Significant Accounting Policies - Schedule of Fair Value Measurements on a Recurring Basis (Details) - USD ($)
$ in Thousands

Jun. 30, 2026

Dec. 31, 2025

Investments at fair value (see note 4):

Investments at fair value

$ 35,445

Fair Value, Recurring [Member]

Investments at fair value (see note 4):

Investments at fair value

$ 164,270

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

344,357

Fair Value, Recurring [Member] | DNA [Member]

Marketable Securities (see note 3):

Marketable Securities

571

540

Fair Value, Recurring [Member] | Entera [Member]

Marketable Securities (see note 3):

Marketable Securities

227

Fair Value, Recurring [Member] | Pelthos [Member]

Marketable Securities (see note 3):

Marketable Securities

4,650

Fair Value, Recurring [Member] | Nano [Member]

Marketable Securities (see note 3):

Marketable Securities

21,866

8,371

Fair Value, Recurring [Member] | Nano’s Put options and written Call options, net [Member]

Marketable Securities (see note 3):

Marketable Securities

275

Fair Value, Recurring [Member] | Ruby Capital [Member]

Investments at fair value (see note 4):

Investments at fair value

464

Fair Value, Recurring [Member] | Scilex Royalty Purchase Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

2,209

2,226

Fair Value, Recurring [Member] | Scilex Tranche A Note [Member]

Investments at fair value (see note 4):

Investments at fair value

23,063

22,150

Fair Value, Recurring [Member] | Scilex Tranche B Note [Member]

Investments at fair value (see note 4):

Investments at fair value

11,473

10,770

Fair Value, Recurring [Member] | Scilex Warrants Note B [Member]

Investments at fair value (see note 4):

Investments at fair value

850

299

Fair Value, Recurring [Member] | Investment in Alpha Tau's warrants [Member]

Investments at fair value (see note 4):

Investments at fair value

29,259

6,242

Fair Value, Recurring [Member] | Warren at Bay Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

2,726

Fair Value, Recurring [Member] | 83 Wythe Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

2,382

Fair Value, Recurring [Member] | Profit Sharing Loan Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

2,123

1,890

Fair Value, Recurring [Member] | Loan agreement measured in fair value [Member]

Investments at fair value (see note 4):

Investments at fair value

38,422

27,943

Fair Value, Recurring [Member] | Investment in Alpha Tau's shares [Member]

Investments at fair value (see note 4):

Investments at fair value

182,024

71,623

Fair Value, Recurring [Member] | Loan to an equity method investee [Member]

Investments at fair value (see note 4):

Investments at fair value

448

553

Fair Value, Recurring [Member] | Convertible note [Member]

Investments at fair value (see note 4):

Investments at fair value

4,636

Fair Value, Recurring [Member] | Investment in Shares [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

9,578

Fair Value, Recurring [Member] | Investment in A&R Pre-Funded Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

7,707

Fair Value, Recurring [Member] | Investment in A&R Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

2,055

Fair Value, Recurring [Member] | Investment in A&R Note and Note Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

9,012

Fair Value, Recurring [Member] | Level 1 [Member]

Investments at fair value (see note 4):

Investments at fair value

85,411

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

214,039

Fair Value, Recurring [Member] | Level 1 [Member] | DNA [Member]

Marketable Securities (see note 3):

Marketable Securities

571

540

Fair Value, Recurring [Member] | Level 1 [Member] | Entera [Member]

Marketable Securities (see note 3):

Marketable Securities

227

Fair Value, Recurring [Member] | Level 1 [Member] | Pelthos [Member]

Marketable Securities (see note 3):

Marketable Securities

4,650

Fair Value, Recurring [Member] | Level 1 [Member] | Nano [Member]

Marketable Securities (see note 3):

Marketable Securities

21,866

8,371

Fair Value, Recurring [Member] | Level 1 [Member] | Nano’s Put options and written Call options, net [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 1 [Member] | Ruby Capital [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Scilex Royalty Purchase Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Scilex Tranche A Note [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Scilex Tranche B Note [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Scilex Warrants Note B [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Investment in Alpha Tau's warrants [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Warren at Bay Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | 83 Wythe Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Profit Sharing Loan Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Loan agreement measured in fair value [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Investment in Alpha Tau's shares [Member]

Investments at fair value (see note 4):

Investments at fair value

182,024

71,623

Fair Value, Recurring [Member] | Level 1 [Member] | Loan to an equity method investee [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Convertible note [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 1 [Member] | Investment in Shares [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

9,578

Fair Value, Recurring [Member] | Level 1 [Member] | Investment in A&R Pre-Funded Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 1 [Member] | Investment in A&R Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 1 [Member] | Investment in A&R Note and Note Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 2 [Member]

Investments at fair value (see note 4):

Investments at fair value

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

7,982

Fair Value, Recurring [Member] | Level 2 [Member] | DNA [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 2 [Member] | Entera [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 2 [Member] | Pelthos [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 2 [Member] | Nano [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 2 [Member] | Nano’s Put options and written Call options, net [Member]

Marketable Securities (see note 3):

Marketable Securities

275

Fair Value, Recurring [Member] | Level 2 [Member] | Ruby Capital [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Scilex Royalty Purchase Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Scilex Tranche A Note [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Scilex Tranche B Note [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Scilex Warrants Note B [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Investment in Alpha Tau's warrants [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Warren at Bay Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | 83 Wythe Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Profit Sharing Loan Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Loan agreement measured in fair value [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Investment in Alpha Tau's shares [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Loan to an equity method investee [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Convertible note [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 2 [Member] | Investment in Shares [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 2 [Member] | Investment in A&R Pre-Funded Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

7,707

Fair Value, Recurring [Member] | Level 2 [Member] | Investment in A&R Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 2 [Member] | Investment in A&R Note and Note Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 3 [Member]

Investments at fair value (see note 4):

Investments at fair value

78,859

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

122,336

Fair Value, Recurring [Member] | Level 3 [Member] | DNA [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 3 [Member] | Entera [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 3 [Member] | Pelthos [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 3 [Member] | Nano [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 3 [Member] | Nano’s Put options and written Call options, net [Member]

Marketable Securities (see note 3):

Marketable Securities

Fair Value, Recurring [Member] | Level 3 [Member] | Ruby Capital [Member]

Investments at fair value (see note 4):

Investments at fair value

464

Fair Value, Recurring [Member] | Level 3 [Member] | Scilex Royalty Purchase Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

2,209

2,226

Fair Value, Recurring [Member] | Level 3 [Member] | Scilex Tranche A Note [Member]

Investments at fair value (see note 4):

Investments at fair value

23,063

22,150

Fair Value, Recurring [Member] | Level 3 [Member] | Scilex Tranche B Note [Member]

Investments at fair value (see note 4):

Investments at fair value

11,473

10,770

Fair Value, Recurring [Member] | Level 3 [Member] | Scilex Warrants Note B [Member]

Investments at fair value (see note 4):

Investments at fair value

850

299

Fair Value, Recurring [Member] | Level 3 [Member] | Investment in Alpha Tau's warrants [Member]

Investments at fair value (see note 4):

Investments at fair value

29,259

6,242

Fair Value, Recurring [Member] | Level 3 [Member] | Warren at Bay Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

2,726

Fair Value, Recurring [Member] | Level 3 [Member] | 83 Wythe Loan [Member]

Investments at fair value (see note 4):

Investments at fair value

2,382

Fair Value, Recurring [Member] | Level 3 [Member] | Profit Sharing Loan Agreement [Member]

Investments at fair value (see note 4):

Investments at fair value

2,123

1,890

Fair Value, Recurring [Member] | Level 3 [Member] | Loan agreement measured in fair value [Member]

Investments at fair value (see note 4):

Investments at fair value

38,422

27,943

Fair Value, Recurring [Member] | Level 3 [Member] | Investment in Alpha Tau's shares [Member]

Investments at fair value (see note 4):

Investments at fair value

Fair Value, Recurring [Member] | Level 3 [Member] | Loan to an equity method investee [Member]

Investments at fair value (see note 4):

Investments at fair value

448

553

Fair Value, Recurring [Member] | Level 3 [Member] | Convertible note [Member]

Investments at fair value (see note 4):

Investments at fair value

$ 4,636

Fair Value, Recurring [Member] | Level 3 [Member] | Investment in Shares [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 3 [Member] | Investment in A&R Pre-Funded Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

Fair Value, Recurring [Member] | Level 3 [Member] | Investment in A&R Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

2,055

Fair Value, Recurring [Member] | Level 3 [Member] | Investment in A&R Note and Note Warrants [Member]

Investment in associate at fair value- Lifeward (see note 9):

Investment in shares and other instruments of investee

$ 9,012