Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	Three Months Ended
(in thousands, except per share data)	December 31, 2019			September 30, 2019			June 30, 2019			March 31, 2019
Total revenues	$	(5,795	)	$	44,165		$	(22,526	)	$	38,913
Net (loss) income attributable to PDL’s stockholders	$	(54,888	)	$	(17,784	)	$	(4,419	)	$	6,680
Net (loss) income per basic share	$	(0.48	)	$	(0.16	)	$	(0.04	)	$	0.05
Net (loss) income per diluted share	$	(0.48	)	$	(0.16	)	$	(0.04	)	$	0.05

	Three Months Ended
(in thousands, except per share data)	December 31, 2018		September 30, 2018		June 30, 2018			March 31, 2018
Total revenues	$	45,119	$	67,898	$	46,575		$	38,518
Net income (loss) attributable to PDL’s stockholders	$	16,279	$	25,556	$	(112,296	)	$	1,602
Net income (loss) per basic share	$	0.12	$	0.18	$	(0.76	)	$	0.01
Net income (loss) per diluted share	$	0.11	$	0.18	$	(0.76	)	$	0.01