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Equity (Tables) | 9 Months Ended
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Sep. 30, 2020
Equity [Abstract] |
Summary of entity's dividends per common share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Declared Dividends |  | Dividends Paid
​ |  | per Common Share |  | (in thousands)
2020 | ​ |  |  | ​ |  |
Q1 | ​ | $ | 0.145 | ​ | $ | 22,171
Q2 | ​ | ​ | 0.145 | ​ | ​ | 22,176
Q3 | ​ | ​ | 0.145 | ​ | ​ | 22,308
​ | ​ | ​ | ​ | ​ | ​ | ​
2019 |  | ​ |  |  | ​ |
Q1 | ​ | $ | 0.132 | ​ | $ | 17,231
Q2 | ​ |  | 0.132 | ​ |  | 17,206
Q3 | ​ |  | 0.145 | ​ |  | 22,062
Q4 | ​ |  | 0.145 | ​ |  | 22,031

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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
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration