Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Revenues:
Product	$ 28,056		$ 43,010		$ 107,387		$ 113,215
Service	1,008		817		2,832		2,737
Total revenues	29,064	[1]	43,827	[1]	110,219	[1]	115,952	[1]
Cost of revenues:
Cost of product	16,672	[2]	25,419	[2]	63,352	[2]	63,037	[2]
Cost of service	493	[2]	501	[2]	1,601	[2]	1,661	[2]
Total cost of revenues	17,165		25,920		64,953		64,698
Gross profit	11,899		17,907		45,266		51,254
Operating expenses:
Product development	7,256	[2]	7,533	[2]	23,450	[2]	26,005	[2]
Sales and marketing	4,807	[2]	5,885	[2]	16,512	[2]	19,183	[2]
General and administrative	3,679	[2]	3,747	[2]	11,624	[2]	13,408	[2]
Restructuring charges	0		0		1,176		0
Total operating expenses	15,742		17,165		52,762		58,596
Income (loss) from operations	(3,843)		742		(7,496)		(7,342)
Interest and other income (expense), net	(184)		390		(194)		(123)
Interest expense on lease financing obligations	(336)		(363)		(1,031)		(1,111)
Income (loss) before provision for income taxes	(4,363)		769		(8,721)		(8,576)
Income tax expense	57		114		148		229
Net income (loss)	(4,420)		655		(8,869)		(8,805)
Net loss attributable to non controlling interest	156		0		156		0
Net income (loss) attributable to Echelon Corporation Stockholders	$ (4,264)		$ 655		$ (8,713)		$ (8,805)
Net income (loss) per share:
Basic	$ (0.10)		$ 0.02		$ (0.20)		$ (0.21)
Diluted	$ (0.10)		$ 0.02		$ (0.20)		$ (0.21)
Shares used in computing net income (loss) per share:
Basic	42,806		42,232		42,564		42,040
Diluted	42,806		42,987		42,564		42,040

[1] Includes related party amounts of $1,768 and $2,001 for the three months ended September 30, 2012 and 2011, respectively, and $3,527 and $4,969 for the nine months ended September 30, 2012 and 2011, respectively. See Note 11 for additional information on related par

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