Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Revenues:
Product	$ 24,250		$ 39,486
Service	932		847
Total revenues	25,182	[1]	40,333	[1]
Cost of revenues:
Cost of product	13,078	[2]	22,450	[2]
Cost of service	328	[2]	585	[2]
Total cost of revenues	13,406		23,035
Gross profit	11,776		17,298
Operating expenses:
Product development	6,744	[2]	8,801	[2]
Sales and marketing	4,493	[2]	6,157	[2]
General and administrative	3,886	[2]	4,346	[2]
Loss Contingency, Loss in Period	3,452		0
Restructuring charges	2,522		0
Total operating expenses	21,097		19,304
Income (loss) from operations	(9,321)		(2,006)
Interest and other income (expense), net	284		(264)
Interest expense on lease financing obligations	(321)		(351)
Income (loss) before provision for income taxes	(9,358)		(2,621)
Income tax expense	37		(53)
Net income (loss)	(9,395)		(2,568)
Net loss attributable to non controlling interest	148		0
Net income (loss) attributable to Echelon Corporation Stockholders	$ (9,247)		$ (2,568)
Net income (loss) per share:
Basic	$ (0.22)		$ (0.06)
Diluted	$ (0.22)		$ (0.06)
Shares used in computing net income (loss) per share:
Basic	42,929		42,323
Diluted	42,929		42,323

[1] Includes related party amounts of $1,890 and $227 for the three months ended March 31, 2013 and 2012, respectively. See Note 12 for additional information on related par

[2] See Note 4 for summary of amounts included representing stock-based compensation expense.