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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares shares in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Stockholders' Equity [Abstract]
Common stock issuance, shares	1,666,666
Dividend common stock, per share amount	$ 0.155	$ 0.135
Dividend preferred stock, per share amount	$ 0.325	$ 0.325

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Dividend common stock per share amount.

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Dividend preferred stock per share amount.

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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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-Topic 505
-SubTopic 10
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