Shareholders' Equity (Details) - Common Shares [Member]	6 Months Ended
Jun. 30, 2019 $ / shares
Fourth Quarter 2018 [Member]
Dividends Declared or Paid
Record date	Dec. 31, 2018
Payment date	Jan. 15, 2019
Common share, dividend per share, cash paid	$ 0.40
First Quarter 2019 [Member]
Dividends Declared or Paid
Record date	Mar. 29, 2019
Payment date	Apr. 15, 2019
Common share, dividend per share, declared	$ 0.40
Second Quarter 2019 [Member]
Dividends Declared or Paid
Record date	Jun. 28, 2019
Payment date	Jul. 15, 2019
Common share, dividend per share, declared	$ 0.40

Aggregate dividends paid during the period for each share of common stock outstanding.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
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