Rate Matters (Details Narrative) (USD $) In Thousands, unless otherwise specified	1 Months Ended			6 Months Ended	1 Months Ended
	Jun. 30, 2013 Middlesex	Apr. 30, 2013 Middlesex	Nov. 30, 2012 Middlesex	Jun. 30, 2013 Pinelands Water	Nov. 30, 2012 TESI N
Regulatory Liabilities [Line Items]
Description of application request seeking increase in base rates	In June 2013, the NJBPU approved a Middlesex Petition to defer approximately $0.4 million of costs of Superstorm Sandy related costs. These costs include labor, outside contractor costs, fuel, generator rental and other directly related expenses resulting from storm damage mitigation, repair, clean-up and restoration activities. Middlesex has submitted claims for these costs through its insurance carrier. Middlesex will seek recovery of any Superstorm Sandy related costs not recovered through insurance in its next base rate increase proceeding. Middlesex cannot predict the timing of or whether these costs, if any, will be recovered through insurance or in its next base rate proceeding.	In April 2013, the NJBPU approved a Middlesex petition to establish a Purchased Water Adjustment Clause and implement a tariff rate sufficient to recover increased costs of $0.1 million to purchase untreated water from the New Jersey Water Supply Authority (NJWSA) and treated water from a non-affiliated regulated water utility.	In November 2012, Middlesex filed a petition with the NJBPU seeking approval of foundational information (Foundational Filing) that would allow for the implementation of a Distribution System Improvement Charge (DSIC). A DSIC is a rate-mechanism that allows water utilities to recover investment in capital improvements to their water distribution system made between base rate proceedings. In February 2013, the Foundational Filing was approved by the NJBPU, which allows Middlesex to implement a DSIC rate in September 2013 to recover costs for qualifying projects that are placed in service in the six-month post-approval period. The DSIC rate is allowed to increase in three subsequent six month periods for any additional qualifying projects placed in service during those time periods. The maximum annual revenues allowed to be recovered under the approved Foundational Filing is $1.4 million.	NJBPU approved a combined $0.2 million increase in Pinelands Water and Pinelands Wastewater's annual base revenues. In its initial request, filed in August 2012, Pinelands had sought an increase of $0.3 million on a combined basis. The rate increase for the water service, which is approximately 50% of the approved increase, will be phased-in over one year.
Increase in base rates revenue per year				$ 200
Rate increase for the water service (percent)				50.00%
Originally filed base water rate increase				300	100
Number of customers					600
Maximum annual revenues allowed under Foundational Filing			1,400
Increased costs of purchased untreated water, recovered by tariff rate		100
Deferred costs related to hurricane	$ 400