Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets Measured on Recurring Basis

Assets measured at fair value on a recurring basis are as follows (in thousands):

	Total		Level 1		Level 2		Level 3
March 31, 2019 (unaudited):
Money market funds	$	31,335	$	31,335	$	—	$	—
December 31, 2018:
Money market funds	$	4,156	$	4,156	$	—	$	—