Money Market Funds (Tables)

12 Months Ended

Dec. 31, 2016

Cash and Cash Equivalents [Abstract]

Schedule of money market funds

The following table presents money market funds at their level within the fair value hierarchy at December 31, 2016 and 2015 (in thousands).

	Total		Level 1		Level 2		Level 3
December 31, 2016:
Money market funds	$	10,336	$	10,336	$	—	$	—
December 31, 2015:
Money market funds	$	15,721	$	15,721	$	—	$	—