Stock Dividend (Details Narrative)	0 Months Ended
Apr. 20, 2011
Stock Dividend Details Narrative
Common stock dividends, shares	One share of common stock for each two shares held

Description of the number of shares of common stock distributed as a dividend.

No definition available.

Name:	CNIG_CommonStockDividendsShareBasis
Namespace Prefix:	CNIG_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration