Regulatory Rate Filings (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	May 23, 2014	Oct. 03, 2013	Jan. 03, 2012	Jul. 11, 2014 Subsequent Event [Member]
Regulatory Rate [Line Items]
Requested rate increase, authorized revenue, year one				$ 47,394
Requested rate increase, authorized revenue, year one percent				21.51%
Requested rate increase, authorized revenue, year two				12,963
Requested rate increase, authorized revenue, year two percent				4.87%
Requested rate increase, authorized revenue, year three				34,797
Requested rate increase, authorized revenue, year three percent				12.59%
Proposed Rate Increase, Authorized Revenue, Year One					22,063
Proposed Rate Increase, Percent of Authorized Revenue, Year One					9.79%
Proposed Rate Increase, Authorized Revenue, Year Two					11,579
Proposed Rate Increase, Percent of Authorized Revenue, Year Two					4.72%
Proposed Rate Increase, Authorized Revenue, Year Three					15,356
Proposed Rate Increase, Percent of Authorized Revenue, Year Three					6.02%
Water Reduction Target Goal, Percentage	20.00%
Increase requested percent of authorized revenue		3.60%	23.10%
Requested rate increase, authorized revenue		$ 9,400	$ 2,400