2. Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Disaggregation of revenue

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
	(In thousands)
Paid-up Revenue Agreements	$	1,203	$	7,250	$	6,067	$	70,496
Recurring Revenue Agreements		508		3,005		4,491		8,337
Other Settlements		–		3,470		–		3,470
	$	1,711	$	13,725	$	10,558	$	82,303

Schedule of short-term investments

	Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
	(In thousands)
Security Type
September 30, 2019:
Trading securities - debt	$	86,157	$	240	$	(7	)	$	86,390
Trading securities - equity		16,143		297		(360	)		16,080
	$	102,300	$	537	$	(367	)	$	102,470
December 31, 2018:
Trading securities - debt	$	33,643	$	18	$	(19	)	$	33,642
Trading securities - equity		3,389		27		(404	)		3,012
	$	37,032	$	45	$	(423	)	$	36,654

Schedule of financial assets measured at fair value

		Level 1		Level 2		Level 3
	(In thousands)
Assets as of September 30, 2019:
Trading securities - debt		$	–	$	86,390	$	–
Trading securities - equity			16,080		–		–
Investment at fair value - warrants (Note 5)			–		1,242		–
Investment at fair value - common stock (Note 5)			1,432		–		–
Total recurring fair value measurements as of September 30, 2019		$	17,512	$	87,632	$	–
Assets as of December 31, 2018:
Trading securities - debt		$	–	$	33,642	$	–
Trading securities - equity			3,012		–		–
Investment at fair value - warrants (Note 5)			–		2,064		–
Investment at fair value - common stock (Note 5)			5,395		–		–
Total recurring fair value measurements as of December 31, 2018		$	8,407	$	35,706	$	–