Organizational Review	12 Months Ended
	Dec. 31, 2012
Notes To Financial Statements [Abstract]
Organizational Review	NOTE 5:  2010 ORGANIZATIONAL REVIEWAs part of a broader organizational review to improve operating efficiencies, in 2010 Connecticut Water determined that a targeted reduction in workforce was appropriate.  During the third quarter of 2010, Connecticut Water terminated the employment of approximately 15 full time employees.  As a result of this action, Connecticut Water paid approximately $583,000 representing termination benefits, including severance payments and payments for accrued vacation.  All severance agreements were signed by the effected employees.  In addition to costs associated with severance, Connecticut Water also incurred approximately $122,000 related to employee benefits, including extension of medical benefits and the accelerated vesting of certain share based compensation and $81,000 related to outsourcing and legal fees.  Costs associated with this organizational review appear on the line “Organizational Review Charge” on the Consolidated Statements of Income and are considered part of Water Activities segment.  As of December 31, 2010, all payments related to the organizational review had been made.