Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 5,846	$ 7,261
Restricted investments	1,250	1,250
Short-term investments	11,960	11,967
Accounts receivable, net	2,556	2,296
Inventories	3,566	3,251
Deferred cost of revenues	529	1,039
Other current assets	1,516	1,152
Total current assets	27,223	28,216
Property and equipment, net	453	458
Intangible assets, net	668	725
Other long-term assets	558	987
Total assets	28,902	30,386
CURRENT LIABILITIES:
Accounts payable	2,570	2,317
Accrued liabilities	2,256	1,878
Deferred revenues	849	1,812
Total current liabilities	5,675	6,007
LONG-TERM LIABILITIES:
Other long-term liabilities	616	652
Total long-term liabilities	616	652
STOCKHOLDERS’ EQUITY:
Common stock	49	48
Additional paid-in capital	359,715	359,339
Treasury stock	(28,130)	(28,130)
Accumulated other comprehensive loss	(1,681)	(1,821)
Accumulated deficit	(307,342)	(305,963)
Total Echelon Corporation stockholders’ equity	22,611	23,473
Noncontrolling interest in subsidiary	0	254
Total stockholders’ equity	22,611	23,727
Total liabilities and stockholders’ equity	$ 28,902	$ 30,386