Unaudited Quarterly Financial Data

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Financial Data

Unaudited Quarterly Financial Data

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

	2016 Quarter Ended
	March		June	September	December
Operating revenue	$	61,112	86,944	112,344	79,306
Operating income	10,581		29,800	36,346	16,389
SJW Group net income	3,378		16,775	18,959	13,727
Comprehensive income	3,908		15,520	18,790	13,834
Earnings per share:
—Basic	0.17		0.82	0.93	0.67
—Diluted	0.16		0.82	0.92	0.67
Market price range of stock:
—High	37.50		39.38	46.66	56.69
—Low	29.35		32.66	38.13	42.19
Dividend per share	0.20		0.20	0.20	0.20