v3.8.0.1

Consolidated Condensed Schedule Of Investments (Investments Sold Short) - USD ($) shares in Thousands, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investments sold short, at fair value- |  | $ (675,650) |  | $ (584,896) |
Proceeds from investments sold short |  | $ 672,506 |  | $ 589,429 |
TBA - Fixed Rate Agency Securities Sold Short [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (74.71%) | [1],[2],[3] | (62.77%) | [4],[5],[6]
Current Principal/Notional Amount |  | $ (447,590) |  | $ (384,155) |
Investments sold short, at fair value- |  | (470,487) | [1],[3] | (404,728) | [4],[6]
Proceeds from investments sold short |  | (471,204) | [1],[3] | (404,967) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (65,000) | [1],[3] | $ (50,930) | [4],[6]
Rate |  | 4.50% | [1],[3] | 4.50% | [4],[6]
Investments maturity date |  | 2017-11 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (69,695) | [1],[3] | $ (54,748) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4 Point 00 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (64,000) | [1],[3] | $ (87,767) | [4],[6]
Rate |  | 4.00% | [1],[3] | 4.00% | [4],[6]
Investments maturity date |  | 2017-11 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (67,280) | [1],[3] | $ (92,210) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (60,000) | [1],[3] | $ (26,000) | [4],[6]
Rate |  | 4.00% | [1],[3] | 4.00% | [4],[6]
Investments maturity date |  | 2017-11 | [1],[3] | 2017-02 | [4],[6]
Investments sold short, at fair value- |  | $ (63,077) | [1],[3] | $ (27,295) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (45,188) | [1],[3] | $ (24,352) | [4],[6]
Rate |  | 3.50% | [1],[3] | 3.50% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (46,588) | [1],[3] | $ (24,960) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4 Point 00 Percent 201710 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [1],[3] | $ (43,187) |  |  |
Rate | [1],[3] | 4.00% |  |  |
Investments maturity date | [1],[3] | 2017-10 |  |  |
Investments sold short, at fair value- | [1],[3] | $ (45,469) |  |  |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4 Point 50 Percent 201710 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [1],[3] | $ (35,730) |  |  |
Rate | [1],[3] | 4.50% |  |  |
Investments maturity date | [1],[3] | 2017-10 |  |  |
Investments sold short, at fair value- | [1],[3] | $ (38,352) |  |  |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 3 Point 50 Percent 201711 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [1],[3] | $ (36,000) |  |  |
Rate | [1],[3] | 3.50% |  |  |
Investments maturity date | [1],[3] | 2017-11 |  |  |
Investments sold short, at fair value- | [1],[3] | $ (37,049) |  |  |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4 Point 00 Percent 201710 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [1],[3] | $ (23,467) |  |  |
Rate | [1],[3] | 4.00% |  |  |
Investments maturity date | [1],[3] | 2017-10 |  |  |
Investments sold short, at fair value- | [1],[3] | $ (24,705) |  |  |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (21,520) | [1],[3] | $ (20,740) | [4],[6]
Rate |  | 3.00% | [1],[3] | 3.00% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (22,113) | [1],[3] | $ (21,285) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 4 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (15,770) |
Rate | [4],[6] |  |  | 4.50% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (17,058) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 3 Point 50 Percent 201710 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [1],[3] | $ (12,810) |  |  |
Rate | [1],[3] | 3.50% |  |  |
Investments maturity date | [1],[3] | 2017-10 |  |  |
Investments sold short, at fair value- | [1],[3] | $ (13,317) |  |  |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 5 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (6,860) | [1],[3] | $ (6,860) | [4],[6]
Rate |  | 5.50% | [1],[3] | 5.50% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (7,591) | [1],[3] | $ (7,622) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (6,951) | [1],[3] | $ (23,151) | [4],[6]
Rate |  | 4.50% | [1],[3] | 4.50% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (7,453) | [1],[3] | $ (24,840) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 3 Point 00 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (7,112) | [1],[3] | $ (4,612) | [4],[6]
Rate |  | 3.00% | [1],[3] | 3.00% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (7,135) | [1],[3] | $ (4,584) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 3 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [1],[3] | $ (6,700) |  |  |
Rate | [1],[3] | 3.50% |  |  |
Investments maturity date | [1],[3] | 2017-10 |  |  |
Investments sold short, at fair value- | [1],[3] | $ (6,978) |  |  |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 5 Point 00 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (5,680) | [1],[3] | $ (31,620) | [4],[6]
Rate |  | 5.00% | [1],[3] | 5.00% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (6,199) | [1],[3] | $ (34,426) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 3 Point 00 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (5,515) | [1],[3] | $ (3,155) | [4],[6]
Rate |  | 3.00% | [1],[3] | 3.00% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (5,532) | [1],[3] | $ (3,134) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (15 Year) 3 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (1,870) | [1],[3] | $ (8,790) | [4],[6]
Rate |  | 3.50% | [1],[3] | 3.50% | [4],[6]
Investments maturity date |  | 2017-10 | [1],[3] | 2017-01 | [4],[6]
Investments sold short, at fair value- |  | $ (1,954) | [1],[3] | $ (9,169) | [4],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 3 Point 50 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (21,940) |
Rate | [4],[6] |  |  | 3.50% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (22,819) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 4 Point 00 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (1,700) |
Rate | [4],[6] |  |  | 4.00% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (1,806) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (15 Year) 3 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (13,510) |
Rate | [4],[6] |  |  | 3.00% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (13,869) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 4 Percent [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (11,170) |
Rate | [4],[6] |  |  | 4.00% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (11,494) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.00% 2017 01 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (20,558) |
Rate | [4],[6] |  |  | 4.00% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (21,611) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (6,500) |
Rate | [4],[6] |  |  | 3.00% |
Investments maturity date | [4],[6] |  |  | 2017-01 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (6,568) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (2,530) |
Rate | [4],[6] |  |  | 3.50% |
Investments maturity date | [4],[6] |  |  | 2017-02 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (2,633) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 3.50% 2017 02 [Member] | Mortgage-related Residential [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [4],[6] |  |  | $ (2,500) |
Rate | [4],[6] |  |  | 3.50% |
Investments maturity date | [4],[6] |  |  | 2017-02 |
Investments sold short, at fair value- | [4],[6] |  |  | $ (2,597) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (55.62%) |  | (32.67%) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (16.98%) |  | (22.21%) |
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (2.11%) |  | (7.89%) |
US Government Debt Securities [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (8.01%) | [2],[3] | (10.82%) | [5],[6]
Investments sold short, at fair value- |  | $ (50,467) | [3] | $ (69,762) | [6]
Proceeds from investments sold short |  | (50,523) | [3] | (69,946) | [6]
US Government Debt Securities [Member] | U.S. Treasury Note, 2.25 Percent, Maturity Date 2027 02 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (30,501) |  |  |
Rate | [3] | 2.25% |  |  |
Investments maturity date | [3] | 2027-02 |  |  |
Investments sold short, at fair value- | [3] | $ (30,320) |  |  |
US Government Debt Securities [Member] | US Treasury Note, 1.75 Percent, Maturity Date 2022 05 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (6,560) |  |  |
Rate | [3] | 1.75% |  |  |
Investments maturity date | [3] | 2022-05 |  |  |
Investments sold short, at fair value- | [3] | $ (6,517) |  |  |
US Government Debt Securities [Member] | U.S. Treasury Note, 2.00 Percent, Maturity Date 2026 11 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (5,633) | [3] | $ (48,133) | [6]
Rate |  | 2.00% | [3] | 2.00% | [6]
Investments maturity date |  | 2026-11 | [3] | 2026-11 | [6]
Investments sold short, at fair value- |  | $ (5,490) | [3] | $ (46,287) | [6]
US Government Debt Securities [Member] | U.S. Treasury Note, 2.25 Percent, Maturity Date 2027 08 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (4,715) |  |  |
Rate | [3] | 2.25% |  |  |
Investments maturity date | [3] | 2027-08 |  |  |
Investments sold short, at fair value- | [3] | $ (4,684) |  |  |
US Government Debt Securities [Member] | US Treasury Note, 2.38 Percent, Maturity Date 2027 02 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (1,869) |  |  |
Rate | [3] | 2.38% |  |  |
Investments maturity date | [3] | 2027-02 |  |  |
Investments sold short, at fair value- | [3] | $ (1,877) |  |  |
US Government Debt Securities [Member] | US Treasury Note, 1.63 Percent, Maturity Date 2022 08 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (1,350) |  |  |
Rate | [3] | 1.63% |  |  |
Investments maturity date | [3] | 2022-08 |  |  |
Investments sold short, at fair value- | [3] | $ (1,332) |  |  |
US Government Debt Securities [Member] | U.S. Treasury Bond, 2.25 Percent, Maturity Date 2046 08 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (281) |  |  |
Rate | [3] | 2.25% |  |  |
Investments maturity date | [3] | 2046-08 |  |  |
Investments sold short, at fair value- | [3] | $ (247) |  |  |
US Government Debt Securities [Member] | US Treasury Note, 1.38 Percent, Maturity Date 2021 04 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (1,305) |
Rate | [6] |  |  | 1.38% |
Investments maturity date | [6] |  |  | 2021-04 |
Investments sold short, at fair value- | [6] |  |  | $ (1,280) |
US Government Debt Securities [Member] | US Treasury Note, 1.25 Percent, Maturity Date 2021 10 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (800) |
Rate | [6] |  |  | 1.25% |
Investments maturity date | [6] |  |  | 2021-10 |
Investments sold short, at fair value- | [6] |  |  | $ (776) |
US Government Debt Securities [Member] | US Treasury Note, 1.13 Percent, Maturity Date 2021 07 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (549) |
Rate | [6] |  |  | 1.13% |
Investments maturity date | [6] |  |  | 2021-07 |
Investments sold short, at fair value- | [6] |  |  | $ (531) |
US Government Debt Securities [Member] | US Treasury Note, 1.13 Percent, Maturity Date 2021 09 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (1,968) |
Rate | [6] |  |  | 1.13% |
Investments maturity date | [6] |  |  | 2021-09 |
Investments sold short, at fair value- | [6] |  |  | $ (1,898) |
US Government Debt Securities [Member] | US Treasury Note, 1.50 Percent, Maturity Date 2026 08 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (12,160) |
Rate | [6] |  |  | 1.50% |
Investments maturity date | [6] |  |  | 2026-08 |
Investments sold short, at fair value- | [6] |  |  | $ (11,179) |
US Government Debt Securities [Member] | US Treasury Note, 1.75 Percent, Maturity Date 2021 11 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (4,726) |
Rate | [6] |  |  | 1.75% |
Investments maturity date | [6] |  |  | 2021-11 |
Investments sold short, at fair value- | [6] |  |  | $ (4,690) |
US Government Debt Securities [Member] | US Treasury Note, 1.13 Percent, Maturity Date 2021 08 [Member] | Government [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (3,230) |
Rate | [6] |  |  | 1.13% |
Investments maturity date | [6] |  |  | 2021-08 |
Investments sold short, at fair value- | [6] |  |  | $ (3,121) |
Foreign Government Debt Securities [Member] | Europe [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (11.11%) | [2],[3] | (9.72%) | [5],[6]
Investments sold short, at fair value- |  | $ (69,940) | [3] | $ (62,680) | [6]
Proceeds from investments sold short |  | (66,592) | [3] | (66,800) | [6]
Foreign Government Debt Securities [Member] | Sovereign Debt Securities [Member] | Government [Member] | Europe [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (23,262) | [3] | $ (20,754) | [6]
Investments maturity date |  | 2020-11 | [3] | 2020-11 | [6]
Investments sold short, at fair value- |  | $ (23,691) | [3] | $ (21,219) | [6]
Foreign Government Debt Securities [Member] | Sovereign Debt Securities [Member] | Government [Member] | Europe [Member] | Minimum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 0.25% | [3] | 0.25% | [6]
Foreign Government Debt Securities [Member] | Sovereign Debt Securities [Member] | Government [Member] | Europe [Member] | Maximum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 0.65% | [3] | 0.65% | [6]
Foreign Government Debt Securities [Member] | Spanish Sovereign Bond, 0.25 Percent [Member] | Government [Member] | Europe [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (16,260) | [3] | $ (14,507) | [6]
Rate |  | 0.25% | [3] | 0.25% | [6]
Investments maturity date |  | 2018-04 | [3] | 2018-04 | [6]
Investments sold short, at fair value- |  | $ (16,318) | [3] | $ (14,614) | [6]
Foreign Government Debt Securities [Member] | Spanish Sovereign Bond, 0.75 Percent [Member] | Government [Member] | Europe [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (10,285) | [3] | $ (9,176) | [6]
Rate |  | 0.75% | [3] | 0.75% | [6]
Investments maturity date |  | 2021-07 | [3] | 2021-07 | [6]
Investments sold short, at fair value- |  | $ (10,560) | [3] | $ (9,379) | [6]
Foreign Government Debt Securities [Member] | Spanish Sovereign Bond, 2.75 Percent [Member] | Government [Member] | Europe [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (9,328) | [3] | $ (8,322) | [6]
Rate |  | 2.75% | [3] | 2.75% | [6]
Investments maturity date |  | 2019-04 | [3] | 2019-04 | [6]
Investments sold short, at fair value- |  | $ (9,783) | [3] | $ (8,888) | [6]
Foreign Government Debt Securities [Member] | Spanish Sovereign Bond, 1.15 Percent [Member] | Government [Member] | Europe [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (9,254) | [3] | $ (8,257) | [6]
Rate |  | 1.15% | [3] | 1.15% | [6]
Investments maturity date |  | 2020-07 | [3] | 2020-07 | [6]
Investments sold short, at fair value- |  | $ (9,588) | [3] | $ (8,580) | [6]
Government debt [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (19.12%) | [2],[3] | (20.54%) | [5],[6]
Investments sold short, at fair value- |  | $ (120,407) | [3] | $ (132,442) | [6]
Proceeds from investments sold short |  | $ (117,115) | [3] | $ (136,746) | [6]
Common Stock Sold Short [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (2.25%) | [2],[3] | (1.26%) | [5],[6]
Investments sold short, at fair value- |  | $ (14,189) | [3] | $ (8,154) | [6]
Proceeds from investments sold short |  | (14,105) | [3] | (8,052) | [6]
Common Stock Sold Short [Member] | Exchange Traded Equity [Member] | Energy [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investments sold short, at fair value- | [3] | $ (313) |  |  |
Investment Sold, Not yet Purchased, Balance, Shares | [3] | (13) |  |  |
Common Stock Sold Short [Member] | Exchange Traded Equity [Member] | Financial [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investments sold short, at fair value- |  | $ (13,876) | [3] | $ (8,154) | [6]
Investment Sold, Not yet Purchased, Balance, Shares |  | (379) | [3] | (207) | [6]
Corporate Debt Sold Short [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (11.21%) | [2],[3] | (6.14%) | [5],[6]
Investments sold short, at fair value- |  | $ (70,567) | [3] | $ (39,572) | [6]
Proceeds from investments sold short |  | (70,082) | [3] | (39,664) | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Basic Materials [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (3,310) | [3] | (8,970) | [6]
Rate | [3] | 3.75% |  |  |
Investments maturity date | [3] | 2023-02 |  |  |
Investments sold short, at fair value- |  | $ (3,365) | [3] | $ (8,717) | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Basic Materials [Member] | North America [Member] | Minimum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate | [6] |  |  | 3.88% |
Investments maturity date | [6] |  |  | 2021-10 |
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Basic Materials [Member] | North America [Member] | Maximum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate | [6] |  |  | 5.13% |
Investments maturity date | [6] |  |  | 2023-03 |
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Communications [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | (17,690) | [3] | $ (8,750) | [6]
Investments sold short, at fair value- |  | $ (17,529) | [3] | $ (8,551) | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Communications [Member] | North America [Member] | Minimum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 4.25% | [3] | 5.25% | [6]
Investments maturity date |  | 2021-09 | [3] | 2021-07 | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Communications [Member] | North America [Member] | Maximum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 10.50% | [3] | 9.25% | [6]
Investments maturity date |  | 2024-11 | [3] | 2022-09 | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Consumer [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (23,600) | [3] | $ (8,930) | [6]
Investments sold short, at fair value- |  | $ (23,758) | [3] | $ (8,695) | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Consumer [Member] | North America [Member] | Minimum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 2.90% | [3] | 3.88% | [6]
Investments maturity date |  | 2019-04 | [3] | 2022-01 | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Consumer [Member] | North America [Member] | Maximum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 7.38% | [3] | 6.88% | [6]
Investments maturity date |  | 2026-05 | [3] | 2026-04 | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Energy [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (21,490) | [3] | $ (10,597) | [6]
Investments sold short, at fair value- |  | $ (21,138) | [3] | $ (10,041) | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Energy [Member] | North America [Member] | Minimum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 3.25% | [3] | 2.40% | [6]
Investments maturity date |  | 2022-04 | [3] | 2021-06 | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Energy [Member] | North America [Member] | Maximum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate |  | 8.00% | [3] | 8.00% | [6]
Investments maturity date |  | 2027-06 | [3] | 2025-01 | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Financial [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount |  | $ (3,440) | [3] | $ (1,130) | [6]
Rate | [6] |  |  | 4.13% |
Investments maturity date | [6] |  |  | 2022-02 |
Investments sold short, at fair value- |  | $ (3,653) | [3] | $ (1,121) | [6]
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Financial [Member] | North America [Member] | Minimum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate | [3] | 5.13% |  |  |
Investments maturity date | [3] | 2022-03 |  |  |
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Financial [Member] | North America [Member] | Maximum [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Rate | [3] | 5.25% |  |  |
Investments maturity date | [3] | 2024-09 |  |  |
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Technology Sector [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [3] | $ (1,050) |  |  |
Rate | [3] | 6.38% |  |  |
Investments maturity date | [3] | 2023-12 |  |  |
Investments sold short, at fair value- | [3] | $ (1,124) |  |  |
Corporate Debt Sold Short [Member] | Various Issuer [Member] | Utilities [Member] | North America [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Current Principal/Notional Amount | [6] |  |  | $ (2,430) |
Rate | [6] |  |  | 6.25% |
Investments maturity date | [6] |  |  | 2022-07 |
Investments sold short, at fair value- | [6] |  |  | $ (2,447) |
Investments Sold Short [Member] |  |  |  |  |
Investments Sold, Not yet Purchased [Line Items] |  |  |  |  |
Investment Sold, Not yet Purchased, Percent of Equity |  | (107.29%) | [2],[3] | (90.71%) | [5],[6]
Investments sold short, at fair value- |  | $ (675,650) | [3] | $ (584,896) | [6]
Proceeds from investments sold short |  | $ (672,506) | [3] | $ (589,429) | [6]
[1] | At September 30, 2017, the Company's short investments guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, and the Government National Mortgage Association, represented 55.62%, 16.98%, and 2.11% of Total Equity, respectively.
[2] | Classification percentages are based on Total Equity.
[3] | See Note 2 and Note 3 in Notes to Consolidated Financial Statements.
[4] | At December 31, 2016, the Company's short investments guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, and the Government National Mortgage Association, represented 32.67%, 22.21%, and 7.89% of Total Equity, respectively.
[5] | Classification percentages are based on Total Equity.
[6] | See Note 2 and Note 3 in Notes to Consolidated Financial Statements.

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