Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on Recurring Basis

Assets measured at fair value on a recurring basis are summarized below.

(in thousands)	Level 1		Level 2		Level 3		Total December 31, 2018
Marketable Equity Security	$	11	$	—	$	—	$	11
Equity Mutual Fund	$	—	$	3,764	$	—	$	3,764
U.S. Treasury Mutual Fund	$	12,506	$	—	$	—	$	12,506
(in thousands)	Level 1		Level 2		Level 3		Total December 31, 2017
Marketable Equity Security	$	3,803	$	—	$	—	$	3,803
U.S. Treasury Mutual Fund	$	11,866	$	—	$	—	$	11,866