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COMMON STOCK REPURCHASES AND CASH DIVIDENDS (Tables) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Dividends Declared [Table Text Block] | The following table presents the quarterly dividends declared per share of the Company’s common stock for the periods indicated:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ | ​ | 2020 |  | 2019 |  | 2018
First Quarter | ​ | $ | 0.095 | ​ | $ | 0.085 | ​ | $ | 0.080
Second Quarter | ​ | $ | 0.105 | ​ | $ | 0.085 | ​ | $ | 0.080
Third Quarter | ​ | $ | 0.110 | ​ | $ | 0.085 | ​ | $ | 0.080
Fourth Quarter | ​ | $ | 0.110 | ​ | $ | 0.095 | ​ | $ | 0.080

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- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration