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Investment Securities
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Held-to-Maturity Securities INVESTMENT SECURITIES
The Company’s investment securities include debt and equity securities that the Company has classified as trading securities, which are carried at fair value, as well as investments in U.S. government notes, which are held by PTC, to satisfy minimum capital requirements of the OCC. The U.S. government notes are recorded at amortized cost and classified as held-to-maturity as the Company has both the intent and ability to hold these investments to maturity.

The following table summarizes investment securities (in thousands):
 December 31,
 20252024
Trading securities - at fair value:  
U.S. treasury obligations$40,029 $28,511 
Mutual funds33,559 13,627 
Money market funds— 110 
Equity securities2,505 8 
Debt securities15 11 
Total trading securities$76,108 $42,267 
Held-to-maturity securities - at amortized cost:
U.S. government notes$15,420 $15,214 
Total held-to-maturity securities$15,420 $15,214 
Total investment securities$91,528 $57,481 
At December 31, 2025, the held-to-maturity securities were scheduled to mature as follows (in thousands):
Within one yearAfter one but within five yearsAfter five but within ten yearsAfter ten yearsTotal
U.S. government notes — at amortized cost$5,432 $9,988 $— $— $15,420 
U.S. government notes — at fair value$5,444 $10,076 $— $— $15,520