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Consolidated Statement of Changes in Stockholders' Equity (Parentheticals) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Common Stock [Member]
Common stock, offering cost		$ 760
Retained Earnings [Member]
Cash dividends per share (in dollars per share)	$ 1.17	$ 1.08
Cash dividends per share (in dollars per share)	$ 1.17	$ 1.08

X

- Definition

Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

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

+ References

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