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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Additional Information (Detail) $ in Thousands |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 26, 2022 CNY (¥) | Mar. 31, 2023 CNY (¥) RentalContract RentalUnit | Mar. 31, 2023 USD ($) RentalContract | Mar. 31, 2022 CNY (¥) RentalUnit | Mar. 31, 2022 USD ($) | Sep. 30, 2022 CNY (¥) | Mar. 31, 2023 USD ($) RentalUnit
Accumulated deficits |  | ¥ 3,601,992,000 |  |  |  | ¥ 3,558,667,000 | $ 524,492
Net Cash Provided by (Used in) Operating Activities |  | (25,478,000) | $ (3,713) | ¥ (27,545,000) |  |  |
Working capital |  | 848,038,000 |  |  |  | 597,242,000 |
Maximum amount of offering | ¥ 300,000,000 |  |  |  |  |  |
Impairment loss |  | 10,474,000 | $ 1,525 | 100,156,000 |  |  |
Property and equipment, net |  | 342,000 |  |  |  | 500,000 | $ 50
Property and equipment, accumulated depreciation |  | ¥ 2,849,000 |  |  |  | ¥ 2,691,000 |
Lease Option to Extend |  | The Group leases apartments from landlords usually for a period of five to six years which may be extended for an additional three or two years at the discretion of the landlords. | The Group leases apartments from landlords usually for a period of five to six years which may be extended for an additional three or two years at the discretion of the landlords. |  |  |  |
Fixed rent, lock in period |  | 3 years | 3 years |  |  |  |
Annual, non-compounding increase for the rest of the lease period |  | 5.00% | 5.00% |  |  |  |
Tax benefit likely of being realized up on settlement percentage |  | 0.00% |  |  |  |  | 0.00%
Significant unrecognized uncertain tax positions |  | ¥ 0 |  | 0 |  |  |
Operating lease, Right of use assets |  | 417,556,000 |  |  |  |  | $ 60,801
Operating lease liabilities |  | ¥ 417,556,000 |  |  |  |  |
Number of available rental units decreased percentage |  | 48.50% |  |  |  |  | 48.50%
Total operating costs and expenses |  | ¥ 242,357,000 | $ 35,291 | 553,262,000 |  |  |
Net loss |  | (43,325,000) | (6,309) | (243,224,000) |  |  |
Loss from operations |  | (42,687,000) | $ (6,216) | ¥ (189,048,000) |  |  |
Impairment of right-of-use lease assets |  | ¥ 0 |  |  |  |  |
Fair Value, Inputs, Level 3 [Member] | Apartment Rental Contracts [Member] |  |  |  |  |  |  |
Business combination revenue growth rate for valuation of trademarks acquired |  | 0.00% | 0.00% | 0.00% | 0.00% |  |
Business combination discount rate for valuation of trademarks acquired |  | 11.00% |  | 11.00% |  |  | 11.00%
Business combination increase of unit rental fee |  | 0.00% | 0.00% |  |  |  |
Rental Contracts [Member] |  |  |  |  |  |  |
Number of rental units contracted and available | RentalUnit |  | 28,400 |  | 55,177 |  |  | 28,400
Loss from operations |  | ¥ (42,700,000) |  | ¥ (189,000,000) |  |  |
Great Alliance Co living Limited And Affiliates [Member] |  |  |  |  |  |  |
Number of Businesses Acquired | RentalContract |  | 72,000 | 72,000 |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |
Net Cash Provided by (Used in) Operating Activities |  | ¥ 1,000 | $ 0 | ¥ (10,773,000) |  |  |
Percentage of consolidated revenues |  | 0.00% | 0.00% | 0.40% | 0.40% |  |
Percentage of consolidated assets |  | 2.00% | 2.00% |  |  | 9.00% |
Percentage of consolidated liabilities |  | 7.00% | 7.00% |  |  | 12.00% |
Net loss |  | ¥ (221,000) | $ (32) | ¥ (41,909,000) |  |  |
Shanghai Qingke E-Commerce Co., Ltd. | Variable Interest Entity |  |  |  |  |  |  |
Equity interest held |  | 100.00% | 100.00% |  |  |  |
Maximum |  |  |  |  |  |  |
Rent free period with landlords |  | 2 months | 2 months |  |  |  |
Minimum |  |  |  |  |  |  |
Rent free period with landlords |  | 1 month | 1 month |  |  |  |
Tax benefit likely of being realized up on settlement percentage |  | 50.00% |  |  |  |  | 50.00%
COVID-19 [Member] |  |  |  |  |  |  |
Operating costs and expenses decrease percentage |  | 56.20% | 56.20% |  |  |  |
Total operating costs and expenses |  | ¥ 242,400,000 | $ 35,300 | 553,300,000 | $ 87,300 |  |
Decrease in net loss percentange |  | 82.20% | 82.20% |  |  |  |
Net loss |  | ¥ 43,300,000 | $ 6,300 | ¥ 243,200,000 | $ 38,400 |  |

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