Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 13,670		$ 18,876
Short-term investments	42,988		42,979
Accounts receivable, net	15,185	[1]	15,725	[1]
Inventories	8,042		11,729
Deferred cost of goods sold	1,730		846
Other current assets	2,101		2,662
Total current assets	83,716		92,817
Property and equipment, net	19,415		21,777
Goodwill	8,343		8,276
Other long-term assets	782		713
Total assets	112,256		123,583
CURRENT LIABILITIES:
Accounts payable	6,153		8,551
Accrued liabilities	6,574		4,637
Current portion of lease financing obligations	2,202		2,056
Deferred revenues	6,286		4,912
Total current liabilities	21,215		20,156
LONG-TERM LIABILITIES:
Lease financing obligations, excluding current portion	16,509		18,185
Other long-term liabilities	2,890		1,447
Total long-term liabilities	19,399		19,632
STOCKHOLDERS' EQUITY:
Common stock	465		463
Additional paid-in capital	354,341		352,589
Treasury stock	(28,130)		(28,130)
Accumulated other comprehensive income	780		509
Accumulated deficit	(256,820)		(243,233)
Total Echelon Corporation stockholders' equity	70,636		82,198
Noncontrolling interest in subsidiary	1,006		1,597
Total stockholders' equity	71,642		83,795
Total liabilities and stockholders' equity	$ 112,256		$ 123,583

[1] Includes related party receivable of $5.3 million and $1.6 million as of September 30, 2013 and December 31, 2012, respectively