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RESTRUCTURING CHARGES (Tables) | 9 Months Ended
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Sep. 30, 2020
RESTRUCTURING CHARGES |
Summary of the activity affecting the Company's accrued contractual termination benefit liability | ​
​ | ​ | ​ | ​
​ |  | September 2020 Plan
Balance at June 30, 2020 |  | $ | —
Amounts accrued | ​ |  | 1,362
Amounts paid/incurred | ​ |  | (1,069)
Balance at September 30, 2020 |  | $ | 293

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