XML 89 R41.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Significant Accounting Policies (Asset Retirement Obligation) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Abstract]    
Retirement obligation $ 4,612 $ 4,650
Discount rate 6.00% 6.00%
Present value, recorded as a liability 1,733 1,807
Deferred tax 1,192 1,242
Regulatory asset $ 2,925 $ 3,049