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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of aging of accounts receivable (Detail) - CNY (¥) ¥ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | ¥ 199,843 | ¥ 364,863
0-30 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 191,265 | 351,250
31-60 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 2,984 | 6,945
61-90 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 4,625 | 6,668
Over 90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 969 |
Current loan products |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 196,148 | 364,863
Current loan products | 0-30 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 187,575 | 351,250
Current loan products | 31-60 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 2,984 | 6,945
Current loan products | 61-90 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 4,620 | ¥ 6,668
Current loan products | Over 90 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 969 |
Other online standard loan products |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 3,695 |
Other online standard loan products | 0-30 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | 3,690 |
Other online standard loan products | 61-90 days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable | ¥ 5 |

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
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