Regulatory Matters (Details) (USD $)	0 Months Ended	1 Months Ended
Feb. 05, 2014 NCUC [Member] Integrity Management Rider [Member]	Aug. 31, 2013 Tennessee Regulatory Authority [Member] Actual Cost Adjustment [Member]	Feb. 28, 2014 Tennessee Regulatory Authority [Member] Amortization And Refund For Excess Deferred Taxes [Member]
Public Utilities Rate Matters Requested [Abstract]
Public Utilities Requested Rate Increase (Decrease) Amount		$ 3,700,000	$ (4,700,000)
Public Utilities Rate Matters Approved [Abstract]
Public Utilities Approved Rate Increase (Decrease) Amount	$ 800,000

Amount of public utility's requested rate increase (decrease) with regulatory agency.

No definition available.

Name:	us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration