Redeemable Convertible Preferred Shares - Additional Information (Details) $ / shares in Units, $ in Millions	Jun. 30, 2021 USD ($) shares	Sep. 10, 2015 USD ($) shares	Jan. 06, 2015 USD ($) shares	Jul. 26, 2013 USD ($) shares	Oct. 31, 2024 $ / shares shares	Oct. 31, 2023 $ / shares shares	Oct. 31, 2023 $ / shares shares	Jun. 30, 2021 $ / shares shares	Jun. 30, 2021 $ / shares shares	Sep. 10, 2015 $ / shares	Sep. 10, 2015 $ / shares	Jan. 06, 2015 $ / shares	Jan. 06, 2015 $ / shares	Jul. 26, 2013 $ / shares	Jul. 26, 2013 $ / shares
Class of Stock [Line Items]
Warrants, exercise price per share | $ / shares					$ 11.5
Warrants outstanding					8,511,968	10,411,641	10,411,641	10,242,130	10,242,130
Share exchange ratio	0.18048
Class C Second Tranche
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell	3,662,810
Redeemable convertible preferred shares at a price per share | (per share)								$ 2.632	$ 2.13192
Total aggregate proceeds | $	$ 7.8
Share warrants issued								3,662,810	3,662,810
Class A Redeemable Convertible Preferred Shares | Class A Initial Closing
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell				610,333
Redeemable convertible preferred shares at a price per share | (per share)														$ 1.63845	$ 1.5929
Total aggregate proceeds | $				$ 1.0
Class A Redeemable Convertible Preferred Shares | Class A Second Tranche
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell				1,830,999
Redeemable convertible preferred shares at a price per share | (per share)														$ 1.63845	$ 1.56967
Total aggregate proceeds | $				$ 2.9
Class B Redeemable Convertible Preferred Shares | Class B Intial Closing
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell			2,758,221
Redeemable convertible preferred shares at a price per share | (per share)												$ 2.17532	$ 1.85032
Total aggregate proceeds | $			$ 5.1
Class B Redeemable Convertible Preferred Shares | Class B Second Tranche
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell			1,838,815
Redeemable convertible preferred shares at a price per share | (per share)												2.17532	1.63419
Total aggregate proceeds | $			$ 3.0
Class B Redeemable Convertible Preferred Shares | Class B Third Tranche
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell			1,608,963
Redeemable convertible preferred shares at a price per share | (per share)												$ 2.17532	$ 1.63419
Total aggregate proceeds | $			$ 2.6
Class B-1 Redeemable Convertible Preferred Shares
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell		1,523,809
Redeemable convertible preferred shares at a price per share | (per share)										$ 2.17532	$ 1.64367
Total aggregate proceeds | $		$ 2.5
Conversion ratio										1	1
Series 1 Class C Redeemable Convertible Preferred
Class of Stock [Line Items]
Shares issued, price per share | (per share)						$ 1.63845	$ 1.5929
Series 2 Class C Redeemable Convertible Preferred
Class of Stock [Line Items]
Shares issued, price per share | (per share)						2.175315	1.85032
Series 3 Class C Redeemable Convertible Preferred
Class of Stock [Line Items]
Shares issued, price per share | (per share)						2.632	2.12376
Share warrants issued								3,662,813	3,662,813
Series 3 Class C Redeemable Convertible Preferred | Class C Inital Closing
Class of Stock [Line Items]
Initial aggregate amount that company agreed to sell	3,662,813
Redeemable convertible preferred shares at a price per share | (per share)								$ 2.632	$ 2.12376
Total aggregate proceeds | $	$ 7.8
Series 4 Class C Redeemable Convertible Preferred
Class of Stock [Line Items]
Shares issued, price per share | (per share)						$ 2.10559	$ 1.69901
Class C Warrants
Class of Stock [Line Items]
Share warrants issued								7,325,623	7,325,623
Warrants, exercise price per share | (per share)								$ 2.632	$ 2.12376
Warrants outstanding								10,242,130	10,242,130
Warrant term	10 years
Expiring term of warrants	Feb. 14, 2030
Aggregate amount of shares exchanged								16,464,646	16,464,646