Cash and cash equivalents (Tables)

9 Months Ended

Sep. 30, 2013

Cash and cash equivalents

Schedule of cash and cash equivalents

	September 30, 2013		December 31, 2012
Cash and cash equivalents:
Cash	$	2,619	$	16,677
Money market accounts	42,127		39,001
Marketable securities	—		2,460
Total cash and cash equivalents	$	44,746	$	58,138