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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Overview and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands								12 Months Ended
	Oct. 01, 2020	Sep. 29, 2020 USD ($) shares	Sep. 10, 2020	Aug. 24, 2020 USD ($) shares	Jul. 21, 2020 USD ($) shares	Jul. 13, 2020 USD ($) shares	Jul. 10, 2020 $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) $ / shares shares	Sep. 30, 2020	Aug. 20, 2020
Overview And Basis Of Presentation [Line Items]
Distribution, record date	Sep. 22, 2020
Stockholders' equity, reverse stock split			one-for-nine reverse stock split
Stockholders' equity, reverse stock split, ratio			0.111111111
Accumulated deficit								$ (57,993)	$ (63,175)
Common stock, par value \| $ / shares							$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized \| shares							150,000,000	150,000,000	150,000,000
Extinguishment of debt						$ 32,600
Impact from recapitalization transactions						69,879
Gain on extinguishment								$ 2,691
Additional capital contribution, shares \| shares		9,000			740,000
Capital contribution, cash		$ 97			$ 8,000
Financial Support, Capital Contributions
Overview And Basis Of Presentation [Line Items]
Additional capital contribution, shares \| shares				747,000
Capital contribution, cash				$ 29,000
Stock issued during period, value				8,334
Stock issued during period, remaining cash contribution amount				$ 20,666
Common Stock
Overview And Basis Of Presentation [Line Items]
Fair value of debt						$ 67,188
Series A Preferred Stock
Overview And Basis Of Presentation [Line Items]
Number of shares exchanged \| shares							30,000
PDL BioPharma, Inc
Overview And Basis Of Presentation [Line Items]
Shares distribution ratio to PDL shareholders	7.5879%
Shares issued in exchange for extinguishment of Preferred stock \| shares							3,415,000
PDL BioPharma, Inc \| Common Stock
Overview And Basis Of Presentation [Line Items]
Common stock shares issued in exchange for extinguishment of debt \| shares						2,806,000
Impact from recapitalization transactions, Shares \| shares						6,221,000
PDL BioPharma, Inc \| LENSAR
Overview And Basis Of Presentation [Line Items]
Percentage of common stock owned										81.50%
PDL BioPharma, Inc \| PDLIH
Overview And Basis Of Presentation [Line Items]
Distribution of ownership interest in its wholly owned subsidiary											100.00%