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REVENUE (Tables) | 12 Months Ended
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Dec. 31, 2020
REVENUE |
Schedule of contract assets and contract liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ |  | 2020 |  | 2019
Contract assets | ​ | $ | 21,825 | ​ | $ | 28,529
Contract liabilities | ​ | $ | 5,121 | ​ | $ | 4,935

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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- References No definition available. + Details
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