectively, the "Purchase Price"). The Initial Notes were previously disbursed in January and February of 2019 as detailed above (the "Promissory Note, the January 31st, 2019 Promissory Note, and the February 14, 2019 Promissory Note, collectively referred to as the "Initial Notes"). The fourth tranche of $1,000,000 was disbursed on March 13, 2019 and the fifth and final tranche of $1,000,000 was disbursed on April 4, 2019. The Subordinated Promissory Notes accrue interest at the variable per annum rate equal to the Prime Rate (as defined) plus four percent (4.00%). The outstanding principal balance of the Subordinated Promissory Notes, plus all unpaid accrued interest, plus all outstanding and unpaid obligations, shall be due and payable on February 28, 2024 (the "Maturity Date"). Principal installments of $100,000 are payable on the last day of each month end beginning with the month ending August 31, 2020, and continuing through the Maturity Date. The principal of the Subordinated Promissory Notes may be prepaid at any time in whole or in part, by payment of an amount equal to the unpaid principal balance to be pre-paid, plus all unpaid interest accrued thereon through the prepayment date, plus all outstanding and unpaid fees and expenses payable through the prepayment date. At each anniversary of the Closing, an administration fee will be payable to Mr. Burish equal to 0.5% of the purchase price less principal payments made. The Subordinated Promissory Notes are collateralized by substantially all the Company's assets, including intellectual property, subject to the rights of Partners for Growth V, L.P., which shall be senior to these Subordinated Promissory Notes. The Note Purchase Agreement requires compliance with the following financial covenants: (i) Minimum Coverage Ratio, as of the last day of each month on or after the closing date, to be equal to or greater than (x) 0.7:1.00 for the December through May calendar months, (y) 0.9:1.00 for the June through November calendar months; (ii) Minimum Qualifying Revenue (as defined), as of the last day of any calendar month, on or after December 1, 2018, on a trailing twelve-month basis, to be greater than $13,000,000. The Note Purchase Agreement dated February 28, 2019 is subordinated to the existing PFG loan. The Company used the proceeds from the notes issued under the Note Purchase Agreement to replace the revolving line of credit with Silicon Valley Bank, which matured on January 31, 2019. February 28, 2019 Warrant Coincident with execution of the Note Purchase Agreement, the Company entered into a Warrant Agreement ("Warrant") with Mr. Burish. Pursuant to the terms of the Warrant, the Company issued to Mr. Burish a warrant to purchase up to 728,155 shares of common stock of the Company at an exercise price of $1.18 per share, subject to certain adjustments. On April 25, 2019, Mr. Burish exercised his warrant to purchase 728,155 shares of common stock of the Company at an exercise price of $1.18 per share. Partners for Growth V, L.P. On March 11, 2019, Sonic Foundry, Inc. entered into a Consent, Waiver & Modification to the Loan and Security Agreement dated May 11, 2018 (the "Modification") with Partners for Growth V, L.P. ("PFG"). Under the Modification: PFG waived the Company's default on the Minimum EBITDA financial covenant for the quarterly reporting period ending December 31, 2018; and modified the existing financial covenants as follows: (i) Minimum Coverage Ratio, as of the last day of each month on or after the closing date, equal to or greater than (x) 0.7: 1.00 for the December through May calendar months, (y) 0.9:1.00 for the June through November calendar months; (ii) Minimum Qualifying Revenue (as defined), as of the last day of any calendar month, on or after December 1, 2018, on a trailing twelve-month basis, to be greater than $13,000,000; and modifies the negative covenants to be as follows: (x) shall not cause or permit (a) Japanese subsidiary indebtedness under its revolving line of credit facility to exceed at any time $1,000,000 outstanding, or (b) aggregate subsidiary indebtedness to exceed $1,200,000 at any time. Under the Modification, the Company is required to draw the next tranche of $1,000,000 in proceeds on the Note Purchase Agreement (detailed above) on or before March 31, 2019 as well as the final tranche of $1,000,000 in proceeds on or before April 30, 2019. The Modification acknowledges that Silicon Valley Bank, the named "Senior Lender" in the May 11, 2018 Loan Agreement has been repaid and the related senior loan documents terminated. The existing terms of the PFG loan in terms of amortization, interest rate, payment schedule and maturity date were unchanged.

Subsequent Events

Initial Notes of the February 28, 2019 Note Purchase Agreement

On January 4, 2019, Sonic Foundry, Inc. and Burish entered into a Promissory Note (the "Promissory Note") pursuant to which Burish purchased a 9.25% Unsecured Promissory Note for $1,000,000 in cash.

Interest accrued and outstanding principal on the Promissory Note is due and payable on January 4, 2020.

The Promissory Note may be prepaid at any time without penalty.

The Promissory Note was later included in the Note Purchase Agreement, dated February 28, 2019, as detailed below.

On January 31, 2019, Sonic Foundry, Inc. and Burish entered into a Promissory Note (the "January 31, 2019 Promissory Note") pursuant to which the director purchased a 9.25% Unsecured Promissory Note for $1,000,000 in cash.

Interest accrued and outstanding principal on the January 31, 2019 Promissory Note is due and payable on January 31, 2020.

The January 31, 2019 Promissory Note may be prepaid any time without penalty. The note may be paid by the Company by issuing common stock to the director, with each share valued at $1.30 per share.

The January 31, 2019 Promissory Note was later included in the Note Purchase Agreement, dated February 28, 2019, as detailed below.

On February 14, 2019, Sonic Foundry, Inc. and Burish entered into a Promissory Note (the "February 14, 2019 Promissory Note") pursuant to which Burish purchased a 9.25% Unsecured Promissory Note for $1,000,000 in cash.

Interest accrued and outstanding principal on the February 14, 2019 Promissory Note is due and payable on February 14, 2020.

The February 14, 2019 Promissory Note may be prepaid any time without penalty. The note may be paid by the Company by issuing common stock to Burish with each share valued at $1.30 per share.

The February 14, 2019 Promissory Note was later included in the Note Purchase Agreement, dated February 28, 2019, as detailed below.

February 28, 2019 Note Purchase Agreement

On February 28, 2019, a Special Committee of Independent and Disinterested Directors ("Disinterested Directors") unanimously authorized us to enter into a Note Purchase Agreement (the "Note Purchase Agreement") with Burish. Following extended negotiations with an independent third party for a similar financing ("Independent Third-Party Financing") that was not consummated, the Disinterested Directors engaged in extensive deliberations and negotiations with its Chairman for an alternative financing. The Disinterested Directors approved the alternative financing on terms and conditions as set forth in the Note Purchase Agreement, which it believes is fair and superior to the Independent Third-Party Financing, and is in the best interest of the Company and its stockholders.

The Note Purchase Agreement provides for subordinated secured promissory notes (the "Subordinated Promissory Notes") in an aggregate original principal amount of up to $5,000,000. Mr. Burish will acquire from the Company (a) on the initial closing date, the notes in an aggregate principal amount of $3,000,000 (the "Initial Notes") and (b) two additional tranches, each in the amount of $1,000,000 and payable at any time prior to the first anniversary of the Agreement (the "Additional Notes" and together with the Initial Notes, collectively, the "Purchase Price"). The Initial Notes were previously disbursed in January and February of 2019 as detailed above (the "Promissory Note, the January 31st, 2019 Promissory Note, and the February 14, 2019 Promissory Note, collectively referred to as the "Initial Notes").

The fourth tranche of $1,000,000 was disbursed on March 13, 2019 and the fifth and final tranche of $1,000,000 was disbursed on April 4, 2019.

The Subordinated Promissory Notes accrue interest at the variable per annum rate equal to the Prime Rate (as defined) plus four percent (4.00%). The outstanding principal balance of the Subordinated Promissory Notes, plus all unpaid accrued interest, plus all outstanding and unpaid obligations, shall be due and payable on February 28, 2024 (the "Maturity Date"). Principal installments of $100,000 are payable on the last day of each month end beginning with the month ending August 31, 2020, and continuing through the Maturity Date.

The principal of the Subordinated Promissory Notes may be prepaid at any time in whole or in part, by payment of an amount equal to the unpaid principal balance to be pre-paid, plus all unpaid interest accrued thereon through the prepayment date, plus all outstanding and unpaid fees and expenses payable through the prepayment date.

At each anniversary of the Closing, an administration fee will be payable to Mr. Burish equal to 0.5% of the purchase price less principal payments made.

The Subordinated Promissory Notes are collateralized by substantially all the Company's assets, including intellectual property, subject to the rights of Partners for Growth V, L.P., which shall be senior to these Subordinated Promissory Notes.

The Note Purchase Agreement requires compliance with the following financial covenants: (i) Minimum Coverage Ratio, as of the last day of each month on or after the closing date, to be equal to or greater than (x) 0.7:1.00 for the December through May calendar months, (y) 0.9:1.00 for the June through November calendar months; (ii) Minimum Qualifying Revenue (as defined), as of the last day of any calendar month, on or after December 1, 2018, on a trailing twelve-month basis, to be greater than $13,000,000.

The Note Purchase Agreement dated February 28, 2019 is subordinated to the existing PFG loan.

The Company used the proceeds from the notes issued under the Note Purchase Agreement to replace the revolving line of credit with Silicon Valley Bank, which matured on January 31, 2019.

February 28, 2019 Warrant

Coincident with execution of the Note Purchase Agreement, the Company entered into a Warrant Agreement ("Warrant") with Mr. Burish. Pursuant to the terms of the Warrant, the Company issued to Mr. Burish a warrant to purchase up to 728,155 shares of common stock of the Company at an exercise price of $1.18 per share, subject to certain adjustments.

On April 25, 2019, Mr. Burish exercised his warrant to purchase 728,155 shares of common stock of the Company at an exercise price of $1.18 per share.

Partners for Growth V, L.P.

On March 11, 2019, Sonic Foundry, Inc. entered into a Consent, Waiver & Modification to the Loan and Security Agreement dated May 11, 2018 (the "Modification") with Partners for Growth V, L.P. ("PFG"). Under the Modification: PFG waived the Company's default on the Minimum EBITDA financial covenant for the quarterly reporting period ending December 31, 2018; and modified the existing financial covenants as follows: (i) Minimum Coverage Ratio, as of the last day of each month on or after the closing date, equal to or greater than (x) 0.7: 1.00 for the December through May calendar months, (y) 0.9:1.00 for the June through November calendar months; (ii) Minimum Qualifying Revenue (as defined), as of the last day of any calendar month, on or after December 1, 2018, on a trailing twelve-month basis, to be greater than $13,000,000; and modifies the negative covenants to be as follows: (x) shall not cause or permit (a) Japanese subsidiary indebtedness under its revolving line of credit facility to exceed at any time $1,000,000 outstanding, or (b) aggregate subsidiary indebtedness to exceed $1,200,000 at any time.

Under the Modification, the Company is required to draw the next tranche of $1,000,000 in proceeds on the Note Purchase Agreement (detailed above) on or before March 31, 2019 as well as the final tranche of $1,000,000 in proceeds on or before April 30, 2019.

The Modification acknowledges that Silicon Valley Bank, the named "Senior Lender" in the May 11, 2018 Loan Agreement has been repaid and the related senior loan documents terminated.

The existing terms of the PFG loan in terms of amortization, interest rate, payment schedule and maturity date were unchanged.