Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Goodwill [Line Items]
Document Period End Date				Sep. 30, 2014
Impairment of Long-Lived Assets to be Disposed of		$ 687,000
Loss on disposal of Grid business	254,000			254,000	0
Impairment of Long-Lived Assets Held-for-use	4,409,000		0	4,409,000	0
Line of Credit Maintained				5,000,000
Number of Major Customers	2		2	2	2
Percentage of net revenue	34.30%		35.20%	36.20%	40.70%
Number of Letter of Credit	1			1
Letters of Credit Outstanding, Amount	$ 113,000			$ 113,000