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LEASES | 12 Months Ended
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Dec. 31, 2021
LEASES |
LEASES | 16.LEASES The Group’s leases mainly related to building and the rights to use the land. The total expense related to short-term leases were insignificant for period of 2019, 2020 and 2021, and sublease income of the Group which is recognized in revenues in the consolidated statements of comprehensive income were RMB121, RMB112 and RMB134 for the years ended December 31, 2019, 2020 and 2021, respectively. The Group recognizes a negative lease expense of RMB250 and RMB88 for 2020 and 2021 under the relief as the Group elects using the variable lease expense approach. A summary of supplemental information related to operating leases in 2020 and 2021 is as follows: ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | Years Ended December 31, |
​ | ​ | 2020 |  | 2021 | ​
Lease cost: |  | ​ | ​ |  | ​
Operating fixed lease cost |  | 3,964 | ​ | 4,074 | ​
Finance lease cost | ​ | ​ | ​ | ​ | ​
— Amortization of ROU assets | ​ | 74 | ​ | 79 | ​
— Interest on lease liabilities | ​ | 90 | ​ | 96 | ​
Short term lease cost | ​ | 0 | ​ | 0 | ​
Operating variable lease cost |  | (171) | ​ | (25) | ​
Total lease cost |  | 3,957 | ​ | 4,224 | ​
​ | ​ | ​ | ​ | ​ | ​
Other information: |  |  | ​ | ​ | ​
Weighted average remaining lease term |  | ​ | ​ | ​ | ​
Operating leases | ​ | 14 years | ​ | 13 years | ​
Finance leases | ​ | 29 years | ​ | 28 years | ​
Weighted average discount rate | ​ | ​ | ​ | ​ | ​
Operating leases | ​ | 6.23 | % | 6.31 | %
Finance leases |  | 3.96 | % | 3.97 | %
​ Lease expense for all the Group’s leases (including fixed lease cost, variable lease cost and short-term lease cost) for the year ended December 31, 2019 were RMB3,104. As of December 31, 2021, the maturities of lease liabilities in accordance with ASC 842 in each of the next five years and thereafter are as follows: ​
​ | ​ | ​ | ​ | ​
Year Ending December 31, |  | Total Operating Leases |  | Total Finance Leases
2022 |  | 4,055 |  | 140
2023 |  | 4,066 | ​ | 155
2024 |  | 4,037 | ​ | 157
2025 |  | 3,871 | ​ | 157
2026 |  | 3,655 | ​ | 158
Thereafter |  | 26,035 | ​ | 3,824
​ | ​ | ​ | ​ | ​
Total minimum lease payments |  | 45,719 | ​ | 4,591
​ | ​ | ​ | ​ | ​
Less: amount representing interest |  | 14,079 | ​ | 1,866
​ | ​ | ​ | ​ | ​
Present value of minimum lease payments |  | 31,640 | ​ | 2,725
​ As of December 31, 2021, the Group has entered 32 lease contracts that the Group expects to account for as operating or finance leases, the future undiscounted lease payments for these non-cancellable lease contracts are RMB8,732, which is not reflected in the consolidated balance sheets. As of December 31, 2020, the maturities of lease liabilities in accordance with ASC 842 in each of the next five years and thereafter were as follows: ​
​ | ​ | ​ | ​ | ​
Year Ending December 31, |  | Total Operating Leases |  | Total Finance Leases
2021 |  | 3,858 | ​ | 129
2022 |  | 3,826 | ​ | 144
2023 |  | 3,733 | ​ | 146
2024 |  | 3,660 | ​ | 147
2025 |  | 3,466 | ​ | 147
Thereafter |  | 25,730 | ​ | 3,575
​ | ​ | ​ | ​ | ​
Total minimum lease payments | ​ | 44,273 | ​ | 4,288
​ | ​ | ​ | ​ | ​
Less: amount representing interest | ​ | 13,819 | ​ | 1,760
​ | ​ | ​ | ​ | ​
Present value of minimum lease payments |  | 30,454 | ​ | 2,528
​ As of December 31, 2020, the Group has entered 31 lease contracts that the Group expects to account for as operating or finance leases, the future undiscounted lease payments for these non-cancellable lease contracts are RMB8,511, which is not reflected in the consolidated balance sheets.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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