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LEASES (Tables) | 12 Months Ended
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Dec. 31, 2020
LEASES |
Components of operating lease cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2020 |  | 2019
Operating lease cost | ​ | $ | 22,920 | ​ | $ | 11,052
Short-term and variable lease cost | ​ | ​ | 1,895 | ​ | ​ | 4,726
Total operating lease cost | ​ | $ | 24,815 | ​ | $ | 15,778
Schedule of maturities of operating lease liabilities | ​
​ | ​ | ​ | ​
Year Ending December 31, |  | ​ |
2021 | ​ | $ | 21,126
2022 | ​ |  | 16,177
2023 | ​ |  | 12,979
2024 | ​ |  | 11,593
2025 | ​ | ​ | 10,133
Thereafter | ​ | ​ | 74,635
Total lease payments | ​ | ​ | 146,643
Less: Interest | ​ | ​ | (34,058)
Present value of lease liabilities | ​ | $ | 112,585
Schedule of other information related to leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, | ​
​ |  | 2020 |  | 2019 | ​
Weighted average remaining lease term (in years) | ​ | ​ | 10.65 | ​ | ​ | 7.50 | ​
Weighted average discount rate | ​ | ​ | 4.63 | % | ​ | 4.05 | %
Cash paid for operating lease liabilities | ​ | $ | 21,877 | ​ | $ | 12,101 | ​
Right-of-use assets obtained in exchange for operating lease liabilities(1) | ​ | $ | 33,741 | ​ | $ | 84,551 | ​
| (1) | Included in 2019 are the right-of-use assets of $60.1 million obtained in connection with the acquisition of Artesyn in September 2019. Subsequent measurement period adjustments that occurred in the year ended December 31, 2020 reduced this amount to $54.4 million. See Note 2. Business Acquisitions for more 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=77888426&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=77888426&loc=SL77918701-209980 + Details
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