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Marketable Securities | 6 Months Ended
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Jun. 30, 2026
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities | 5. Marketable securities: Amortized cost, unrealized gain (loss) recognized in accumulated other comprehensive income (loss) and fair value of available-for-sale securities consisted of the following:
|  | June 30, 2026 |  |  | December 31, 2025 |
|  | Amortized Cost |  |  | Unrealized Loss |  |  | Fair Value |  |  | Amortized Cost |  |  | Unrealized Gain |  |  | Fair Value |
Current: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guaranteed investment certificates |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 14,348 |  |  | $ | 389 |  |  | $ | 14,737 |
U.S. treasuries |  |  | 238,317 |  |  |  | (131 | ) |  |  | 238,186 |  |  |  | 111,901 |  |  |  | 197 |  |  |  | 112,098 |
Commercial paper |  |  | 257,034 |  |  |  | (232 | ) |  |  | 256,802 |  |  |  | 39,555 |  |  |  | 4 |  |  |  | 39,559 |
Corporate debt securities |  |  | 316,475 |  |  |  | (304 | ) |  |  | 316,171 |  |  |  | 182,864 |  |  |  | 465 |  |  |  | 183,329 |
Total current |  |  | 811,826 |  |  |  | (667 | ) |  |  | 811,159 |  |  |  | 348,668 |  |  |  | 1,055 |  |  |  | 349,723 |
Non-current: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasuries |  |  | 131,665 |  |  |  | (596 | ) |  |  | 131,069 |  |  |  | 30,292 |  |  |  | 203 |  |  |  | 30,495 |
Corporate debt securities |  |  | 183,745 |  |  |  | (403 | ) |  |  | 183,342 |  |  |  | 6,590 |  |  |  | 67 |  |  |  | 6,657 |
Total non-current |  |  | 315,410 |  |  |  | (999 | ) |  |  | 314,411 |  |  |  | 36,882 |  |  |  | 270 |  |  |  | 37,152 |
Total |  | $ | 1,127,236 |  |  | $ | (1,666 | ) |  | $ | 1,125,570 |  |  | $ | 385,550 |  |  | $ | 1,325 |  |  | $ | 386,875 |
Allowance for credit losses or impairment on these marketable securities has not been recognized as these securities are high credit quality, investment grade securities that the Company does not intend to sell and will not be required to sell prior to their anticipated recovery. The change in fair value is primarily due to changes in interest and foreign exchange rates.

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- Definition The entire disclosure for investment in debt and equity securities and other assets at fair value and held for trading. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/942-320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/940-320/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph b -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-10 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B + Details
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