Condensed Consolidated Statements of Operations (Unaudited) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Revenues:
Product	$ 9,164,000		$ 10,161,000		$ 29,035,000		$ 33,269,000
Service	14,000		16,000		48,000		70,000
Total revenues	9,178,000	[1]	10,177,000	[1]	29,083,000	[1]	33,339,000	[1]
Cost of revenues:
Cost of product	3,877,000	[2]	3,711,000	[2]	11,586,000	[2]	12,742,000	[2]
Cost of service	303,000	[2]	84,000	[2]	916,000	[2]	345,000	[2]
Total cost of revenues	4,180,000		3,795,000		12,502,000		13,087,000
Gross profit	4,998,000		6,382,000		16,581,000		20,252,000
Operating expenses:
Product development	2,305,000	[2]	2,711,000	[2]	7,224,000	[2]	8,092,000	[2]
Sales and marketing	2,160,000	[2]	2,232,000	[2]	6,600,000	[2]	6,931,000	[2]
General and administrative	3,538,000	[2]	3,925,000	[2]	10,887,000	[2]	11,045,000	[2]
Goodwill, Impairment Loss					3,388,000		0
Impairment of Long-Lived Assets Held-for-use	4,409,000		0		4,409,000		0
Litigation Charges	0		0		0		3,452,000
Restructuring charges	227,000		0		227,000
Total operating expenses	12,639,000		8,868,000		29,347,000		31,774,000
Loss from operations	(7,641,000)		(2,486,000)		(12,766,000)		(11,522,000)
Interest and other income, net	719,000		(606,000)		661,000		(486,000)
Interest expense on lease financing obligations	(271,000)		(305,000)		(839,000)		(938,000)
Loss before provision for income taxes	(7,193,000)		(3,397,000)		(12,944,000)		(12,946,000)
Income Tax Expense (Benefit)	33,000		113,000		114,000		256,000
Net loss from continuing operations attributable to Echelon Corporation Stockholders	(7,226,000)		(3,510,000)		(13,058,000)		(13,202,000)
Assets Held and Used, Long Lived, Fair Value Disclosure	0				0
Net loss	(9,367,000)		(3,779,000)		(22,308,000)		(14,177,000)
Net loss from discontinued operations, net of income taxes	(2,141,000)		(269,000)		(9,250,000)		(975,000)
Net loss attributable to noncontrolling interest	(179,000)		266,000		535,000		590,000
Net loss from discontinued operations attributable to non-controlling interest, net of income taxes	(179,000)		(266,000)		(535,000)		(590,000)
Net loss from discontinued operations attributable to Echelon Corporation Stockholders, net of income taxes	(1,962,000)		(3,000)		(8,715,000)		(385,000)
Net loss attributable to Echelon Corporation Stockholders	$ (9,188,000)		$ (3,513,000)		$ (21,773,000)		$ (13,587,000)
Basic and diluted net loss per share from continuing operations attributable to Echelon Corporation Stockholders	$ (0.17)		$ (0.08)		$ (0.30)		$ (0.31)
Basic and diluted net loss per share from discontinued operations attributable to Echelon Corporation Stockholders	$ (0.05)		$ 0.00		$ (0.20)		$ (0.01)
Basic and diluted net loss attributable to Echelon Corporation Stockholders	$ (0.21)		$ (0.08)		$ (0.50)		$ (0.32)
Shares used in computing net loss per share:
Basic	43,507		43,184		43,367		43,039
Diluted	43,507		43,184		43,367		43,039

[1] Includes related party amounts of $683 and $499 for the three months ended September 30, 2014 and 2013, respectively; and related party amounts of $2,546 and $4,200 for the nine months ended September 30, 2014 and 2013, respectively. See Note 5 and Note 12 for additional information on related par

[2] See Note 6 for summary of amounts included representing stock-based compensation expense.