Basis of Presentation and Significant Policies - Narrative (Details) $ in Thousands			3 Months Ended				6 Months Ended
	May 04, 2023 USD ($)	Mar. 31, 2021 segment	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment		2
Net (loss) income			$ 25,591	$ 435	$ (1,576)	$ (3,701)	$ 26,026	$ (5,277)
Net cash provided by (used in) operating activities							1,865	2,937
Cash and cash equivalents			21,368		$ 13,287		21,368	$ 13,287	$ 4,377
Investments in equity securities			4,783				4,783		$ 3,490
Cash, FDIC insured amount			250				250
Cash in excess of FDIC limit			$ 1,200				$ 1,200
TTG Imaging Solutions, LLC And Insignia Parent, LLC | Digirad Health Inc.
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash proceeds from sale of equity	$ 19,700