Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 16,751		$ 18,876
Short-term investments	42,980		42,979
Accounts receivable, net	15,179	[1]	15,725	[1]
Inventories	6,976		11,729
Deferred cost of goods sold	1,342		846
Other current assets	2,955		2,662
Total current assets	86,183		92,817
Property and equipment, net	20,245		21,777
Goodwill	8,242		8,276
Other long-term assets	698		713
Total assets	115,368		123,583
CURRENT LIABILITIES:
Accounts payable	6,207		8,551
Accrued liabilities	7,013		4,637
Current portion of lease financing obligations	2,147		2,056
Deferred revenues	6,028		4,912
Total current liabilities	21,395		20,156
LONG-TERM LIABILITIES:
Lease financing obligations, excluding current portion	17,081		18,185
Other long-term liabilities	2,829		1,447
Total long-term liabilities	19,910		19,632
STOCKHOLDERS' EQUITY:
Common stock	465		463
Additional paid-in capital	353,530		352,589
Treasury stock	(28,130)		(28,130)
Accumulated other comprehensive income	232		509
Accumulated deficit	(253,307)		(243,233)
Total Echelon Corporation stockholders' equity	72,790		82,198
Noncontrolling interest in subsidiary	1,273		1,597
Total stockholders' equity	74,063		83,795
Total liabilities and stockholders' equity	$ 115,368		$ 123,583

[1] Includes related party receivable of $5.4 million and $1.6 million as of June 30, 2013 and December 31, 2012, respectively