Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 4,920	$ 7,261
Short-term investments	11,940	11,967
Restricted investments	1,250	1,250
Accounts receivable, net	3,147	2,296
Inventories	2,951	3,251
Deferred cost of revenues	840	1,039
Other current assets	1,576	1,152
Total current assets	26,624	28,216
Property and equipment, net	438	458
Intangible assets, net	611	725
Other long-term assets	337	987
Total assets	28,010	30,386
CURRENT LIABILITIES:
Accounts payable	2,995	2,317
Accrued liabilities	1,768	1,878
Deferred revenues	1,088	1,812
Total current liabilities	5,851	6,007
LONG-TERM LIABILITIES:
Other long-term liabilities	586	652
Total long-term liabilities	586	652
STOCKHOLDERS’ EQUITY:
Common stock	49	48
Additional paid-in capital	360,223	359,339
Treasury stock	(28,130)	(28,130)
Accumulated other comprehensive loss	(2,005)	(1,821)
Accumulated deficit	(308,564)	(305,963)
Total Echelon Corporation stockholders’ equity	21,573	23,473
Noncontrolling interest in subsidiary	0	254
Total stockholders’ equity	21,573	23,727
Total liabilities and stockholders’ equity	$ 28,010	$ 30,386