v3.23.3
Portfolio Investments - Portfolio of Investments by Industry (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Schedule of Investments [Line Items]    
Investment owned, at cost $ 3,044,119 $ 2,617,754
Investments at fair value $ 2,892,420 $ 2,494,111
Investment owned, percent of net assets 190.82% 200.24%
Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 100.00% 100.00%
Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 2,892,420 $ 2,494,111
Investment owned, percent of net assets 190.82% 200.24%
Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 100.00% 100.00%
Application Software    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 468,483 $ 391,938
Application Software | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 15.39% 14.98%
Application Software | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 455,719 $ 384,589
Investment owned, percent of net assets 30.03% 30.87%
Application Software | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 15.73% 15.43%
Multi-Sector Holdings    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 219,469 $ 195,766
Multi-Sector Holdings | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 7.21% 7.48%
Multi-Sector Holdings | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 193,431 $ 167,248
Investment owned, percent of net assets 12.76% 13.43%
Multi-Sector Holdings | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 6.69% 6.71%
Data Processing & Outsourced Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 133,410 $ 120,477
Data Processing & Outsourced Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 4.38% 4.60%
Data Processing & Outsourced Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 125,259 $ 111,335
Investment owned, percent of net assets 8.26% 8.94%
Data Processing & Outsourced Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 4.33% 4.46%
Biotechnology    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 126,349 $ 109,960
Biotechnology | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 4.15% 4.20%
Biotechnology | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 125,678 $ 108,465
Investment owned, percent of net assets 8.29% 8.71%
Biotechnology | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 4.35% 4.35%
Health Care Technology    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 106,915 $ 100,084
Health Care Technology | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 3.51% 3.82%
Health Care Technology | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 95,404 $ 97,315
Investment owned, percent of net assets 6.29% 7.81%
Health Care Technology | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 3.30% 3.90%
Industrial Machinery & Supplies & Components    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 99,511 $ 81,787
Industrial Machinery & Supplies & Components | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 3.27% 3.12%
Industrial Machinery & Supplies & Components | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 98,352 $ 81,008
Investment owned, percent of net assets 6.49% 6.50%
Industrial Machinery & Supplies & Components | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 3.40% 3.25%
Pharmaceuticals    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 84,948 $ 126,508
Pharmaceuticals | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.79% 4.83%
Pharmaceuticals | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 80,455 $ 119,511
Investment owned, percent of net assets 5.31% 9.59%
Pharmaceuticals | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.78% 4.79%
Real Estate Operating Companies    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 83,754 $ 47,585
Real Estate Operating Companies | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.75% 1.82%
Real Estate Operating Companies | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 82,463 $ 48,062
Investment owned, percent of net assets 5.44% 3.86%
Real Estate Operating Companies | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.85% 1.93%
Broadline Retail    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 83,290 $ 67,926
Broadline Retail | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.74% 2.59%
Broadline Retail | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 69,040 $ 70,419
Investment owned, percent of net assets 4.55% 5.65%
Broadline Retail | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.39% 2.82%
Health Care Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 81,560 $ 58,674
Health Care Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.68% 2.24%
Health Care Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 66,683 $ 45,943
Investment owned, percent of net assets 4.40% 3.69%
Health Care Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.31% 1.84%
Specialized Finance    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 73,035 $ 80,864
Specialized Finance | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.40% 3.09%
Specialized Finance | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 69,590 $ 73,087
Investment owned, percent of net assets 4.59% 5.87%
Specialized Finance | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.41% 2.93%
Personal Care Products    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 68,146 $ 53,214
Personal Care Products | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.24% 2.03%
Personal Care Products | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 59,928 $ 50,150
Investment owned, percent of net assets 3.95% 4.03%
Personal Care Products | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.07% 2.01%
Fertilizers & Agricultural Chemicals    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 64,720 $ 49,301
Fertilizers & Agricultural Chemicals | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.13% 1.88%
Fertilizers & Agricultural Chemicals | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 63,185 $ 51,972
Investment owned, percent of net assets 4.17% 4.17%
Fertilizers & Agricultural Chemicals | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.18% 2.08%
Environmental & Facilities Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 63,064 $ 20,857
Environmental & Facilities Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.07% 0.80%
Environmental & Facilities Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 62,413 $ 20,585
Investment owned, percent of net assets 4.12% 1.65%
Environmental & Facilities Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.16% 0.83%
Health Care Distributors    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 62,044 $ 57,112
Health Care Distributors | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.04% 2.18%
Health Care Distributors | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 60,865 $ 54,662
Investment owned, percent of net assets 4.02% 4.39%
Health Care Distributors | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.10% 2.19%
Diversified Financial Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 61,725 $ 29,300
Diversified Financial Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.03% 1.12%
Diversified Financial Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 60,003 $ 24,326
Investment owned, percent of net assets 3.96% 1.95%
Diversified Financial Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.07% 0.98%
Internet Services & Infrastructure    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 60,934 $ 54,095
Internet Services & Infrastructure | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.00% 2.07%
Internet Services & Infrastructure | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 60,579 $ 53,797
Investment owned, percent of net assets 4.00% 4.32%
Internet Services & Infrastructure | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 2.09% 2.16%
Automotive Retail    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 57,596 $ 59,254
Automotive Retail | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.89% 2.26%
Automotive Retail | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 55,805 $ 57,629
Investment owned, percent of net assets 3.68% 4.63%
Automotive Retail | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.93% 2.31%
Airport Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 55,961 $ 43,322
Airport Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.84% 1.65%
Airport Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 54,453 $ 42,883
Investment owned, percent of net assets 3.59% 3.44%
Airport Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.88% 1.72%
Metal, Glass & Plastic Containers    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 55,530 $ 47,704
Metal, Glass & Plastic Containers | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.82% 1.82%
Metal, Glass & Plastic Containers | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 53,459 $ 47,599
Investment owned, percent of net assets 3.53% 3.82%
Metal, Glass & Plastic Containers | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.85% 1.91%
Home Improvement Retail    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 54,236 $ 45,802
Home Improvement Retail | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.78% 1.75%
Home Improvement Retail | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 53,168 $ 45,421
Investment owned, percent of net assets 3.51% 3.65%
Home Improvement Retail | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.84% 1.82%
Insurance Brokers    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 52,856 $ 35,628
Insurance Brokers | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.74% 1.36%
Insurance Brokers | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 53,050 $ 33,081
Investment owned, percent of net assets 3.50% 2.66%
Insurance Brokers | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.83% 1.33%
Aerospace & Defense    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 51,797 $ 61,963
Aerospace & Defense | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.70% 2.37%
Aerospace & Defense | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 51,862 $ 61,881
Investment owned, percent of net assets 3.42% 4.97%
Aerospace & Defense | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.79% 2.48%
Diversified Metals & Mining    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 49,842 $ 0
Diversified Metals & Mining | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.64% 0.00%
Diversified Metals & Mining | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 49,869 $ 0
Investment owned, percent of net assets 3.29% 0.00%
Diversified Metals & Mining | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.72% 0.00%
Auto Parts & Equipment    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 48,536 $ 12,474
Auto Parts & Equipment | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.59% 0.48%
Auto Parts & Equipment | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 49,148 $ 11,469
Investment owned, percent of net assets 3.24% 0.92%
Auto Parts & Equipment | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.70% 0.46%
Real Estate Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 44,717 $ 40,243
Real Estate Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.47% 1.54%
Real Estate Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 43,886 $ 39,573
Investment owned, percent of net assets 2.90% 3.18%
Real Estate Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.52% 1.59%
Soft Drinks & Non-alcoholic Beverages    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 42,628 $ 0
Soft Drinks & Non-alcoholic Beverages | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.40% 0.00%
Soft Drinks & Non-alcoholic Beverages | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 42,391 $ 0
Investment owned, percent of net assets 2.80% 0.00%
Soft Drinks & Non-alcoholic Beverages | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.47% 0.00%
Other Specialty Retail    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 41,088 $ 0
Other Specialty Retail | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.35% 0.00%
Other Specialty Retail | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 41,115 $ 0
Investment owned, percent of net assets 2.71% 0.00%
Other Specialty Retail | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.42% 0.00%
Leisure Facilities    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 39,076 $ 39,768
Leisure Facilities | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.28% 1.52%
Leisure Facilities | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 36,963 $ 39,258
Investment owned, percent of net assets 2.44% 3.15%
Leisure Facilities | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.28% 1.57%
Specialty Chemicals    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 38,640 $ 37,319
Specialty Chemicals | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.27% 1.43%
Specialty Chemicals | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 38,615 $ 33,969
Investment owned, percent of net assets 2.55% 2.73%
Specialty Chemicals | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.34% 1.36%
Distributors    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 37,666 $ 25,278
Distributors | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.24% 0.97%
Distributors | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 37,311 $ 24,494
Investment owned, percent of net assets 2.46% 1.97%
Distributors | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.29% 0.98%
Electrical Components & Equipment    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 32,440 $ 33,814
Electrical Components & Equipment | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.07% 1.29%
Electrical Components & Equipment | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 32,573 $ 32,933
Investment owned, percent of net assets 2.15% 2.64%
Electrical Components & Equipment | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 1.13% 1.32%
Advertising    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 25,597 $ 28,245
Advertising | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.84% 1.08%
Advertising | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 11,955 $ 26,948
Investment owned, percent of net assets 0.79% 2.16%
Advertising | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.41% 1.08%
Passenger Airlines    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 24,920 $ 0
Passenger Airlines | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.82% 0.00%
Passenger Airlines | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 27,512 $ 0
Investment owned, percent of net assets 1.82% 0.00%
Passenger Airlines | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.95% 0.00%
Real Estate Development    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 23,965 $ 0
Real Estate Development | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.79% 0.00%
Real Estate Development | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 23,679 $ 0
Investment owned, percent of net assets 1.56% 0.00%
Real Estate Development | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.82% 0.00%
Home Furnishings    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 23,859 $ 19,550
Home Furnishings | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.78% 0.75%
Home Furnishings | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 19,954 $ 18,188
Investment owned, percent of net assets 1.32% 1.46%
Home Furnishings | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.69% 0.73%
Diversified Support Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 23,435 $ 37,992
Diversified Support Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.77% 1.45%
Diversified Support Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 23,352 $ 36,712
Investment owned, percent of net assets 1.54% 2.95%
Diversified Support Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.81% 1.47%
Gold    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 23,310 $ 0
Gold | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.77% 0.00%
Gold | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 23,328 $ 0
Investment owned, percent of net assets 1.54% 0.00%
Gold | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.81% 0.00%
Systems Software    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 23,111 $ 14,890
Systems Software | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.76% 0.57%
Systems Software | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 21,968 $ 12,834
Investment owned, percent of net assets 1.45% 1.03%
Systems Software | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.76% 0.51%
Health Care Equipment    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 22,441 $ 24,353
Health Care Equipment | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.74% 0.93%
Health Care Equipment | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 22,436 $ 24,161
Investment owned, percent of net assets 1.48% 1.94%
Health Care Equipment | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.78% 0.97%
Construction & Engineering    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 22,102 $ 60,996
Construction & Engineering | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.73% 2.33%
Construction & Engineering | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 21,903 $ 61,188
Investment owned, percent of net assets 1.45% 4.91%
Construction & Engineering | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.76% 2.45%
Oil & Gas Storage & Transportation    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 22,042 $ 22,290
Oil & Gas Storage & Transportation | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.72% 0.85%
Oil & Gas Storage & Transportation | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 16,040 $ 20,853
Investment owned, percent of net assets 1.06% 1.67%
Oil & Gas Storage & Transportation | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.55% 0.84%
Interactive Media & Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 19,013 $ 0
Interactive Media & Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.62% 0.00%
Interactive Media & Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 19,199 $ 0
Investment owned, percent of net assets 1.27% 0.00%
Interactive Media & Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.66% 0.00%
Integrated Telecommunication Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 18,801 $ 34,628
Integrated Telecommunication Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.62% 1.32%
Integrated Telecommunication Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 16,492 $ 32,201
Investment owned, percent of net assets 1.09% 2.59%
Integrated Telecommunication Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.57% 1.29%
Hotels, Resorts & Cruise Lines    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 17,195 $ 13,960
Hotels, Resorts & Cruise Lines | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.56% 0.53%
Hotels, Resorts & Cruise Lines | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 16,991 $ 13,985
Investment owned, percent of net assets 1.12% 1.12%
Hotels, Resorts & Cruise Lines | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.59% 0.56%
Consumer Finance    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 16,440 $ 14,492
Consumer Finance | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.54% 0.55%
Consumer Finance | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 15,087 $ 13,284
Investment owned, percent of net assets 1.00% 1.07%
Consumer Finance | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.52% 0.53%
Education Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 13,871 $ 9,080
Education Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.46% 0.35%
Education Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 13,618 $ 8,582
Investment owned, percent of net assets 0.90% 0.69%
Education Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.47% 0.34%
Restaurants    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 12,603 $ 9,338
Restaurants | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.41% 0.36%
Restaurants | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 12,464 $ 8,692
Investment owned, percent of net assets 0.82% 0.70%
Restaurants | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.43% 0.35%
Movies & Entertainment    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 12,188 $ 26,161
Movies & Entertainment | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.40% 1.00%
Movies & Entertainment | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 11,865 $ 26,645
Investment owned, percent of net assets 0.78% 2.14%
Movies & Entertainment | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.41% 1.07%
Health Care Supplies    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 11,646 $ 36,471
Health Care Supplies | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.38% 1.39%
Health Care Supplies | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 11,363 $ 36,577
Investment owned, percent of net assets 0.75% 2.94%
Health Care Supplies | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.39% 1.47%
Food Distributors    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 5,897 $ 4,646
Food Distributors | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.19% 0.18%
Food Distributors | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 5,166 $ 3,367
Investment owned, percent of net assets 0.34% 0.27%
Food Distributors | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.18% 0.13%
Apparel Retail    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 4,999 $ 5,268
Apparel Retail | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.16% 0.20%
Apparel Retail | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 5,002 $ 5,223
Investment owned, percent of net assets 0.33% 0.42%
Apparel Retail | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.17% 0.21%
Air Freight & Logistics    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 4,925 $ 7,295
Air Freight & Logistics | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.16% 0.28%
Air Freight & Logistics | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 4,263 $ 6,405
Investment owned, percent of net assets 0.28% 0.51%
Air Freight & Logistics | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.15% 0.26%
Integrated Oil & Gas    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 4,894 $ 4,866
Integrated Oil & Gas | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.16% 0.19%
Integrated Oil & Gas | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 4,785 $ 4,872
Investment owned, percent of net assets 0.32% 0.39%
Integrated Oil & Gas | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.17% 0.20%
Research & Consulting Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 4,871 $ 9,187
Research & Consulting Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.16% 0.35%
Research & Consulting Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 4,831 $ 8,573
Investment owned, percent of net assets 0.32% 0.69%
Research & Consulting Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.17% 0.34%
Cable & Satellite    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 4,619 $ 20,716
Cable & Satellite | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.15% 0.79%
Cable & Satellite | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 4,546 $ 19,576
Investment owned, percent of net assets 0.30% 1.57%
Cable & Satellite | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.16% 0.78%
Other Specialized REITs    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 4,379 $ 0
Other Specialized REITs | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.14% 0.00%
Other Specialized REITs | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 3,198 $ 0
Investment owned, percent of net assets 0.21% 0.00%
Other Specialized REITs | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.11% 0.00%
Paper & Plastic Packaging Products & Materials    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 3,254 $ 0
Paper & Plastic Packaging Products & Materials | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.11% 0.00%
Paper & Plastic Packaging Products & Materials | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 3,061 $ 0
Investment owned, percent of net assets 0.20% 0.00%
Paper & Plastic Packaging Products & Materials | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.11% 0.00%
Housewares & Specialties    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 2,908 $ 2,293
Housewares & Specialties | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.10% 0.09%
Housewares & Specialties | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 2,808 $ 2,456
Investment owned, percent of net assets 0.19% 0.20%
Housewares & Specialties | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.10% 0.10%
Leisure Products    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 2,055 $ 0
Leisure Products | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.07% 0.00%
Leisure Products | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 2,063 $ 0
Investment owned, percent of net assets 0.14% 0.00%
Leisure Products | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.07% 0.00%
Technology Distributors    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 813 $ 3,163
Technology Distributors | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.03% 0.12%
Technology Distributors | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 776 $ 2,997
Investment owned, percent of net assets 0.05% 0.24%
Technology Distributors | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.03% 0.12%
Soft Drinks    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 34,272
Soft Drinks | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 1.31%
Soft Drinks | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 33,670
Investment owned, percent of net assets 0.00% 2.70%
Soft Drinks | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 1.35%
IT Consulting & Other Services    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 11,697
IT Consulting & Other Services | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.45%
IT Consulting & Other Services | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 8,596
Investment owned, percent of net assets 0.00% 0.69%
IT Consulting & Other Services | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.34%
Oil & Gas Refining & Marketing    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 8,627
Oil & Gas Refining & Marketing | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.33%
Oil & Gas Refining & Marketing | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 8,604
Investment owned, percent of net assets 0.00% 0.69%
Oil & Gas Refining & Marketing | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.34%
Trading Companies & Distributors    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 7,628
Trading Companies & Distributors | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.29%
Trading Companies & Distributors | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 5,567
Investment owned, percent of net assets 0.00% 0.45%
Trading Companies & Distributors | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.22%
Apparel, Accessories & Luxury Goods    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 5,165
Apparel, Accessories & Luxury Goods | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.20%
Specialized REITs    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 4,318
Specialized REITs | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.16%
Specialized REITs | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 3,264
Investment owned, percent of net assets 0.00% 0.26%
Specialized REITs | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.13%
Diversified Banks    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 3,515
Diversified Banks | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.13%
Diversified Banks | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 3,402
Investment owned, percent of net assets 0.00% 0.27%
Diversified Banks | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.14%
Construction Materials    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 2,331
Construction Materials | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.09%
Construction Materials | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 1,934
Investment owned, percent of net assets 0.00% 0.16%
Construction Materials | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.08%
Electronic Components    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 2,092
Electronic Components | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.08%
Electronic Components | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 1,890
Investment owned, percent of net assets 0.00% 0.15%
Electronic Components | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.08%
Alternative Carriers    
Schedule of Investments [Line Items]    
Investment owned, at cost $ 0 $ 212
Alternative Carriers | Investment Owned, At Cost | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.01%
Alternative Carriers | Investment Owned, At Fair Value    
Schedule of Investments [Line Items]    
Investments at fair value $ 0 $ 201
Investment owned, percent of net assets 0.00% 0.02%
Alternative Carriers | Investment Owned, At Fair Value | Investment Sector Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk 0.00% 0.01%