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Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

Summarized quarterly financial data is as follows:

	2017 Quarter Ended
	March				June			September			December
Operating revenue	$	69,045			102,073			124,578			93,529
Operating income	10,833				30,787			38,245			18,214
SJW Group net income	3,671				18,688			19,540			17,305
Comprehensive income	3,787				18,744			19,620			17,732
Earnings per share:
—Basic	0.18				0.91			0.95			0.84
—Diluted	0.18				0.90			0.94			0.84
Market price range of stock:
—High	55.30				53.00			57.43			68.13
—Low	46.13				45.74			48.46			57.60
Dividend per share	0.22				0.22			0.22			0.38

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- References

No definition available.

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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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)-(j)
-URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306

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