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LEASES (Tables) | 3 Months Ended
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Mar. 31, 2021
Leases |
Summary of total lease cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended
​ | ​ | March 31,
​ |  | 2021 | ​ | 2020
Operating lease cost | ​ | $ | 87,219 | ​ | $ | 83,195
Short-term operating lease cost | ​ |  | 1,933 | ​ |  | 1,784
Variable operating lease cost | ​ |  | 21,944 | ​ |  | 20,333
Sublease income | ​ |  | (1,198) | ​ |  | (1,175)
Total lease cost | ​ | $ | 109,898 | ​ | $ | 104,137
Other lease related information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Three Months Ended
​ | ​ | March 31,
​ | ​ | 2021 | ​ | 2020
Cash paid for amounts included in the measurement of operating lease liabilities: |  | ​ |  | ​ | ​ | ​
​ | Operating cash flows from operating leases | ​ | $ | 84,415 | ​ | $ | 82,607
Right-of-use assets obtained in exchange for new operating lease liabilities | ​ | ​ | 110,567 | ​ | ​ | 71,131

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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=121609121&loc=SL77918686-209980 + Details
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- References No definition available. + Details
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