Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Cash and Cash Equivalents, Restricted Cash and Investments

Cash and cash equivalents and investments as of September 30, 2018 and December 31, 2017 consisted of the following (in thousands):

	September 30, 2018		December 31, 2017
Cash and cash equivalents
Cash	$	65,707	$	49,452
Money market funds	57,333		56,640
Total cash and cash equivalents	123,040		106,092
Short-term investments
Short-term investments	38		51
Long-term investments
Long-term restricted investments	1,181		1,181
Total cash and cash equivalents and investments	$	124,259	$	107,324