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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2018
Fair Value Disclosures [Abstract] |
Schedule Of Fair Value Of Investments In And Unfunded Commitments To Funds Measured At Net Asset Value |
|  | June 30, 2018 |
|  | Fair value of investments |  |  | Unfunded commitments |
Money market funds |  | $ | 17,883 |  |  | $ | — |
Mutual funds |  |  | 10,060 |  |  |  | — |
Private equity funds |  |  | 5,050 |  |  |  | 1,530 |
Partnership interests |  |  | 4,519 |  |  |  | 1,324 |
Total |  | $ | 37,512 |  |  | $ | 2,854 |
|  | December 31, 2017 |
|  | Fair value of investments |  |  | Unfunded commitments |
Money market funds |  | $ | 77,441 |  |  | $ | — |
Mutual funds |  |  | 11,748 |  |  |  | — |
Private equity funds |  |  | 7,677 |  |  |  | 1,825 |
Partnership interests |  |  | 5,124 |  |  |  | 1,330 |
Total |  | $ | 101,990 |  |  | $ | 3,155 |
Fair Value Of Assets And Liabilities Measured On Recurring Basis |
|  | June 30, 2018 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Financial instruments owned: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government securities |  | $ | 19,943 |  |  | $ | 19,943 |  |  | $ | — |  |  | $ | — |
U.S. government agency securities |  |  | 138,884 |  |  |  | — |  |  |  | 138,884 |  |  |  | — |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency |  |  | 362,939 |  |  |  | — |  |  |  | 362,939 |  |  |  | — |
Non-agency |  |  | 20,661 |  |  |  | — |  |  |  | 20,660 |  |  |  | 1 |
Asset-backed securities |  |  | 114,350 |  |  |  | — |  |  |  | 113,995 |  |  |  | 355 |
Corporate securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed income securities |  |  | 359,652 |  |  |  | 904 |  |  |  | 358,748 |  |  |  | — |
Equity securities |  |  | 54,554 |  |  |  | 54,265 |  |  |  | 166 |  |  |  | 123 |
Sovereign debt |  |  | 48,088 |  |  |  | — |  |  |  | 48,088 |  |  |  | — |
State and municipal securities |  |  | 158,352 |  |  |  | — |  |  |  | 158,352 |  |  |  | — |
Total financial instruments owned |  |  | 1,277,423 |  |  |  | 75,112 |  |  |  | 1,201,832 |  |  |  | 479 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government agency securities |  |  | 5,049 |  |  |  | 515 |  |  |  | 4,534 |  |  |  | — |
State and municipal securities |  |  | 69,461 |  |  |  | — |  |  |  | 69,461 |  |  |  | — |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency |  |  | 261,243 |  |  |  | — |  |  |  | 261,243 |  |  |  | — |
Commercial |  |  | 69,480 |  |  |  | — |  |  |  | 69,480 |  |  |  | — |
Non-agency |  |  | 1,406 |  |  |  | — |  |  |  | 1,406 |  |  |  | — |
Corporate fixed income securities |  |  | 1,270,616 |  |  |  | — |  |  |  | 1,270,616 |  |  |  | — |
Asset-backed securities |  |  | 1,798,181 |  |  |  | — |  |  |  | 1,798,181 |  |  |  | — |
Total available-for-sale securities |  |  | 3,475,436 |  |  |  | 515 |  |  |  | 3,474,921 |  |  |  | — |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate equity securities |  |  | 47,648 |  |  |  | 47,648 |  |  |  | — |  |  |  | — |
Auction rate securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  |  | 25,303 |  |  |  | — |  |  |  | — |  |  |  | 25,303 |
Municipal securities |  |  | 846 |  |  |  | — |  |  |  | — |  |  |  | 846 |
Other |  |  | 1,056 |  |  |  | — |  |  |  | 199 |  |  |  | 857 |
Investments in funds measured at NAV |  |  | 19,629 |  |  |  |  |  |  |  |  |  |  |  |  |
Total investments |  |  | 94,482 |  |  |  | 47,648 |  |  |  | 199 |  |  |  | 27,006 |
Cash equivalents measured at NAV |  |  | 17,883 |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative contracts (1) |  |  | 12,038 |  |  |  | — |  |  |  | 12,038 |  |  |  | — |
|  | $ | 4,877,262 |  |  | $ | 123,275 |  |  | $ | 4,688,990 |  |  | $ | 27,485 |
(1) | Included in other assets in the consolidated statements of financial condition.
|  | June 30, 2018 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial instruments sold, but not yet purchased: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government securities |  | $ | 444,941 |  |  | $ | 444,941 |  |  | $ | — |  |  | $ | — |
U.S. government agency securities |  |  | 30,623 |  |  |  | — |  |  |  | 30,623 |  |  |  | — |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency |  |  | 143,284 |  |  |  | — |  |  |  | 143,284 |  |  |  | — |
Corporate securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed income securities |  |  | 243,333 |  |  |  | 462 |  |  |  | 242,871 |  |  |  | — |
Equity securities |  |  | 63,916 |  |  |  | 63,916 |  |  |  | — |  |  |  | — |
Sovereign debt |  |  | 18,584 |  |  |  | — |  |  |  | 18,584 |  |  |  | — |
Total financial instruments sold, but not yet purchased |  | $ | 944,681 |  |  | $ | 509,319 |  |  | $ | 435,362 |  |  | $ | — |
Assets and liabilities measured at fair value on a recurring basis as of December 31, 2017, are presented below (in thousands):
|  | December 31, 2017 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Financial instruments owned: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government securities |  | $ | 13,466 |  |  | $ | 13,466 |  |  | $ | — |  |  | $ | — |
U.S. government agency securities |  |  | 147,223 |  |  |  | — |  |  |  | 147,223 |  |  |  | — |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency |  |  | 302,445 |  |  |  | — |  |  |  | 302,445 |  |  |  | — |
Non-agency |  |  | 29,356 |  |  |  | — |  |  |  | 29,355 |  |  |  | 1 |
Asset-backed securities |  |  | 76,752 |  |  |  | — |  |  |  | 76,395 |  |  |  | 357 |
Corporate securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed income securities |  |  | 325,471 |  |  |  | 362 |  |  |  | 324,867 |  |  |  | 242 |
Equity securities |  |  | 46,802 |  |  |  | 46,411 |  |  |  | 138 |  |  |  | 253 |
Sovereign debt |  |  | 32,470 |  |  |  | — |  |  |  | 32,470 |  |  |  | — |
State and municipal securities |  |  | 169,699 |  |  |  | — |  |  |  | 169,699 |  |  |  | — |
Total financial instruments owned |  |  | 1,143,684 |  |  |  | 60,239 |  |  |  | 1,082,592 |  |  |  | 853 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government agency securities |  |  | 4,983 |  |  |  | 516 |  |  |  | 4,467 |  |  |  | — |
State and municipal securities |  |  | 70,559 |  |  |  | — |  |  |  | 70,559 |  |  |  | — |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency |  |  | 305,530 |  |  |  | — |  |  |  | 305,530 |  |  |  | — |
Commercial |  |  | 72,488 |  |  |  | — |  |  |  | 72,488 |  |  |  | — |
Non-agency |  |  | 1,568 |  |  |  | — |  |  |  | 1,568 |  |  |  | — |
Corporate fixed income securities |  |  | 1,211,442 |  |  |  | — |  |  |  | 1,211,442 |  |  |  | — |
Asset-backed securities |  |  | 2,106,938 |  |  |  | — |  |  |  | 2,106,938 |  |  |  | — |
Total available-for-sale securities |  |  | 3,773,508 |  |  |  | 516 |  |  |  | 3,772,992 |  |  |  | — |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate equity securities |  |  | 49,978 |  |  |  | 49,978 |  |  |  | — |  |  |  | — |
Auction rate securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  |  | 34,789 |  |  |  | — |  |  |  | — |  |  |  | 34,789 |
Municipal securities |  |  | 846 |  |  |  | — |  |  |  | — |  |  |  | 846 |
Other |  |  | 1,217 |  |  |  | — |  |  |  | 360 |  |  |  | 857 |
Investments measured at NAV |  |  | 24,549 |  |  |  |  |  |  |  |  |  |  |  |  |
Total investments |  |  | 111,379 |  |  |  | 49,978 |  |  |  | 360 |  |  |  | 36,492 |
Cash equivalents measured at NAV |  |  | 77,441 |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative contracts (1) |  |  | 7,995 |  |  |  | — |  |  |  | 7,995 |  |  |  | — |
|  | $ | 5,114,007 |  |  | $ | 110,733 |  |  | $ | 4,863,939 |  |  | $ | 37,345 |
(1) | Included in other assets in the consolidated statements of financial condition.
|  | December 31, 2017 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial instruments sold, but not yet purchased: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government securities |  | $ | 442,402 |  |  | $ | 442,402 |  |  | $ | — |  |  | $ | — |
U.S. government agency securities |  |  | 10,348 |  |  |  | — |  |  |  | 10,348 |  |  |  | — |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency |  |  | 86,612 |  |  |  | — |  |  |  | 86,612 |  |  |  | — |
Corporate securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed income securities |  |  | 180,755 |  |  |  | — |  |  |  | 180,755 |  |  |  | — |
Equity securities |  |  | 38,510 |  |  |  | 38,070 |  |  |  | 440 |  |  |  | — |
Sovereign debt |  |  | 20,236 |  |  |  | — |  |  |  | 20,236 |  |  |  | — |
Total financial instruments sold, but not yet purchased |  | $ | 778,863 |  |  | $ | 480,472 |  |  | $ | 298,391 |  |  | $ | — |
Schedule Of Changes In Fair Value Associated With Level 3 Financial Instruments |
|  | Three Months Ended June 30, 2018 |
|  | Financial instruments owned |  |  | Investments |
|  | Mortgage- Backed Securities – Non-Agency |  |  | Asset-Backed Securities |  |  | Fixed Income Securities |  |  | Equity Securities |  |  | Auction Rate Securities – Equity |  |  | Auction Rate Securities – Municipal |  |  | Other |
Balance at March 31, 2018 |  | $ | 1 |  |  | $ | 357 |  |  | $ | 229 |  |  | $ | 320 |  |  | $ | 25,287 |  |  | $ | 847 |  |  | $ | 857 |
Unrealized gains/(losses): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Included in changes in net assets (1) |  |  | — |  |  |  | 3 |  |  |  | — |  |  |  | (197 | ) |  |  | 16 |  |  |  | (1 | ) |  |  | — |
Realized gains/(losses) (1) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Purchases |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Sales |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Redemptions |  |  | — |  |  |  | (5 | ) |  |  | (229 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Transfers: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Into Level 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Out of Level 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net change |  |  | — |  |  |  | (2 | ) |  |  | (229 | ) |  |  | (197 | ) |  |  | 16 |  |  |  | (1 | ) |  |  | — |
Balance at June 30, 2018 |  | $ | 1 |  |  | $ | 355 |  |  | $ | — |  |  | $ | 123 |  |  | $ | 25,303 |  |  | $ | 846 |  |  | $ | 857 |
(1) | Realized and unrealized gains/(losses) related to financial instruments owned and investments are reported in other income in the consolidated statements of operations.
|  | Six Months Ended June 30, 2018 |
|  | Financial instruments owned |  |  | Investments |
|  | Mortgage- Backed Securities – Non-Agency |  |  | Asset-Backed Securities |  |  | Fixed Income Securities |  |  | Equity Securities |  |  | Auction Rate Securities – Equity |  |  | Auction Rate Securities – Municipal |  |  | Other |
Balance at December 31, 2017 |  | $ | 1 |  |  | $ | 357 |  |  | $ | 242 |  |  | $ | 253 |  |  | $ | 34,789 |  |  | $ | 846 |  |  | $ | 857 |
Unrealized gains/(losses): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Included in changes in net assets (1) |  |  | — |  |  |  | 3 |  |  |  | — |  |  |  | (130 | ) |  |  | 89 |  |  |  | — |  |  |  | — |
Realized gains/(losses) (1) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Purchases |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Sales |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Redemptions |  |  | — |  |  |  | (5 | ) |  |  | (242 | ) |  |  | — |  |  |  | (9,575 | ) |  |  | — |  |  |  | — |
Transfers: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Into Level 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Out of Level 3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net change |  |  | — |  |  |  | (2 | ) |  |  | (242 | ) |  |  | (130 | ) |  |  | (9,486 | ) |  |  | — |  |  |  | — |
Balance at June 30, 2018 |  | $ | 1 |  |  | $ | 355 |  |  | $ | — |  |  | $ | 123 |  |  | $ | 25,303 |  |  | $ | 846 |  |  | $ | 857 |
(1) | Realized and unrealized gains/(losses) related to financial instruments owned and investments are reported in other income in the consolidated statements of operations.
Quantitative Information Related To The Significant Unobservable Inputs Utilized In Level 3 Recurring Fair Value Measurements |
|  | Valuation technique |  | Unobservable input |  | Range |  | Weighted average |
Investments: |  |  |  |  |  |  |  |  |  |
Auction rate securities: |  |  |  |  |  |  |  |  |  |
Equity securities |  | Discounted cash flow |  | Discount rate |  | 1.3% - 10.2% |  | 6.1% |
|  |  |  | Workout period |  | 2-3 years |  | 2.6 years |
Municipal securities |  | Discounted cash flow |  | Discount rate |  | 0.6% - 9.9% |  | 3.4% |
|  |  |  | Workout period |  | 1-4 years |  | 1.9 years |
Schedule Of Fair Value Of Financial Instruments |
|  | June 30, 2018 |  |  | December 31, 2017 |
|  | Carrying Value |  |  | Estimated Fair Value |  |  | Carrying Value |  |  | Estimated Fair Value |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 472,237 |  |  | $ | 472,237 |  |  | $ | 696,283 |  |  | $ | 696,283 |
Cash segregated for regulatory purposes |  |  | 112,800 |  |  |  | 112,800 |  |  |  | 90,802 |  |  |  | 90,802 |
Securities purchased under agreements to resell |  |  | 566,041 |  |  |  | 566,041 |  |  |  | 512,220 |  |  |  | 512,220 |
Financial instruments owned |  |  | 1,277,423 |  |  |  | 1,277,423 |  |  |  | 1,143,684 |  |  |  | 1,143,684 |
Available-for-sale securities |  |  | 3,475,436 |  |  |  | 3,475,436 |  |  |  | 3,773,508 |  |  |  | 3,773,508 |
Held-to-maturity securities |  |  | 4,519,985 |  |  |  | 4,478,399 |  |  |  | 3,698,098 |  |  |  | 3,710,478 |
Loans held for sale |  |  | 210,611 |  |  |  | 210,611 |  |  |  | 226,068 |  |  |  | 226,068 |
Bank loans |  |  | 7,347,371 |  |  |  | 7,291,212 |  |  |  | 6,947,759 |  |  |  | 6,953,328 |
Investments |  |  | 94,482 |  |  |  | 94,482 |  |  |  | 111,379 |  |  |  | 111,379 |
Derivative contracts (1) |  |  | 12,038 |  |  |  | 12,038 |  |  |  | 7,995 |  |  |  | 7,995 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities sold under agreements to repurchase |  | $ | 514,334 |  |  | $ | 514,334 |  |  | $ | 233,704 |  |  | $ | 233,704 |
Bank deposits |  |  | 13,890,849 |  |  |  | 13,164,993 |  |  |  | 13,411,935 |  |  |  | 12,702,746 |
Financial instruments sold, but not yet purchased |  |  | 944,681 |  |  |  | 944,681 |  |  |  | 778,863 |  |  |  | 778,863 |
Federal Home Loan Bank advances |  |  | 760,000 |  |  |  | 760,000 |  |  |  | 745,000 |  |  |  | 745,000 |
Borrowings |  |  | 243,000 |  |  |  | 243,000 |  |  |  | 256,000 |  |  |  | 256,000 |
Senior notes |  |  | 1,015,455 |  |  |  | 1,020,200 |  |  |  | 1,014,940 |  |  |  | 1,044,768 |
Debentures to Stifel Financial Capital Trusts |  |  | 67,500 |  |  |  | 58,204 |  |  |  | 67,500 |  |  |  | 64,962 |
(1) | Included in other assets in the consolidated statements of financial condition.
Estimated Fair Values Of Financial Instruments Not Measured At Fair Value |
|  | June 30, 2018 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 454,354 |  |  | $ | 454,354 |  |  | $ | — |  |  | $ | — |
Cash segregated for regulatory purposes |  |  | 112,800 |  |  |  | 112,800 |  |  |  | — |  |  |  | — |
Securities purchased under agreements to resell |  |  | 566,041 |  |  |  | 502,063 |  |  |  | 63,978 |  |  |  | — |
Held-to-maturity securities |  |  | 4,478,399 |  |  |  | — |  |  |  | 4,317,604 |  |  |  | 160,795 |
Loans held for sale |  |  | 210,611 |  |  |  | — |  |  |  | 210,611 |  |  |  | — |
Bank loans |  |  | 7,291,212 |  |  |  | — |  |  |  | 7,291,212 |  |  |  | — |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities sold under agreements to repurchase |  | $ | 514,334 |  |  | $ | 127,866 |  |  | $ | 386,468 |  |  | $ | — |
Bank deposits |  |  | 13,164,993 |  |  |  | — |  |  |  | 13,164,993 |  |  |  | — |
Federal Home Loan Bank advances |  |  | 760,000 |  |  |  | 760,000 |  |  |  | — |  |  |  | — |
Borrowings |  |  | 243,000 |  |  |  | 243,000 |  |  |  | — |  |  |  | — |
Senior notes |  |  | 1,020,200 |  |  |  | 1,020,200 |  |  |  | — |  |  |  | — |
Debentures to Stifel Financial Capital Trusts |  |  | 58,204 |  |  |  | — |  |  |  | — |  |  |  | 58,204 |
|  | December 31, 2017 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 618,842 |  |  | $ | 618,842 |  |  | $ | — |  |  | $ | — |
Cash segregated for regulatory purposes |  |  | 90,802 |  |  |  | 90,802 |  |  |  | — |  |  |  | — |
Securities purchased under agreements to resell |  |  | 512,220 |  |  |  | 428,740 |  |  |  | 83,480 |  |  |  | — |
Held-to-maturity securities |  |  | 3,710,478 |  |  |  | — |  |  |  | 3,517,781 |  |  |  | 192,697 |
Loans held for sale |  |  | 226,068 |  |  |  | — |  |  |  | 226,068 |  |  |  | — |
Bank loans |  |  | 6,953,328 |  |  |  | — |  |  |  | 6,953,328 |  |  |  | — |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities sold under agreements to repurchase |  | $ | 233,704 |  |  | $ | 92,278 |  |  | $ | 141,426 |  |  | $ | — |
Bank deposits |  |  | 12,702,746 |  |  |  | — |  |  |  | 12,702,746 |  |  |  | — |
Federal Home Loan Bank advances |  |  | 745,000 |  |  |  | 745,000 |  |  |  | — |  |  |  | — |
Borrowings |  |  | 256,000 |  |  |  | 256,000 |  |  |  | — |  |  |  | — |
Senior notes |  |  | 1,044,768 |  |  |  | 1,044,768 |  |  |  | — |  |  |  | — |
Debentures to Stifel Financial Capital Trusts |  |  | 64,962 |  |  |  | — |  |  |  | — |  |  |  | 64,962 |

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