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LEASES (Tables) | 12 Months Ended
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Dec. 31, 2021
Leases |
Summary of total lease cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended
​ | ​ | December 31,
​ |  | 2021 | ​ | 2020 | ​ | 2019
Operating lease cost | ​ | $ | 351,296 | ​ | $ | 336,156 | ​ | $ | 320,480
Short-term operating lease cost | ​ |  | 7,694 | ​ |  | 6,131 | ​ |  | 5,899
Variable operating lease cost | ​ |  | 89,065 | ​ |  | 82,868 | ​ |  | 76,027
Sublease income | ​ |  | (4,571) | ​ |  | (4,790) | ​ |  | (4,112)
Total lease cost | ​ | $ | 443,484 | ​ | $ | 420,365 | ​ | $ | 398,294
Other lease related information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year Ended
​ | ​ | December 31,
​ | ​ | 2021 | ​ | 2020
Cash paid for amounts included in the measurement of operating lease liabilities: |  | ​ |  | ​ | ​ | ​
​ | Operating cash flows from operating leases | ​ | $ | 343,749 | ​ | $ | 334,994
Right-of-use assets obtained in exchange for new operating lease liabilities | ​ | ​ | 257,830 | ​ | ​ | 322,712
Schedule of future minimum lease payments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ |  | Related Parties |  | Non-Related Parties |  | Total
2022 | ​ | $ | 4,682 | ​ | $ | 337,051 | ​ | $ | 341,733
2023 | ​ | ​ | 4,433 | ​ | ​ | 317,607 | ​ | ​ | 322,040
2024 | ​ |  | 2,686 | ​ |  | 287,770 | ​ |  | 290,456
2025 | ​ |  | 1,913 | ​ |  | 249,660 | ​ |  | 251,573
2026 | ​ |  | 1,298 | ​ |  | 212,939 | ​ |  | 214,237
Thereafter | ​ |  | 605 | ​ |  | 1,049,121 | ​ |  | 1,049,726
Total operating lease payments | ​ |  | 15,617 | ​ |  | 2,454,148 | ​ |  | 2,469,765
Less: present value discount | ​ |  | 1,150 | ​ |  | 429,026 | ​ |  | 430,176
Total operating lease liabilities | ​ |  | 14,467 | ​ |  | 2,025,122 | ​ |  | 2,039,589
Less: current portion of operating lease liabilities | ​ |  | 4,682 | ​ |  | 333,150 | ​ |  | 337,832
Operating lease liabilities, less current portion | ​ | $ | 9,785 | ​ | $ | 1,691,972 | ​ | $ | 1,701,757

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- Definition Tabular disclosure of other lease information for lessee's operating leases. + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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