Cash and cash equivalents and marketable securities (Tables)

12 Months Ended

Dec. 31, 2014

Cash and cash equivalents and marketable securities

Schedule of cash and cash equivalents, and marketable securities

	December 31,
	2014		2013
Cash and cash equivalents:
Cash	$	3,247	$	3,655
Money market accounts		5,602		23,683
Total cash and cash equivalents	$	8,849	$	27,338
Short-term marketable securities:
Marketable securities	$	1,614	$	32,962
Total short-term marketable securities	$	1,614	$	32,962