Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Measurements

Schedule of assets and liabilities measured and recorded in financial statements at fair value on a recurring basis

	September 30, 2019
(In thousands)	Total		Level 1		Level 2		Level 3
Assets
Cash	$	250	$	250	$	—	$	—
Money market funds		25,635		25,635		—		—
Other cash equivalents – commercial paper		6,726		—		6,726		—
Short-term investments – commercial paper		4,257		—		4,257		—
Short-term investments – U.S. treasury bills		4,718		4,718		—		—
Total assets	$	41,586	$	30,603	$	10,983	$	—
Total liabilities	$	—	$	—	$	—	$	—
	December 31, 2018
(In thousands)	Total		Level 1		Level 2		Level 3
Assets
Cash	$	8,446	$	8,446	$	—	$	—
Money market funds		61,177		61,177		—		—
Other cash equivalents – commercial paper		1,808		—		1,808		—
Total assets	$	71,431	$	69,623	$	1,808	$	—
Total liabilities	$	—	$	—	$	—	$	—