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Note 20 - Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Quarterly Financial Information [Table Text Block]

2020 Quarters (In thousands, except per share amounts)		First				Second				Third				Fourth
Operating revenue		$	218,646			$	212,384			$	216,011			$	227,333
Operating income			18,032				25,256				24,400				25,558
Net income			13,718				18,134				18,044				19,604
Basic earnings per common share			0.17				0.22				0.22				0.24
Diluted earnings per common share			0.17				0.22				0.22				0.24

2019 Quarters (In thousands, except per share amounts)		First				Second				Third				Fourth
Operating revenue		$	199,023			$	212,090			$	214,973			$	217,185
Operating income			17,733				19,944				20,034				18,787
Net income			13,546				15,190				16,587				15,748
Basic earnings per common share			0.17				0.19				0.20				0.19
Diluted earnings per common share			0.16				0.18				0.20				0.19

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- Definition

Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121640914&loc=d3e1280-108306

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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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