Acquisitions (Details 3) (Eagle Pure Water Systems, Inc., USD $)	0 Months Ended
	Dec. 31, 2012 item
Acquisitions
Revenues generated by acquiree in latest fiscal year before the business acquisition	$ 500,000
Consideration for the transaction	870,000
Net Assets
Current assets	8,000
Property, plant and equipment	70,000
Current liabilities	(5,000)
Net assets acquired	273,000
Amortizable intangible assets, useful life	3 years
Number of in-process research and development projects acquired	0
Goodwill deductible for income tax purposes	597,000
Customer relationships
Net Assets
Amortizable intangible assets	150,000
Amortizable intangible assets, useful life	3 years
Brand name
Net Assets
Amortizable intangible assets	18,000
Amortizable intangible assets, useful life	3 years
Non-compete agreement
Net Assets
Amortizable intangible assets	$ 32,000
Amortizable intangible assets, useful life	5 years