XML 36 R24.htm IDEA: XBRL DOCUMENT v3.7.0.1
Capitalization (Narrative) (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Schedule of Capitalization [Line Items]      
Issuance of shares under the DRP, shares 15,954 26,434  
Issuance of shares under the DRP $ 600 $ 800  
Other long term debt 62,000   $ 59,700
Customer advances 20,862   $ 20,846
New Jersey SRF Program [Member]      
Schedule of Capitalization [Line Items]      
Maximum borrowing amount 37,000    
Maximum borrowing capacity, construction loan 2,300    
New Jersey SRF Program [Member] | 2017 Renew Program [Member]      
Schedule of Capitalization [Line Items]      
Maximum borrowing amount $ 10,000