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Supplemental Guarantor Condensed Consolidated Financial Statements - Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
REVENUES |  |  |  |  |  |  |  |  |  |  |  |
Commissions |  |  |  |  |  |  |  |  | $ 336,620 | $ 377,317 |  | $ 417,559
Advisory fees |  |  |  |  |  |  |  |  | 320,746 | 269,119 |  | 280,247
Investment banking |  |  |  |  |  |  |  |  | 78,215 | 81,011 |  | 102,540
Interest |  |  |  |  |  |  |  |  | 48,498 | 47,649 |  | 49,032
Principal transactions, net |  |  |  |  |  |  |  |  | 23,273 | 20,481 |  | 15,180
Other |  |  |  |  |  |  |  |  | 112,986 | 62,202 |  | 33,243
Total revenue | $ 264,973 | $ 226,220 | $ 215,884 | $ 213,261 | $ 218,945 | $ 211,804 | $ 212,074 | $ 214,956 | 920,338 | 857,779 |  | 897,801
EXPENSES |  |  |  |  |  |  |  |  |  |  |  |
Compensation and related expenses |  |  |  |  |  |  |  |  | 602,138 | 584,710 |  | 610,820
Communications and technology |  |  |  |  |  |  |  |  | 71,978 | 70,390 |  | 66,549
Occupancy and equipment costs |  |  |  |  |  |  |  |  | 61,164 | 60,791 |  | 62,842
Clearing and exchange fees |  |  |  |  |  |  |  |  | 23,545 | 25,126 |  | 26,022
Interest |  |  |  |  |  |  |  |  | 28,354 | 19,437 |  | 16,329
Other |  |  |  |  |  |  |  |  | 113,423 | 119,217 |  | 117,667
Total expenses | 248,403 | 214,392 | 217,521 | 220,286 | 226,441 | 213,614 | 217,320 | 222,296 | 900,602 | 879,671 |  | 900,229
Income (loss) before income taxes from continuing operations | 16,570 | 11,828 | (1,637) | (7,025) | (7,496) | (1,810) | (5,246) | (7,340) | 19,736 | (21,892) |  | (2,428)
Other Income Tax Expense (Benefit), Continuing Operations | (4,598) | 4,425 | (274) | (1,687) | (5,072) | (751) | (2,391) | (4,048) | (2,134) | (12,262) |  | 406
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest | 21,168 | 7,403 | (1,363) | (5,338) | (2,424) | (1,059) | (2,855) | (3,292) | 21,870 | (9,630) |  | (2,834)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 2,071 | 17,339 |  | 9,139
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | [1] | 0
Net income | 21,197 | 7,864 | (1,310) | (4,751) | (1,665) | (646) | 6,711 | (3,909) | 23,000 | 491 |  | 2,898
Discontinued Operation, Tax Effect of Discontinued Operation |  |  |  |  |  |  |  |  | 941 | 7,218 |  | 3,407
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest | 29 | 461 | 53 | 587 | 759 | 413 | 9,566 | (617) | 1,130 | 10,121 |  | 5,732
Less net income attributable to noncontrolling interest, net of tax | 4 | 75 | 9 | 96 | 125 | 66 | 1,523 | (62) | 184 | 1,652 |  | 936
Net income (loss) attributable to Oppenheimer Holdings Inc. | $ 21,193 | $ 7,789 | $ (1,319) | $ (4,847) | $ (1,790) | $ (712) | $ 5,188 | $ (3,847) | 22,816 | (1,161) |  | 1,962
Other comprehensive income |  |  |  |  |  |  |  |  | 2,263 | 220 |  | 17
Total comprehensive income |  |  |  |  |  |  |  |  | 25,079 | (941) |  | 1,979
Eliminations |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |
Commissions |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Advisory fees |  |  |  |  |  |  |  |  | (4,120) | (4,215) |  | (3,682)
Investment banking |  |  |  |  |  |  |  |  | (3,000) | 0 |  | 0
Interest |  |  |  |  |  |  |  |  | (9,639) | (10,397) |  | (10,261)
Principal transactions, net |  |  |  |  |  |  |  |  | 0 | 0 |  | (64)
Other |  |  |  |  |  |  |  |  | (359) | (325) |  | (300)
Total revenue |  |  |  |  |  |  |  |  | (17,118) | (14,937) |  | (14,307)
EXPENSES |  |  |  |  |  |  |  |  |  |  |  |
Compensation and related expenses |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Communications and technology |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Occupancy and equipment costs |  |  |  |  |  |  |  |  | (359) | (325) |  | (300)
Clearing and exchange fees |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Interest |  |  |  |  |  |  |  |  | (9,639) | (10,397) |  | (10,261)
Other |  |  |  |  |  |  |  |  | (7,120) | (4,215) |  | (3,746)
Total expenses |  |  |  |  |  |  |  |  | (17,118) | (14,937) |  | (14,307)
Income (loss) before income taxes from continuing operations |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Other Income Tax Expense (Benefit), Continuing Operations |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (48,588) | (6,294) |  | (18,636)
Net income |  |  |  |  |  |  |  |  | (48,588) | (6,294) |  | (18,636)
Discontinued Operation, Tax Effect of Discontinued Operation |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Less net income attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Net income (loss) attributable to Oppenheimer Holdings Inc. |  |  |  |  |  |  |  |  | (48,588) | (6,294) |  | (18,636)
Other comprehensive income |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Total comprehensive income |  |  |  |  |  |  |  |  | (48,588) | (6,294) |  | (18,636)
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |
Commissions |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Advisory fees |  |  |  |  |  |  |  |  | 1,752 | 1,571 |  | 1,296
Investment banking |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Interest |  |  |  |  |  |  |  |  | 9,589 | 10,242 |  | 10,237
Principal transactions, net |  |  |  |  |  |  |  |  | 17 | 16 |  | 0
Other |  |  |  |  |  |  |  |  | 361 | 326 |  | 370
Total revenue |  |  |  |  |  |  |  |  | 11,719 | 12,155 |  | 11,903
EXPENSES |  |  |  |  |  |  |  |  |  |  |  |
Compensation and related expenses |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Communications and technology |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Occupancy and equipment costs |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Clearing and exchange fees |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Interest |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Other |  |  |  |  |  |  |  |  | 1,382 | 1,284 |  | 892
Total expenses |  |  |  |  |  |  |  |  | 1,382 | 1,284 |  | 892
Income (loss) before income taxes from continuing operations |  |  |  |  |  |  |  |  | 10,337 | 10,871 |  | 11,011
Other Income Tax Expense (Benefit), Continuing Operations |  |  |  |  |  |  |  |  | (12,655) | 3,325 |  | 5,553
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 22,992 | 7,546 |  | 5,458
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 12,798 | (626) |  | 6,589
Net income |  |  |  |  |  |  |  |  | 35,790 | 6,920 |  | 12,047
Discontinued Operation, Tax Effect of Discontinued Operation |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Less net income attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Net income (loss) attributable to Oppenheimer Holdings Inc. |  |  |  |  |  |  |  |  | 35,790 | 6,920 |  | 12,047
Other comprehensive income |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Total comprehensive income |  |  |  |  |  |  |  |  | 35,790 | 6,920 |  | 12,047
Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |
Commissions |  |  |  |  |  |  |  |  | 336,620 | 377,317 |  | 417,559
Advisory fees |  |  |  |  |  |  |  |  | 323,114 | 271,763 |  | 282,633
Investment banking |  |  |  |  |  |  |  |  | 81,215 | 81,011 |  | 102,540
Interest |  |  |  |  |  |  |  |  | 48,548 | 47,804 |  | 49,056
Principal transactions, net |  |  |  |  |  |  |  |  | 23,256 | 20,465 |  | 15,244
Other |  |  |  |  |  |  |  |  | 112,962 | 62,201 |  | 33,173
Total revenue |  |  |  |  |  |  |  |  | 925,715 | 860,561 |  | 900,205
EXPENSES |  |  |  |  |  |  |  |  |  |  |  |
Compensation and related expenses |  |  |  |  |  |  |  |  | 600,901 | 583,469 |  | 609,635
Communications and technology |  |  |  |  |  |  |  |  | 71,818 | 70,266 |  | 66,407
Occupancy and equipment costs |  |  |  |  |  |  |  |  | 61,523 | 61,116 |  | 63,142
Clearing and exchange fees |  |  |  |  |  |  |  |  | 23,545 | 25,126 |  | 26,022
Interest |  |  |  |  |  |  |  |  | 24,253 | 16,709 |  | 13,465
Other |  |  |  |  |  |  |  |  | 114,192 | 120,261 |  | 118,858
Total expenses |  |  |  |  |  |  |  |  | 896,232 | 876,947 |  | 897,529
Income (loss) before income taxes from continuing operations |  |  |  |  |  |  |  |  | 29,483 | (16,386) |  | 2,676
Other Income Tax Expense (Benefit), Continuing Operations |  |  |  |  |  |  |  |  | 17,631 | (7,291) |  | 883
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 11,852 | (9,095) |  | 1,793
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 2,071 | 17,339 |  | 9,139
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Net income |  |  |  |  |  |  |  |  | 12,982 | 1,026 |  | 7,525
Discontinued Operation, Tax Effect of Discontinued Operation |  |  |  |  |  |  |  |  | 941 | 7,218 |  | 3,407
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 1,130 | 10,121 |  | 5,732
Less net income attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  | 184 | 1,652 |  | 936
Net income (loss) attributable to Oppenheimer Holdings Inc. |  |  |  |  |  |  |  |  | 12,798 | (626) |  | 6,589
Other comprehensive income |  |  |  |  |  |  |  |  | 2,263 | 220 |  | 17
Total comprehensive income |  |  |  |  |  |  |  |  | 15,061 | (406) |  | 6,606
Parent |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  |  |  |  |
Commissions |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Advisory fees |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Investment banking |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Interest |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Principal transactions, net |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Other |  |  |  |  |  |  |  |  | 22 | 0 |  | 0
Total revenue |  |  |  |  |  |  |  |  | 22 | 0 |  | 0
EXPENSES |  |  |  |  |  |  |  |  |  |  |  |
Compensation and related expenses |  |  |  |  |  |  |  |  | 1,237 | 1,241 |  | 1,185
Communications and technology |  |  |  |  |  |  |  |  | 160 | 124 |  | 142
Occupancy and equipment costs |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Clearing and exchange fees |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Interest |  |  |  |  |  |  |  |  | 13,740 | 13,125 |  | 13,125
Other |  |  |  |  |  |  |  |  | 4,969 | 1,887 |  | 1,663
Total expenses |  |  |  |  |  |  |  |  | 20,106 | 16,377 |  | 16,115
Income (loss) before income taxes from continuing operations |  |  |  |  |  |  |  |  | (20,084) | (16,377) |  | (16,115)
Other Income Tax Expense (Benefit), Continuing Operations |  |  |  |  |  |  |  |  | (7,110) | (8,296) |  | (6,030)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | (12,974) | (8,081) |  | (10,085)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 35,790 | 6,920 |  | 12,047
Net income |  |  |  |  |  |  |  |  | 22,816 | (1,161) |  | 1,962
Discontinued Operation, Tax Effect of Discontinued Operation |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Less net income attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Net income (loss) attributable to Oppenheimer Holdings Inc. |  |  |  |  |  |  |  |  | 22,816 | (1,161) |  | 1,962
Other comprehensive income |  |  |  |  |  |  |  |  | 0 | 0 |  | 0
Total comprehensive income |  |  |  |  |  |  |  |  | $ 22,816 | $ (1,161) |  | $ 1,962
[1] | (Expressed in thousands)Parent Guarantorsubsidiaries Non-guarantorSubsidiaries Eliminations ConsolidatedREVENUES Commissions$— $— $377,317 $— $377,317Advisory fees— 1,571 271,763 (4,215) 269,119Investment banking— — 81,011 — 81,011Interest— 10,242 47,804 (10,397) 47,649Principal transactions, net— 16 20,465 — 20,481Other— 326 62,201 (325) 62,202Total revenue— 12,155 860,561 (14,937) 857,779EXPENSES Compensation and related expenses1,241 — 583,469 — 584,710Communications and technology124 — 70,266 — 70,390Occupancy and equipment costs— — 61,116 (325) 60,791Clearing and exchange fees— — 25,126 — 25,126Interest13,125 — 16,709 (10,397) 19,437Other1,887 1,284 120,261 (4,215) 119,217Total expenses16,377 1,284 876,947 (14,937) 879,671Income (loss) before income taxes(16,377) 10,871 (16,386) — (21,892)Income taxes(8,296) 3,325 (7,291) — (12,262)Net income (loss) from continuing operations(8,081) 7,546 (9,095) — (9,630) Discontinued operations Income from discontinued operations— — 17,339 — 17,339Income taxes— — 7,218 — 7,218Net income from discontinued operations— — 10,121 — 10,121 Equity in earnings of subsidiaries6,920 (626) — (6,294) —Net income (loss)(1,161) 6,920 1,026 (6,294) 491Less net income attributable to noncontrolling interest, net of tax— — 1,652 — 1,652Net income (loss) attributable to Oppenheimer Holdings Inc.(1,161) 6,920 (626) (6,294) (1,161)Other comprehensive income— — 220 — 220Total comprehensive income (loss)$(1,161) $6,920 $(406) $(6,294) $(941)

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