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Balance Sheet Account Details (Tables)
 12 Months Ended
Dec. 31, 2023
Other Balance Sheet Details [Abstract]  
Schedule of Investment Categories
Excluding our investments in Viking, the following table summarizes the various investment categories at December 31, 2023 and 2022 (in thousands):
Cost
Gross unrealized
gains
Gross unrealized
losses
Estimated
fair value
December 31, 2023
Short-term investments
Bond Fund$63,763 $— $(537)$63,226 
Bank deposits17,165 12 (1)17,176 
      Corporate bonds14,850 40 (2)14,888 
      Commercial paper11,578 9 (1)11,586 
U.S. government securities6,736 18 (3)6,751 
Municipal bonds1,007 — (4)1,003 
Corporate equity securities5,775 — (5,235)540 
$120,874 $79 $(5,783)$115,170 
December 31, 2022
Short-term investments
     Bond fund$81,815 $— $(1050)$80,765 
     Commercial paper 7,211 3 — 7,214 
     Corporate bonds6,701 13 (58)6,656 
     Bank deposits5,012 2 (34)4,980 
     U.S. government securities2,232 — (70)2,162 
     Corporate equity securities5,807 262 (4,239)1,830 
     Warrants— 135 — 135 
$108,778 $415 $(5,451)$103,742 
Schedule of Available-for-Sale Debt Securities by Contractual Maturity
The following table summarizes our available-for-sale debt securities by contractual maturity (in thousands):
December 31, 2023
Amortized CostFair Value
Within one year$55,361 $55,380 
After one year through five years13,478 13,524 
     Total$68,839 $68,904 
Schedule of Available-for-Sale Debt Securities in an Unrealized Loss Position
The following table summarizes our available-for-sale debt securities in an unrealized loss position (in thousands):
Less than 12 months12 months or greaterTotal
Gross
Unrealized
Losses		Estimated
Fair Value		Gross
Unrealized
Losses		Estimated
Fair Value		Gross
Unrealized
Losses		Estimated
Fair Value
December 31, 2023
Bank deposits$(1)$4,175 $— $— $(1)$4,175 
Corporate bonds(1)1,410 (1)1,447 (2)2,857 
Commercial paper(4)10,222 — — (4)10,222 
Municipal bonds(4)1,004 — — (4)1,004 
U.S. Government Securities— 998 (3)1,502 (3)2,500 
     Total$(10)$17,809 $(4)$2,949 $(14)$20,758 
December 31, 2022
Bank deposits$(34)$2,470 $— $— $(34)$2,470 
Corporate bonds(21)3,887 (37)947 (58)4,834 
Commercial paper— 3,836 — — — 3,836 
U.S. Government Securities(70)2,161 — — (70)2,161 
     Total$(125)$12,354 $(37)$947 $(162)$13,301 
Schedule of Property and Equipment
Property and equipment are stated at cost and consists of the following (in thousands):
December 31,
20232022
Lab and office equipment$9,264 $14,172 
Leasehold improvements12,282 7,446 
Computer equipment and software716 989 
22,262 22,607 
Less accumulated depreciation and amortization(6,655)(10,125)
$15,607 $12,482 
Schedule of Goodwill and Other Identifiable Intangible Assets
Goodwill and identifiable intangible assets consist of the following (in thousands):
December 31,
20232022
Indefinite-lived intangible assets
     Goodwill$103,370 $105,673 
Definite-lived intangible assets
     Completed technology42,911 55,211 
          Less: Accumulated amortization(20,894)(22,560)
     Trade name2,642 2,642 
          Less: Accumulated amortization(1,710)(1,577)
     Customer relationships29,600 29,600 
          Less: Accumulated amortization(19,161)(17,670)
     Contractual relationships360,000 362,000 
Less: Accumulated amortization(93,782)(65,191)
Total goodwill and other identifiable intangible assets, net$402,976 $448,128 
Schedule of Accrued Liabilities
Accrued liabilities consist of the following (in thousands):
 December 31,
 20232022
Compensation$4,682 $6,201 
Professional fees2,394 662 
Customer deposit 621 621 
Amounts owed to former licensees45 3,989 
Royalties owed to third parties900 12 
Subcontractor1,756 1,756 
Supplier303 634 
Other1,766 1,806 
$12,467 $15,681 
Schedule of Other Long Term Liabilities
Other long-term liabilities consist of the following (in thousands):
 December 31,
 20232022
Unrecognized tax benefits$14,039 $21,421 
Novan contract liability13,700 — 
Other long-term liabilities19 501 
$27,758 $21,922 
Schedule of Contingent Liabilities
The following table summarizes roll-forward of contingent liabilities as of December 31, 2023 and 2022 (in thousands):
December 31, 2021
PaymentsFair Value Adjustment
December 31, 2022
PaymentsFair Value AdjustmentRepurchases
December 31, 2023
Cydex$349 $— $(265)$84 $(50)$286 $— $320 
Metabasis3,358 — 71 3,429 — (551)— 2,878 
Total $3,707 $— $(194)$3,513 $(50)$(265)$— $3,198