Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Carrying Value and Fair Value of Certain Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table provides the carrying value and fair value of certain financial assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2019 and 2018:

	Carrying Value		Fair Value Measurement at December 31, 2019
			Level 1		Level 2		Level 3
	(in thousands)
Cash and cash equivalents	$	25,028	$	25,028	$	—	$	—
Restricted cash equivalents	25		25		—		—

	Carrying Value		Fair Value Measurement at December 31, 2018
			Level 1		Level 2		Level 3
	(In thousands)
Cash and cash equivalents	$	7,703	$	7,703	$	—	$	—
Restricted cash equivalents	500		500		—		—
Marketable securities—held-to-maturity:
Government agency bond	$	21,473	$	21,473	$	—	$	—
U.S. Treasury Bills	16,482		16,482		—		—
Total marketable securities	$	37,955	$	37,955	$	—	$	—
Credit facility repayment feature liability	$	5,060	$	—	$	—	$	5,060