5. Investments (Tables)

9 Months Ended

Sep. 30, 2019

Schedule of Investments [Abstract]

Schedule of gains in invesments

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
	(In thousands)
Change in fair value of investment, warrants	$	(3,216	)	$	(5,067	)	$	(822	)	$	(9,848	)
Change in fair value of investment, common stock		(1,050	)		(19,144	)		10,444			(44,113	)
Loss on sale of investment, common stock		(915	)		(3,705	)		(8,147	)		(3,705	)
Net realized and unrealized gain (loss) on investment at fair value	$	(5,181	)	$	(27,916	)	$	1,475		$	(57,666	)