Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Long-term debt as of December 31 was as follows:

Description	Due Date	2017		2016
Senior notes, San Jose Water Company:
Series A 8.58%	2022	$	20,000	20,000
Series B 7.37%	2024	30,000		30,000
Series C 9.45%	2020	10,000		10,000
Series D 7.15%	2026	15,000		15,000
Series E 6.81%	2028	15,000		15,000
Series F 7.20%	2031	20,000		20,000
Series G 5.93%	2033	20,000		20,000
Series H 5.71%	2037	20,000		20,000
Series I 5.93%	2037	20,000		20,000
Series J 6.54%	2024	10,000		10,000
Series K 6.75%	2039	20,000		20,000
Series L 5.14%	2044	50,000		50,000
SJWTX, Inc. Series A 6.27%	2036	15,000		15,000
SJW Group Series A 4.35%	2021	50,000		50,000
Total senior notes		$	315,000	315,000
444 West Santa Clara Street, L.P. 5.68% (non-recourse to SJW Land Company)	2021	—		2,717
California Pollution Control Financing Authority Revenue Bonds 5.10%, San Jose Water Company	2040	50,000		50,000
California Pollution Control Financing Authority Revenue Bonds 4.75%, San Jose Water Company	2046	70,000		70,000
Total debt		$	435,000	437,717
Less:
Unamortized debt issuance costs related to debt above		3,908		4,257
Current portion		—		125
Total long-term debt, less current portion		$	431,092	433,335