Retail segment contingency (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Goodwill	$ 3,499,037		$ 3,499,037		$ 3,499,037
Retail Water Revenue Percentage	37.00%	36.00%	38.00%	38.00%
Retail Water Gross Profit Percentage	52.00%	55.00%	54.00%	57.00%
Retail Segment [Member]
Goodwill	$ 3,499,037		$ 3,499,037