Subsequent Events (Details) $ / shares in Units, $ in Thousands | Nov. 04, 2021USD ($)$ / sharesshares | Sep. 15, 2021USD ($)$ / sharesshares | Jun. 18, 2021USD ($)shares | Aug. 10, 2020USD ($)shares | Sep. 30, 2021USD ($)shares | Sep. 30, 2020USD ($) | May 05, 2021$ / shares |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of stock, net of offering costs | $ | | | $ 21,100 | $ 32,900 | | | |
Issuance of stock (in shares) | | | 5,411,900 | 4,000,000 | | | |
Number of warrants | | | | | 130,350 | | |
Warrant exercise price (in dollars per share) | $ / shares | | | | | | | $ 0.01 |
Public Offering [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of stock, net of offering costs | $ | | | | | $ 21,144 | $ 32,867 | |
Purchase Agreement With RJB Partners LLC And Matthew Salzberg [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Standstill Agreement, Term | | 3 years | | | | | |
Percentage of voting power | | 19.90% | | | | | |
Warrant term | | 7 years | | | | | |
Maximum available to repay debt | $ | | $ 5,000 | | | | | |
Purchase Agreement With RJB Partners LLC And Matthew Salzberg [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of common stock, gross | $ | | $ 78,000 | | | | | |
Private Offering, Rights Offering [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Share Price | $ / shares | | $ 1.8505 | | | | | |
Applicable fraction | | 0.185055707113895 | | | | | |
Share price multiplier | $ / shares | | $ 10 | | | | | |
Private Offering, Rights Offering [Member] | Warrants At Exercise Price Of 15 Dollars Per Share [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 15 | | | | | |
Portion of share for each subscription right | | 80.00% | | | | | |
Private Offering, Rights Offering [Member] | Warrants At Exercise Price Of 18 Dollars Per Share [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 18 | | | | | |
Portion of share for each subscription right | | 40.00% | | | | | |
Private Offering, Rights Offering [Member] | Warrants At Exercise Price Of 20 Dollars Per Share [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 20 | | | | | |
Portion of share for each subscription right | | 20.00% | | | | | |
Private Offering, Backstop [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of common stock, gross | $ | | $ 45,000 | | | | | |
Private Placement [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of stock, net of offering costs | $ | | | | | $ 2,799 | | |
Private Placement [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of common stock, gross | $ | | 33,000 | | | | | |
Private Offering, Salzberg Private Placement [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of common stock, gross | $ | | $ 3,000 | | | | | |
Private Offering, Salzberg Private Placement [Member] | Warrants At Exercise Price Of 15 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | | 240,000 | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 15 | | | | | |
Private Offering, Salzberg Private Placement [Member] | Warrants At Exercise Price Of 18 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | | 120,000 | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 18 | | | | | |
Private Offering, Salzberg Private Placement [Member] | Warrants At Exercise Price Of 20 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | | 60,000 | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 20 | | | | | |
Private Offering, Salzberg Private Placement [Member] | Class A | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of stock, net of offering costs | $ | | $ 2,800 | | | | | |
Issuance of stock (in shares) | | 300,000 | | | | | |
Private Offering, Concurrent [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of common stock, gross | $ | | $ 30,000 | | | | | |
Private Offering, Concurrent [Member] | Warrants At Exercise Price Of 15 Dollars Per Share [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | | 2,400,000 | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 15 | | | | | |
Private Offering, Concurrent [Member] | Warrants At Exercise Price Of 18 Dollars Per Share [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | | 1,200,000 | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 18 | | | | | |
Private Offering, Concurrent [Member] | Warrants At Exercise Price Of 20 Dollars Per Share [Member] | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | | 600,000 | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | | $ 20 | | | | | |
Private Offering, Concurrent [Member] | Class A | Scenario, Plan [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Issuance of stock (in shares) | | 3,000,000 | | | | | |
Subsequent Event | Purchase Agreement With RJB Partners LLC And Matthew Salzberg [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Minimum Wage Per Hour | 15 | | | | | | |
Special meeting, percentage voting power necessary to call | 25.00% | | | | | | |
Voting power no longer needed to remove Director or change bylaws | 66.70% | | | | | | |
Subsequent Event | Private Offering, Rights Offering [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Issuance of stock (in shares) | 6,671,271 | | | | | | |
Subsequent Event | Private Offering, Rights Offering [Member] | Warrants At Exercise Price Of 15 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | 987,645.417802738 | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | $ 15 | | | | | | |
Subsequent Event | Private Offering, Rights Offering [Member] | Warrants At Exercise Price Of 18 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | 493,822.7089013690 | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | $ 18 | | | | | | |
Subsequent Event | Private Offering, Rights Offering [Member] | Warrants At Exercise Price Of 20 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | 246,911.3544506840 | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | $ 20 | | | | | | |
Subsequent Event | Private Offering, Rights Offering [Member] | Class A | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Issuance of stock (in shares) | 1,234,187 | | | | | | |
Subsequent Event | Private Offering, Backstop [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Proceeds from issuance of common stock, gross | $ | $ 32,700 | | | | | | |
Subsequent Event | Private Offering, Backstop [Member] | Warrants At Exercise Price Of 15 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | 2,612,354.58219726 | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | $ 15 | | | | | | |
Subsequent Event | Private Offering, Backstop [Member] | Warrants At Exercise Price Of 18 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | 1,306,177.291098630 | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | $ 18 | | | | | | |
Subsequent Event | Private Offering, Backstop [Member] | Warrants At Exercise Price Of 20 Dollars Per Share [Member] | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Number of warrants | 653,088.645549316 | | | | | | |
Warrant exercise price (in dollars per share) | $ / shares | $ 20 | | | | | | |
Subsequent Event | Private Offering, Backstop [Member] | Class A | | | | | | | |
Subsequent Event [Line Items] | | | | | | | |
Issuance of stock (in shares) | 3,265,813 | | | | | | |