Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 16,090	$ 18,876
Short-term investments	42,979	42,979
Accounts receivable, net	15,095	15,725
Inventories	10,549	11,729
Deferred cost of goods sold	962	846
Other current assets	3,160	2,662
Total current assets	88,835	92,817
Property and equipment, net	20,975	21,777
Goodwill	8,210	8,276
Other long-term assets	700	713
Total assets	118,720	123,583
CURRENT LIABILITIES:
Accounts payable	7,817	8,551
Accrued liabilities	8,244	4,637
Current portion of lease financing obligations	2,094	2,056
Deferred revenues	4,680	4,912
Total current liabilities	22,835	20,156
LONG-TERM LIABILITIES:
Lease financing obligations, excluding current portion	17,644	18,185
Other long-term liabilities	2,915	1,447
Total long-term liabilities	20,559	19,632
ECHELON CORPORATION STOCKHOLDERS' EQUITY:
Common stock	463	463
Additional paid-in capital	353,961	352,589
Treasury stock	(28,130)	(28,130)
Accumulated other comprehensive income	63	509
Accumulated deficit	(252,480)	(243,233)
Total Echelon Corporation stockholders' equity	73,877	82,198
Noncontrolling interest in subsidiary	1,449	1,597
Total stockholders' equity	75,326	83,795
Total liabilities and stockholders' equity	$ 118,720	$ 123,583