Gabelli Global Growth Fund (GGGAX) N-CSRS 6 Sep 24 Certified semi-annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	6 Months Ended
	Jun. 30, 2024
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	GAMCO GLOBAL SERIES FUNDS, INC
Entity Central Index Key	0000909504
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024

Shareholder Report

Shareholder Report	6 Months Ended
	Jun. 30, 2024 USD ($) Holding
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	GAMCO GLOBAL SERIES FUNDS, INC
Entity Central Index Key	0000909504
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024
C000002867
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Growth Fund
Class Name	Class AAA
Trading Symbol	GICPX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B19">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Growth Fund - Class AAA $50 0.90%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Growth Fund outperformed its broad-based benchmark, the MSCI AC World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Fund Classification. Economic data began to soften in the second quarter, suggesting tighter monetary policy may be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Growth Fund - Class AAA MSCI ACWI Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 10,193 10,071 10,299 6/16 9,673 9,695 10,038 6/17 11,444 11,516 11,973 6/18 13,814 12,752 13,636 6/19 15,226 13,484 14,998 6/20 17,768 13,768 16,666 6/21 24,183 19,175 22,931 6/22 17,090 16,155 17,173 6/23 21,194 18,825 20,525 6/24 27,982 22,474 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Growth Fund - Class AAA 24.36% 32.03% 12.94% 10.84% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 183,810,147
Holdings Count | Holding	43
Advisory Fees Paid, Amount	$ 397,996
InvestmentCompanyPortfolioTurnover	14%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $183,810,147 Number of Portfolio Holdings 43 Portfolio Turnover Rate 14% Management Fees $397,996
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Information Technology - Semiconductors, Hardware, and Equipment 22.3% Communication Services 17.9% Consumer Discretionary 13.4% Health Care 12.6% Information Technology - Software and Services 11.8% Financials 10.5% Industrials 5.8% Consumer Staples 3.1% Other Industry sectors 1.7% Other Assets and Liabilities (Net) 0.9%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 NVIDIA Corp. 10.8% Microsoft Corp. 5.9% Amazon.com Inc. 5.9% Meta Platforms Inc. 5.5% Alphabet Inc. 5.4% Netflix Inc. 4.7% Eli Lilly & Co. 4.6% Novo Nordisk A/S 3.6% LVMH Moet Hennessy Louis Vuitton SE 3.4% L'Oreal SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B39">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B40">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002869
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Growth Fund
Class Name	Class C
Trading Symbol	GGGCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B50">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Growth Fund - Class C $50 0.90%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Growth Fund outperformed its broad-based benchmark, the MSCI AC World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Fund Classification. Economic data began to soften in the second quarter, suggesting tighter monetary policy may be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Growth Fund - Class C MSCI ACWI Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 10,016 10,071 10,299 6/16 9,342 9,695 10,038 6/17 10,876 11,516 11,973 6/18 12,922 12,752 13,636 6/19 14,006 13,484 14,998 6/20 16,153 13,768 16,666 6/21 21,822 19,175 22,931 6/22 15,271 16,155 17,173 6/23 18,785 18,825 20,525 6/24 24,615 22,474 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Growth Fund - Class C 23.38% 31.03% 12.88% 10.39% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 183,810,147
Holdings Count | Holding	43
Advisory Fees Paid, Amount	$ 397,996
InvestmentCompanyPortfolioTurnover	14%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $183,810,147 Number of Portfolio Holdings 43 Portfolio Turnover Rate 14% Management Fees $397,996
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Information Technology - Semiconductors, Hardware, and Equipment 22.3% Communication Services 17.9% Consumer Discretionary 13.4% Health Care 12.6% Information Technology - Software and Services 11.8% Financials 10.5% Industrials 5.8% Consumer Staples 3.1% Other Industry sectors 1.7% Other Assets and Liabilities (Net) 0.9%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 NVIDIA Corp. 10.8% Microsoft Corp. 5.9% Amazon.com Inc. 5.9% Meta Platforms Inc. 5.5% Alphabet Inc. 5.4% Netflix Inc. 4.7% Eli Lilly & Co. 4.6% Novo Nordisk A/S 3.6% LVMH Moet Hennessy Louis Vuitton SE 3.4% L'Oreal SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B70">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B71">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000034309
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Growth Fund
Class Name	Class I
Trading Symbol	GGGIX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B81">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Growth Fund - Class I $50 0.90%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Growth Fund outperformed its broad-based benchmark, the MSCI AC World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Fund Classification. Economic data began to soften in the second quarter, suggesting tighter monetary policy may be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Growth Fund - Class I MSCI ACWI Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 10,258 10,071 10,299 6/16 9,805 9,695 10,038 6/17 11,681 11,516 11,973 6/18 14,184 12,752 13,636 6/19 15,677 13,484 14,998 6/20 18,310 13,768 16,666 6/21 24,919 19,175 22,931 6/22 17,612 16,155 17,173 6/23 21,846 18,825 20,525 6/24 28,850 22,474 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Growth Fund - Class I 24.36% 32.06% 12.97% 11.18% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 183,810,147
Holdings Count | Holding	43
Advisory Fees Paid, Amount	$ 397,996
InvestmentCompanyPortfolioTurnover	14%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $183,810,147 Number of Portfolio Holdings 43 Portfolio Turnover Rate 14% Management Fees $397,996
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Information Technology - Semiconductors, Hardware, and Equipment 22.3% Communication Services 17.9% Consumer Discretionary 13.4% Health Care 12.6% Information Technology - Software and Services 11.8% Financials 10.5% Industrials 5.8% Consumer Staples 3.1% Other Industry sectors 1.7% Other Assets and Liabilities (Net) 0.9%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 NVIDIA Corp. 10.8% Microsoft Corp. 5.9% Amazon.com Inc. 5.9% Meta Platforms Inc. 5.5% Alphabet Inc. 5.4% Netflix Inc. 4.7% Eli Lilly & Co. 4.6% Novo Nordisk A/S 3.6% LVMH Moet Hennessy Louis Vuitton SE 3.4% L'Oreal SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B101">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B102">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002866
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Growth Fund
Class Name	Class A
Trading Symbol	GGGAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Growth Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B112">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Growth Fund - Class A $50 0.90%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Growth Fund outperformed its broad-based benchmark, the MSCI AC World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Fund Classification. Economic data began to soften in the second quarter, suggesting tighter monetary policy may be having its intended effect. Separately, the artificial intelligence cycle has accelerated so far this year, and beneficiaries are emerging in the semiconductor and data center infrastructure sectors.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Growth Fund - Class A MSCI ACWI Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 9,603 10,071 10,299 6/16 9,672 9,695 10,038 6/17 11,442 11,516 11,973 6/18 13,811 12,752 13,636 6/19 15,218 13,484 14,998 6/20 17,760 13,768 16,666 6/21 24,171 19,175 22,931 6/22 17,079 16,155 17,173 6/23 21,184 18,825 20,525 6/24 27,968 22,474 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Growth Fund - Class A 17.20% 24.44% 11.61% 10.18% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 183,810,147
Holdings Count | Holding	43
Advisory Fees Paid, Amount	$ 397,996
InvestmentCompanyPortfolioTurnover	14%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $183,810,147 Number of Portfolio Holdings 43 Portfolio Turnover Rate 14% Management Fees $397,996
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Information Technology - Semiconductors, Hardware, and Equipment 22.3% Communication Services 17.9% Consumer Discretionary 13.4% Health Care 12.6% Information Technology - Software and Services 11.8% Financials 10.5% Industrials 5.8% Consumer Staples 3.1% Other Industry sectors 1.7% Other Assets and Liabilities (Net) 0.9%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 NVIDIA Corp. 10.8% Microsoft Corp. 5.9% Amazon.com Inc. 5.9% Meta Platforms Inc. 5.5% Alphabet Inc. 5.4% Netflix Inc. 4.7% Eli Lilly & Co. 4.6% Novo Nordisk A/S 3.6% LVMH Moet Hennessy Louis Vuitton SE 3.4% L'Oreal SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B132">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B133">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002875
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Content &amp; Connectivity Fund
Class Name	Class AAA
Trading Symbol	GABTX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Content &amp; Connectivity Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B143">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Content & Connectivity Fund - Class AAA $48 0.90%
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Content & Connectivity Fund outperformed its broad-based benchmark, MSCI AC World Index and underperformed its comparative benchmark, MSCI AC World Communication Services Index. The difference in performance was largely driven by the Fund’s lower weights in technology- and online-related mega-cap stocks, to avoid excessive concentration. Top contributors to our Fund included firms benefiting from strength and scale in digital advertising, rising demand for AI chips, solid wireless operating performance, or announced merger and acquisition transactions.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Content & Connectivity Fund - Class AAA MSCI ACWI Index MSCI AC World Communication Services Index 6/14 10,000 10,000 10,000 6/15 10,009 10,071 10,126 6/16 9,804 9,695 10,467 6/17 10,384 11,516 10,311 6/18 10,321 12,752 9,962 6/19 10,621 13,484 11,324 6/20 10,296 13,768 12,379 6/21 14,377 19,175 17,627 6/22 10,347 16,155 12,411 6/23 10,961 18,825 13,758 6/24 13,471 22,474 18,241
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Content & Connectivity Fund - Class AAA 13.38% 22.89% 4.87% 3.03% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI AC World Communication Services Index 20.56% 32.58% 10.00% 6.20%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 63,685,441
Holdings Count | Holding	49
Advisory Fees Paid, Amount	$ 44,001
InvestmentCompanyPortfolioTurnover	6%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $63,685,441 Number of Portfolio Holdings 49 Portfolio Turnover Rate 6% Management Fees $44,001
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Communication Services 73.8% Information Technology 7.9% Consumer Discretionary 7.7% Financials 6.3% Real Estate 4.2% U.S. Government Obligations 0.8% Other Assets and Liabilities (Net) (0.7)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 T-Mobile US Inc. 8.9% Alphabet Inc. 8.1% Meta Platforms Inc. 7.9% SoftBank Group Corp. 7.7% Prosus NV 5.3% Microsoft Corp. 4.2% Deutsche Telekom AG 4.0% United States Cellular Corp. 3.5% Anterix Inc. 3.1% Millicom International Cellular SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B163">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B164">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002877
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Content &amp; Connectivity Fund
Class Name	Class C
Trading Symbol	GTCCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Content &amp; Connectivity Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B174">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Content & Connectivity Fund - Class C $48 0.90%
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Content & Connectivity Fund outperformed its broad-based benchmark, MSCI AC World Index and underperformed its comparative benchmark, MSCI AC World Communication Services Index. The difference in performance was largely driven by the Fund’s lower weights in technology- and online-related mega-cap stocks, to avoid excessive concentration. Top contributors to our Fund included firms benefiting from strength and scale in digital advertising, rising demand for AI chips, solid wireless operating performance, or announced merger and acquisition transactions.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Content & Connectivity Fund - Class C MSCI ACWI Index MSCI AC World Communication Services Index 6/14 10,000 10,000 10,000 6/15 9,839 10,071 10,126 6/16 9,468 9,695 10,467 6/17 9,856 11,516 10,311 6/18 9,626 12,752 9,962 6/19 9,735 13,484 11,324 6/20 9,314 13,768 12,379 6/21 12,910 19,175 17,627 6/22 9,201 16,155 12,411 6/23 9,602 18,825 13,758 6/24 11,712 22,474 18,241
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Content & Connectivity Fund - Class C 12.91% 21.97% 4.70% 2.56% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI AC World Communication Services Index 20.56% 32.58% 10.00% 6.20%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 63,685,441
Holdings Count | Holding	49
Advisory Fees Paid, Amount	$ 44,001
InvestmentCompanyPortfolioTurnover	6%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $63,685,441 Number of Portfolio Holdings 49 Portfolio Turnover Rate 6% Management Fees $44,001
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Communication Services 73.8% Information Technology 7.9% Consumer Discretionary 7.7% Financials 6.3% Real Estate 4.2% U.S. Government Obligations 0.8% Other Assets and Liabilities (Net) (0.7)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 T-Mobile US Inc. 8.9% Alphabet Inc. 8.1% Meta Platforms Inc. 7.9% SoftBank Group Corp. 7.7% Prosus NV 5.3% Microsoft Corp. 4.2% Deutsche Telekom AG 4.0% United States Cellular Corp. 3.5% Anterix Inc. 3.1% Millicom International Cellular SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B194">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B195">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000034311
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Content &amp; Connectivity Fund
Class Name	Class I
Trading Symbol	GTTIX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Content &amp; Connectivity Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B205">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Content & Connectivity Fund - Class I $48 0.90%
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Content & Connectivity Fund outperformed its broad-based benchmark, MSCI AC World Index and underperformed its comparative benchmark, MSCI AC World Communication Services Index. The difference in performance was largely driven by the Fund’s lower weights in technology- and online-related mega-cap stocks, to avoid excessive concentration. Top contributors to our Fund included firms benefiting from strength and scale in digital advertising, rising demand for AI chips, solid wireless operating performance, or announced merger and acquisition transactions.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Content & Connectivity Fund - Class I MSCI ACWI Index MSCI AC World Communication Services Index 6/14 10,000 10,000 10,000 6/15 10,036 10,071 10,126 6/16 9,854 9,695 10,467 6/17 10,483 11,516 10,311 6/18 10,500 12,752 9,962 6/19 10,886 13,484 11,324 6/20 10,590 13,768 12,379 6/21 14,782 19,175 17,627 6/22 10,637 16,155 12,411 6/23 11,271 18,825 13,758 6/24 13,853 22,474 18,241
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Content & Connectivity Fund - Class I 13.37% 22.91% 4.94% 3.31% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI AC World Communication Services Index 20.56% 32.58% 10.00% 6.20%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 63,685,441
Holdings Count | Holding	49
Advisory Fees Paid, Amount	$ 44,001
InvestmentCompanyPortfolioTurnover	6%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $63,685,441 Number of Portfolio Holdings 49 Portfolio Turnover Rate 6% Management Fees $44,001
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Communication Services 73.8% Information Technology 7.9% Consumer Discretionary 7.7% Financials 6.3% Real Estate 4.2% U.S. Government Obligations 0.8% Other Assets and Liabilities (Net) (0.7)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 T-Mobile US Inc. 8.9% Alphabet Inc. 8.1% Meta Platforms Inc. 7.9% SoftBank Group Corp. 7.7% Prosus NV 5.3% Microsoft Corp. 4.2% Deutsche Telekom AG 4.0% United States Cellular Corp. 3.5% Anterix Inc. 3.1% Millicom International Cellular SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B225">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B226">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002874
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Content &amp; Connectivity Fund
Class Name	Class A
Trading Symbol	GTCAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Content &amp; Connectivity Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B236">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Content & Connectivity Fund - Class A $48 0.90%
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Content & Connectivity Fund outperformed its broad-based benchmark, MSCI AC World Index and underperformed its comparative benchmark, MSCI AC World Communication Services Index. The difference in performance was largely driven by the Fund’s lower weights in technology- and online-related mega-cap stocks, to avoid excessive concentration. Top contributors to our Fund included firms benefiting from strength and scale in digital advertising, rising demand for AI chips, solid wireless operating performance, or announced merger and acquisition transactions.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Content & Connectivity Fund - Class A MSCI ACWI Index MSCI AC World Communication Services Index 6/14 10,000 10,000 10,000 6/15 9,436 10,071 10,126 6/16 9,805 9,695 10,467 6/17 10,370 11,516 10,311 6/18 10,307 12,752 9,962 6/19 10,609 13,484 11,324 6/20 10,281 13,768 12,379 6/21 14,354 19,175 17,627 6/22 10,332 16,155 12,411 6/23 10,946 18,825 13,758 6/24 13,452 22,474 18,241
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Content & Connectivity Fund - Class A 6.84% 15.83% 3.63% 2.40% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI AC World Communication Services Index 20.56% 32.58% 10.00% 6.20%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 63,685,441
Holdings Count | Holding	49
Advisory Fees Paid, Amount	$ 44,001
InvestmentCompanyPortfolioTurnover	6%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $63,685,441 Number of Portfolio Holdings 49 Portfolio Turnover Rate 6% Management Fees $44,001
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Communication Services 73.8% Information Technology 7.9% Consumer Discretionary 7.7% Financials 6.3% Real Estate 4.2% U.S. Government Obligations 0.8% Other Assets and Liabilities (Net) (0.7)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 T-Mobile US Inc. 8.9% Alphabet Inc. 8.1% Meta Platforms Inc. 7.9% SoftBank Group Corp. 7.7% Prosus NV 5.3% Microsoft Corp. 4.2% Deutsche Telekom AG 4.0% United States Cellular Corp. 3.5% Anterix Inc. 3.1% Millicom International Cellular SA 3.1%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B256">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B257">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000204772
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Mini Mites Fund
Class Name	Class A
Trading Symbol	GMNAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Mini Mites Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B267">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Mini Mites Fund - Class A $43 0.90%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Mini Mites Fund underperformed its broad-based benchmark, the Russell 2000 Index, and its comparative benchmark, the S&P Developed Small Cap Index. The Mini Mites portfolio underperformed, attributable to its exposure to micro-cap stocks, as the Fund seeks to invest in companies that have market capitalizations of $250 million or less. The environment for small caps remained challenged as large capitalization companies outperformed given continued investor macroeconomic and geopolitical concerns, as well as heighted sensitivity to interest rates.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Mini Mites Fund - Class A Russell 2000 Index MSCI World Micro Cap Index S&P Developed Small Cap Index 10/18 10,000 10,000 10,000 10,000 6/19 8,745 9,669 9,038 9,824 6/20 7,686 9,028 8,781 9,283 6/21 14,538 14,628 14,510 14,169 6/22 10,883 10,942 10,843 11,019 6/23 13,102 12,289 11,156 12,531 6/24 14,556 13,525 11,716 13,737
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year Since Inception (10/1/2018) The Gabelli Global Mini Mites Fund - Class A (11.38)% 4.71% 8.13% 5.66% Russell 2000 Index 1.73% 10.06% 6.94% 4.75% MSCI World Micro Cap Index (0.08)% 5.01% 5.31% 2.92% S&P Developed Small Cap Index 2.04% 9.62% 6.93% 5.35%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 10,417,709
Holdings Count | Holding	140
Advisory Fees Paid, Amount	$ (37,461)
InvestmentCompanyPortfolioTurnover	13%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $10,417,709 Number of Portfolio Holdings 140 Portfolio Turnover Rate 13% Management Fees $(37,461)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Diversified Industrial 17.5% U.S. Government Obligations 17.2% Consumer Products 6.8% Health Care 5.7% Entertainment 5.5% Machinery 4.3% Equipment and Supplies 3.8% Business Services 3.6% Other Industry sectors 35.1% Other Assets and Liabilities (Net) 0.5%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Tredegar Corp. 4.8% Park-Ohio Holdings Corp. 3.1% Twin Disc Inc. 2.3% Inspired Entertainment Inc. 2.2% Applied Optoelectronics Inc. 2.1% Gencor Industries Inc. 2.0% Tribal Group plc 1.8% L.B. Foster Co. 1.7% Avio SpA 1.7% Myers Industries Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B287">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B288">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000204774
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Mini Mites Fund
Class Name	Class C
Trading Symbol	GMNCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Mini Mites Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B298">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Mini Mites Fund - Class C $43 0.90%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Mini Mites Fund underperformed its broad-based benchmark, the Russell 2000 Index, and its comparative benchmark, the S&P Developed Small Cap Index. The Mini Mites portfolio underperformed, attributable to its exposure to micro-cap stocks, as the Fund seeks to invest in companies that have market capitalizations of $250 million or less. The environment for small caps remained challenged as large capitalization companies outperformed given continued investor macroeconomic and geopolitical concerns, as well as heighted sensitivity to interest rates.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Mini Mites Fund - Class C Russell 2000 Index MSCI World Micro Cap Index S&P Developed Small Cap Index 10/18 10,000 10,000 10,000 10,000 6/19 9,343 9,669 9,038 9,824 6/20 7,638 9,028 8,781 9,283 6/21 14,369 14,628 14,510 14,169 6/22 10,649 10,942 10,843 11,019 6/23 12,706 12,289 11,156 12,531 6/24 13,990 13,525 11,716 13,737
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year Since Inception (10/1/2018) The Gabelli Global Mini Mites Fund - Class C (6.93)% 10.10% 9.20% 6.61% Russell 2000 Index 1.73% 10.06% 6.94% 4.75% MSCI World Micro Cap Index (0.08)% 5.01% 5.31% 2.92% S&P Developed Small Cap Index 2.04% 9.62% 6.93% 5.35%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 10,417,709
Holdings Count | Holding	140
Advisory Fees Paid, Amount	$ (37,461)
InvestmentCompanyPortfolioTurnover	13%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $10,417,709 Number of Portfolio Holdings 140 Portfolio Turnover Rate 13% Management Fees $(37,461)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Diversified Industrial 17.5% U.S. Government Obligations 17.2% Consumer Products 6.8% Health Care 5.7% Entertainment 5.5% Machinery 4.3% Equipment and Supplies 3.8% Business Services 3.6% Other Industry sectors 35.1% Other Assets and Liabilities (Net) 0.5%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Tredegar Corp. 4.8% Park-Ohio Holdings Corp. 3.1% Twin Disc Inc. 2.3% Inspired Entertainment Inc. 2.2% Applied Optoelectronics Inc. 2.1% Gencor Industries Inc. 2.0% Tribal Group plc 1.8% L.B. Foster Co. 1.7% Avio SpA 1.7% Myers Industries Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B318">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B319">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000204771
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Mini Mites Fund
Class Name	Class I
Trading Symbol	GGMMX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Mini Mites Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B329">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Mini Mites Fund - Class I $43 0.90%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Mini Mites Fund underperformed its broad-based benchmark, the Russell 2000 Index, and its comparative benchmark, the S&P Developed Small Cap Index. The Mini Mites portfolio underperformed, attributable to its exposure to micro-cap stocks, as the Fund seeks to invest in companies that have market capitalizations of $250 million or less. The environment for small caps remained challenged as large capitalization companies outperformed given continued investor macroeconomic and geopolitical concerns, as well as heighted sensitivity to interest rates.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Mini Mites Fund - Class I Russell 2000 Index MSCI World Micro Cap Index S&P Developed Small Cap Index 10/18 10,000 10,000 10,000 10,000 6/19 9,296 9,669 9,038 9,824 6/20 7,718 9,028 8,781 9,283 6/21 14,591 14,628 14,510 14,169 6/22 10,914 10,942 10,843 11,019 6/23 13,151 12,289 11,156 12,531 6/24 14,596 13,525 11,716 13,737
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year Since Inception (10/1/2018) The Gabelli Global Mini Mites Fund - Class I (6.06)% 10.98% 9.44% 6.80% Russell 2000 Index 1.73% 10.06% 6.94% 4.75% MSCI World Micro Cap Index (0.08)% 5.01% 5.31% 2.92% S&P Developed Small Cap Index 2.04% 9.62% 6.93% 5.35%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 10,417,709
Holdings Count | Holding	140
Advisory Fees Paid, Amount	$ (37,461)
InvestmentCompanyPortfolioTurnover	13%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $10,417,709 Number of Portfolio Holdings 140 Portfolio Turnover Rate 13% Management Fees $(37,461)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Diversified Industrial 17.5% U.S. Government Obligations 17.2% Consumer Products 6.8% Health Care 5.7% Entertainment 5.5% Machinery 4.3% Equipment and Supplies 3.8% Business Services 3.6% Other Industry sectors 35.1% Other Assets and Liabilities (Net) 0.5%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Tredegar Corp. 4.8% Park-Ohio Holdings Corp. 3.1% Twin Disc Inc. 2.3% Inspired Entertainment Inc. 2.2% Applied Optoelectronics Inc. 2.1% Gencor Industries Inc. 2.0% Tribal Group plc 1.8% L.B. Foster Co. 1.7% Avio SpA 1.7% Myers Industries Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B349">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B350">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000204773
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Mini Mites Fund
Class Name	Class AAA
Trading Symbol	GAMNX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Mini Mites Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B360">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Mini Mites Fund - Class AAA $43 0.90%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Mini Mites Fund underperformed its broad-based benchmark, the Russell 2000 Index, and its comparative benchmark, the S&P Developed Small Cap Index. The Mini Mites portfolio underperformed, attributable to its exposure to micro-cap stocks, as the Fund seeks to invest in companies that have market capitalizations of $250 million or less. The environment for small caps remained challenged as large capitalization companies outperformed given continued investor macroeconomic and geopolitical concerns, as well as heighted sensitivity to interest rates.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Mini Mites Fund - Class AAA Russell 2000 Index MSCI World Micro Cap Index S&P Developed Small Cap Index 10/18 10,000 10,000 10,000 10,000 6/19 9,290 9,669 9,038 9,824 6/20 7,699 9,028 8,781 9,283 6/21 14,553 14,628 14,510 14,169 6/22 10,886 10,942 10,843 11,019 6/23 13,118 12,289 11,156 12,531 6/24 14,559 13,525 11,716 13,737
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year Since Inception (10/1/2018) The Gabelli Global Mini Mites Fund - Class AAA (6.06)% 10.98% 9.40% 6.75% Russell 2000 Index 1.73% 10.06% 6.94% 4.75% MSCI World Micro Cap Index (0.08)% 5.01% 5.31% 2.92% S&P Developed Small Cap Index 2.04% 9.62% 6.93% 5.35%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 10,417,709
Holdings Count | Holding	140
Advisory Fees Paid, Amount	$ (37,461)
InvestmentCompanyPortfolioTurnover	13%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $10,417,709 Number of Portfolio Holdings 140 Portfolio Turnover Rate 13% Management Fees $(37,461)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Diversified Industrial 17.5% U.S. Government Obligations 17.2% Consumer Products 6.8% Health Care 5.7% Entertainment 5.5% Machinery 4.3% Equipment and Supplies 3.8% Business Services 3.6% Other Industry sectors 35.1% Other Assets and Liabilities (Net) 0.5%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Tredegar Corp. 4.8% Park-Ohio Holdings Corp. 3.1% Twin Disc Inc. 2.3% Inspired Entertainment Inc. 2.2% Applied Optoelectronics Inc. 2.1% Gencor Industries Inc. 2.0% Tribal Group plc 1.8% L.B. Foster Co. 1.7% Avio SpA 1.7% Myers Industries Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B380">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B381">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002865
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Rising Income and Dividend Fund
Class Name	Class AAA
Trading Symbol	GAGCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Rising Income and Dividend Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B391">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Rising Income and Dividend Fund - Class AAA $44 0.90%
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Rising Income and Dividend Fund underperformed its broad-based benchmark, the MSCI World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Index. During the period, the Fund experienced lower inflationary fears and a more normalized supply chain environment, post-COVID, and markets remained quite steady despite ongoing geopolitical tensions. The Fund saw positive performance from several international stock markets, including Japan and Germany.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Rising Income and Dividend Fund - Class AAA MSCI World Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 10,039 10,197 10,299 6/16 10,173 9,974 10,038 6/17 11,742 11,855 11,973 6/18 12,170 13,242 13,636 6/19 11,936 14,161 14,998 6/20 10,656 14,642 16,666 6/21 15,945 20,451 22,931 6/22 13,413 17,600 17,173 6/23 15,302 20,967 20,525 6/24 15,550 25,317 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Rising Income and Dividend Fund - Class AAA (1.58)% 0.39% 5.17% 4.38% MSCI World Index 12.04% 20.75% 12.32% 9.73% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 55,836,380
Holdings Count | Holding	172
Advisory Fees Paid, Amount	$ 119,748
InvestmentCompanyPortfolioTurnover	2%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $55,836,380 Number of Portfolio Holdings 172 Portfolio Turnover Rate 2% Management Fees $119,748
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Food and Beverage 14.5% Financial Services 12.1% Diversified Industrial 7.7% Energy and Utilities 6.9% Electronics 6.8% Consumer Products 4.9% Telecommunications 4.8% Automotive 4.6% Other Industry sectors 37.5% Other Assets and Liabilities (Net) 0.2%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Sony Group Corp. 6.8% Berkshire Hathaway Inc. 3.3% Nestlé SA 2.6% CNH Industrial NV, New York 2.5% Herc Holdings Inc. 2.2% Traton SE 2.1% Enpro Inc. 1.8% Remy Cointreau SA 1.8% Landis+Gyr Group AG 1.7% T-Mobile US Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B411">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B412">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002864
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Rising Income and Dividend Fund
Class Name	Class C
Trading Symbol	GACCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Rising Income and Dividend Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B422">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Rising Income and Dividend Fund - Class C $44 0.90%
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Rising Income and Dividend Fund underperformed its broad-based benchmark, the MSCI World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Index. During the period, the Fund experienced lower inflationary fears and a more normalized supply chain environment, post-COVID, and markets remained quite steady despite ongoing geopolitical tensions. The Fund saw positive performance from several international stock markets, including Japan and Germany.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Rising Income and Dividend Fund - Class C MSCI World Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 9,865 10,197 10,299 6/16 9,800 9,974 10,038 6/17 11,136 11,855 11,973 6/18 11,341 13,242 13,636 6/19 10,931 14,161 14,998 6/20 9,630 14,642 16,666 6/21 14,316 20,451 22,931 6/22 11,920 17,600 17,173 6/23 13,480 20,967 20,525 6/24 13,396 25,317 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Rising Income and Dividend Fund - Class C (2.58)% (0.63)% 5.11% 3.94% MSCI World Index 12.04% 20.75% 12.32% 9.73% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 55,836,380
Holdings Count | Holding	172
Advisory Fees Paid, Amount	$ 119,748
InvestmentCompanyPortfolioTurnover	2%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $55,836,380 Number of Portfolio Holdings 172 Portfolio Turnover Rate 2% Management Fees $119,748
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Food and Beverage 14.5% Financial Services 12.1% Diversified Industrial 7.7% Energy and Utilities 6.9% Electronics 6.8% Consumer Products 4.9% Telecommunications 4.8% Automotive 4.6% Other Industry sectors 37.5% Other Assets and Liabilities (Net) 0.2%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Sony Group Corp. 6.8% Berkshire Hathaway Inc. 3.3% Nestlé SA 2.6% CNH Industrial NV, New York 2.5% Herc Holdings Inc. 2.2% Traton SE 2.1% Enpro Inc. 1.8% Remy Cointreau SA 1.8% Landis+Gyr Group AG 1.7% T-Mobile US Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B442">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B443">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000034308
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Rising Income and Dividend Fund
Class Name	Class I
Trading Symbol	GAGIX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Rising Income and Dividend Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B453">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Rising Income and Dividend Fund - Class I $44 0.90%
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Rising Income and Dividend Fund underperformed its broad-based benchmark, the MSCI World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Index. During the period, the Fund experienced lower inflationary fears and a more normalized supply chain environment, post-COVID, and markets remained quite steady despite ongoing geopolitical tensions. The Fund saw positive performance from several international stock markets, including Japan and Germany.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Rising Income and Dividend Fund - Class I MSCI World Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 10,066 10,197 10,299 6/16 10,205 9,974 10,038 6/17 11,841 11,855 11,973 6/18 12,349 13,242 13,636 6/19 12,202 14,161 14,998 6/20 10,925 14,642 16,666 6/21 16,346 20,451 22,931 6/22 13,944 17,600 17,173 6/23 15,912 20,967 20,525 6/24 15,968 25,317 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Rising Income and Dividend Fund - Class I (1.61)% 0.35% 5.23% 4.64% MSCI World Index 12.04% 20.75% 12.32% 9.73% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 55,836,380
Holdings Count | Holding	172
Advisory Fees Paid, Amount	$ 119,748
InvestmentCompanyPortfolioTurnover	2%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $55,836,380 Number of Portfolio Holdings 172 Portfolio Turnover Rate 2% Management Fees $119,748
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Food and Beverage 14.5% Financial Services 12.1% Diversified Industrial 7.7% Energy and Utilities 6.9% Electronics 6.8% Consumer Products 4.9% Telecommunications 4.8% Automotive 4.6% Other Industry sectors 37.5% Other Assets and Liabilities (Net) 0.2%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Sony Group Corp. 6.8% Berkshire Hathaway Inc. 3.3% Nestlé SA 2.6% CNH Industrial NV, New York 2.5% Herc Holdings Inc. 2.2% Traton SE 2.1% Enpro Inc. 1.8% Remy Cointreau SA 1.8% Landis+Gyr Group AG 1.7% T-Mobile US Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B473">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B474">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002862
Shareholder Report [Line Items]
Fund Name	The Gabelli Global Rising Income and Dividend Fund
Class Name	Class A
Trading Symbol	GAGAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli Global Rising Income and Dividend Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B484">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli Global Rising Income and Dividend Fund - Class A $44 0.90%
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.90%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli Global Rising Income and Dividend Fund underperformed its broad-based benchmark, the MSCI World Index and its comparative benchmark, the Lipper Global Large-Cap Growth Index. During the period, the Fund experienced lower inflationary fears and a more normalized supply chain environment, post-COVID, and markets remained quite steady despite ongoing geopolitical tensions. The Fund saw positive performance from several international stock markets, including Japan and Germany.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli Global Rising Income and Dividend Fund - Class A MSCI World Index Lipper Global Large-Cap Growth Fund Classification 6/14 10,000 10,000 10,000 6/15 9,459 10,197 10,299 6/16 10,146 9,974 10,038 6/17 11,716 11,855 11,973 6/18 12,140 13,242 13,636 6/19 11,910 14,161 14,998 6/20 10,634 14,642 16,666 6/21 15,910 20,451 22,931 6/22 13,383 17,600 17,173 6/23 15,269 20,967 20,525 6/24 15,323 25,317 24,755
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli Global Rising Income and Dividend Fund - Class A (7.24)% (5.42)% 3.93% 3.74% MSCI World Index 12.04% 20.75% 12.32% 9.73% Lipper Global Large-Cap Growth Fund Classification 13.01% 20.61% 10.54% 9.49%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 55,836,380
Holdings Count | Holding	172
Advisory Fees Paid, Amount	$ 119,748
InvestmentCompanyPortfolioTurnover	2%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $55,836,380 Number of Portfolio Holdings 172 Portfolio Turnover Rate 2% Management Fees $119,748
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Food and Beverage 14.5% Financial Services 12.1% Diversified Industrial 7.7% Energy and Utilities 6.9% Electronics 6.8% Consumer Products 4.9% Telecommunications 4.8% Automotive 4.6% Other Industry sectors 37.5% Other Assets and Liabilities (Net) 0.2%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Sony Group Corp. 6.8% Berkshire Hathaway Inc. 3.3% Nestlé SA 2.6% CNH Industrial NV, New York 2.5% Herc Holdings Inc. 2.2% Traton SE 2.1% Enpro Inc. 1.8% Remy Cointreau SA 1.8% Landis+Gyr Group AG 1.7% T-Mobile US Inc. 1.7%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B504">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B505">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002873
Shareholder Report [Line Items]
Fund Name	The Gabelli International Small Cap Fund
Class Name	Class AAA
Trading Symbol	GABOX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli International Small Cap Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B515">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli International Small Cap Fund - Class AAA $46 0.92%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.92%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli International Small Cap Fund underperformed its broad-based benchmark, MSCI AC World Index and its comparatives, the MSCI EAFE Small Cap Index. During the period, the Fund saw small cap stocks decline and the largest capitalization stocks rule the markets. In the face of declining inflation, some countries, including Switzerland, Canada, and Sweden, lowered rates, with consensus that the Fed may follow suit. As in previous time periods, high public sector debt continued to limit policy options.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli International Small Cap Fund - Class AAA MSCI ACWI Index MSCI EAFE Small Cap Index 6/14 10,000 10,000 10,000 6/15 9,453 10,071 9,955 6/16 9,584 9,695 9,624 6/17 10,841 11,516 11,900 6/18 11,636 12,752 13,429 6/19 10,662 13,484 12,627 6/20 10,968 13,768 12,224 6/21 15,233 19,175 17,296 6/22 10,566 16,155 13,207 6/23 11,883 18,825 14,622 6/24 11,474 22,474 15,836
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli International Small Cap Fund - Class AAA (3.19)% (3.44)% 1.48% 1.39% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI EAFE Small Cap Index 0.85% 8.30% 4.63% 4.70%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 5,887,341
Holdings Count | Holding	55
Advisory Fees Paid, Amount	$ (73,446)
InvestmentCompanyPortfolioTurnover	3%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $5,887,341 Number of Portfolio Holdings 55 Portfolio Turnover Rate 3% Management Fees $(73,446)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Materials 19.7% Health Care 18.2% Consumer Staples 15.9% Industrials 14.3% Consumer Discretionary 12.1% Information Technology 11.8% Financials 5.1% U.S. Government Obligations 2.8% Other Industry sectors 1.1% Other Assets and Liabilities (Net) (1.0)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Siegfried Holding AG 4.0% Chemring Group plc 4.0% Alamos Gold Inc. 3.7% Endeavour Mining plc 3.4% Laurent-Perrier 3.3% Gerresheimer AG 3.3% Tamburi Investment Partners SpA 3.0% Interparfums SA 2.5% PSI Software SE 2.4% Osisko Gold Royalties Ltd. 2.4%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B535">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B536">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002871
Shareholder Report [Line Items]
Fund Name	The Gabelli International Small Cap Fund
Class Name	Class C
Trading Symbol	GGLCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli International Small Cap Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B546">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli International Small Cap Fund - Class C $46 0.92%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.92%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli International Small Cap Fund underperformed its broad-based benchmark, MSCI AC World Index and its comparatives, the MSCI EAFE Small Cap Index. During the period, the Fund saw small cap stocks decline and the largest capitalization stocks rule the markets. In the face of declining inflation, some countries, including Switzerland, Canada, and Sweden, lowered rates, with consensus that the Fed may follow suit. As in previous time periods, high public sector debt continued to limit policy options.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli International Small Cap Fund - Class C MSCI ACWI Index MSCI EAFE Small Cap Index 6/14 10,000 10,000 10,000 6/15 9,283 10,071 9,955 6/16 9,253 9,695 9,624 6/17 10,340 11,516 11,900 6/18 10,821 12,752 13,429 6/19 9,646 13,484 12,627 6/20 9,754 13,768 12,224 6/21 13,447 19,175 17,296 6/22 9,241 16,155 13,207 6/23 10,294 18,825 14,622 6/24 9,846 22,474 15,836
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli International Small Cap Fund - Class C (4.17)% (4.36)% 1.34% 0.79% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI EAFE Small Cap Index 0.85% 8.30% 4.63% 4.70%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 5,887,341
Holdings Count | Holding	55
Advisory Fees Paid, Amount	$ (73,446)
InvestmentCompanyPortfolioTurnover	3%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $5,887,341 Number of Portfolio Holdings 55 Portfolio Turnover Rate 3% Management Fees $(73,446)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Materials 19.7% Health Care 18.2% Consumer Staples 15.9% Industrials 14.3% Consumer Discretionary 12.1% Information Technology 11.8% Financials 5.1% U.S. Government Obligations 2.8% Other Industry sectors 1.1% Other Assets and Liabilities (Net) (1.0)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Siegfried Holding AG 4.0% Chemring Group plc 4.0% Alamos Gold Inc. 3.7% Endeavour Mining plc 3.4% Laurent-Perrier 3.3% Gerresheimer AG 3.3% Tamburi Investment Partners SpA 3.0% Interparfums SA 2.5% PSI Software SE 2.4% Osisko Gold Royalties Ltd. 2.4%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B566">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B567">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000034310
Shareholder Report [Line Items]
Fund Name	The Gabelli International Small Cap Fund
Class Name	Class I
Trading Symbol	GLOIX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli International Small Cap Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B577">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli International Small Cap Fund - Class I $46 0.92%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.92%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli International Small Cap Fund underperformed its broad-based benchmark, MSCI AC World Index and its comparatives, the MSCI EAFE Small Cap Index. During the period, the Fund saw small cap stocks decline and the largest capitalization stocks rule the markets. In the face of declining inflation, some countries, including Switzerland, Canada, and Sweden, lowered rates, with consensus that the Fed may follow suit. As in previous time periods, high public sector debt continued to limit policy options.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli International Small Cap Fund - Class I MSCI ACWI Index MSCI EAFE Small Cap Index 6/14 10,000 10,000 10,000 6/15 9,530 10,071 9,955 6/16 9,745 9,695 9,624 6/17 11,083 11,516 11,900 6/18 11,915 12,752 13,429 6/19 10,921 13,484 12,627 6/20 11,231 13,768 12,224 6/21 15,599 19,175 17,296 6/22 10,821 16,155 13,207 6/23 12,163 18,825 14,622 6/24 11,755 22,474 15,836
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli International Small Cap Fund - Class I (3.19)% (3.35)% 1.48% 1.63% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI EAFE Small Cap Index 0.85% 8.30% 4.63% 4.70%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 5,887,341
Holdings Count | Holding	55
Advisory Fees Paid, Amount	$ (73,446)
InvestmentCompanyPortfolioTurnover	3%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $5,887,341 Number of Portfolio Holdings 55 Portfolio Turnover Rate 3% Management Fees $(73,446)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Materials 19.7% Health Care 18.2% Consumer Staples 15.9% Industrials 14.3% Consumer Discretionary 12.1% Information Technology 11.8% Financials 5.1% U.S. Government Obligations 2.8% Other Industry sectors 1.1% Other Assets and Liabilities (Net) (1.0)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Siegfried Holding AG 4.0% Chemring Group plc 4.0% Alamos Gold Inc. 3.7% Endeavour Mining plc 3.4% Laurent-Perrier 3.3% Gerresheimer AG 3.3% Tamburi Investment Partners SpA 3.0% Interparfums SA 2.5% PSI Software SE 2.4% Osisko Gold Royalties Ltd. 2.4%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B597">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B598">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
C000002872
Shareholder Report [Line Items]
Fund Name	The Gabelli International Small Cap Fund
Class Name	Class A
Trading Symbol	GOCAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about The Gabelli International Small Cap Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at www.gabelli.com
Additional Information Phone Number	800-GABELLI (800-422-3554)
Additional Information Website	www.gabelli.com</span>" id="sjs-B608">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>
Expenses [Text Block]	What were the Fund costs for the last six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10k Investment Costs Paid as a % of a $10k Investment The Gabelli International Small Cap Fund - Class A $46 0.92%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.92%
Factors Affecting Performance [Text Block]	How did the Fund perform? During the six months ended June 30, 2024, the Gabelli International Small Cap Fund underperformed its broad-based benchmark, MSCI AC World Index and its comparatives, the MSCI EAFE Small Cap Index. During the period, the Fund saw small cap stocks decline and the largest capitalization stocks rule the markets. In the face of declining inflation, some countries, including Switzerland, Canada, and Sweden, lowered rates, with consensus that the Fed may follow suit. As in previous time periods, high public sector debt continued to limit policy options.
Performance Past Does Not Indicate Future [Text]	Past performance does not guarantee future results.
Line Graph [Table Text Block]	The Gabelli International Small Cap Fund - Class A MSCI ACWI Index MSCI EAFE Small Cap Index 6/14 10,000 10,000 10,000 6/15 8,904 10,071 9,955 6/16 9,578 9,695 9,624 6/17 10,839 11,516 11,900 6/18 11,541 12,752 13,429 6/19 10,467 13,484 12,627 6/20 10,721 13,768 12,224 6/21 14,892 19,175 17,296 6/22 10,336 16,155 13,207 6/23 11,618 18,825 14,622 6/24 11,217 22,474 15,836
Average Annual Return [Table Text Block]	Fund 6 months 1 Year 5 Year 10 Year The Gabelli International Small Cap Fund - Class A (8.77)% (9.00)% 0.20% 0.56% MSCI ACWI Index 11.30% 19.38% 10.76% 8.43% MSCI EAFE Small Cap Index 0.85% 8.30% 4.63% 4.70%
No Deduction of Taxes [Text Block]	The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on fund distributions or the redemption of fund shares.
Performance Table Market Index Changed [Text Block]
Updated Performance Information Location [Text Block]	Updated Location: Visit www.confluence.com/funds for more recent performance information.
AssetsNet	$ 5,887,341
Holdings Count | Holding	55
Advisory Fees Paid, Amount	$ (73,446)
InvestmentCompanyPortfolioTurnover	3%
Additional Fund Statistics [Text Block]	Fund Statistics Total Net Assets $5,887,341 Number of Portfolio Holdings 55 Portfolio Turnover Rate 3% Management Fees $(73,446)
Holdings [Text Block]	Industry Allocation (% of net assets) Industry Weighting . Materials 19.7% Health Care 18.2% Consumer Staples 15.9% Industrials 14.3% Consumer Discretionary 12.1% Information Technology 11.8% Financials 5.1% U.S. Government Obligations 2.8% Other Industry sectors 1.1% Other Assets and Liabilities (Net) (1.0)%
Largest Holdings [Text Block]	Top 10 Holdings (% of net assets) Top 10 Siegfried Holding AG 4.0% Chemring Group plc 4.0% Alamos Gold Inc. 3.7% Endeavour Mining plc 3.4% Laurent-Perrier 3.3% Gerresheimer AG 3.3% Tamburi Investment Partners SpA 3.0% Interparfums SA 2.5% PSI Software SE 2.4% Osisko Gold Royalties Ltd. 2.4%
Material Fund Change [Text Block]
Updated Prospectus Phone Number	800-GABELLI (800-422-3554)
Updated Prospectus Email Address	info@gabelli.com</span>" id="sjs-B628">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">info@gabelli.com&lt;/span>
Updated Prospectus Web Address	www.gabelli.com</span>" id="sjs-B629">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: justify;">www.gabelli.com&lt;/span>

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)		6 Months Ended
	Oct. 01, 2018	Jun. 30, 2014	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
C000002867
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Growth Fund - Class AAA
C000002869
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Growth Fund - Class C
C000034309
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Growth Fund - Class I
C000002866
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Growth Fund - Class A
C000002875
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Content & Connectivity Fund - Class AAA
C000002877
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Content & Connectivity Fund - Class C
C000034311
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Content & Connectivity Fund - Class I
C000002874
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Content & Connectivity Fund - Class A
C000204772
Account Value [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class A
C000204774
Account Value [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class C
C000204771
Account Value [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class I
C000204773
Account Value [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class AAA
C000002865
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Rising Income and Dividend Fund - Class AAA
C000002864
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Rising Income and Dividend Fund - Class C
C000034308
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Rising Income and Dividend Fund - Class I
C000002862
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli Global Rising Income and Dividend Fund - Class A
C000002873
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli International Small Cap Fund - Class AAA
C000002871
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli International Small Cap Fund - Class C
C000034310
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli International Small Cap Fund - Class I
C000002872
Account Value [Line Items]
Line Graph and Table Measure Name		The Gabelli International Small Cap Fund - Class A
MSCI ACWI Index
Account Value [Line Items]
Account Value		$ 10,000	$ 22,474	$ 18,825	$ 16,155	$ 19,175	$ 13,768	$ 13,484	$ 12,752	$ 11,516	$ 9,695	$ 10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
Russell 2000 Index
Account Value [Line Items]
Account Value	$ 10,000		13,525	12,289	10,942	14,628	9,028	9,669
Russell 2000 Index
Account Value [Line Items]
Account Value	10,000		13,525	12,289	10,942	14,628	9,028	9,669
Russell 2000 Index
Account Value [Line Items]
Account Value	10,000		13,525	12,289	10,942	14,628	9,028	9,669
Russell 2000 Index
Account Value [Line Items]
Account Value	$ 10,000		13,525	12,289	10,942	14,628	9,028	9,669
MSCI World Index
Account Value [Line Items]
Account Value		10,000	25,317	20,967	17,600	20,451	14,642	14,161	13,242	11,855	9,974	10,197
MSCI World Index
Account Value [Line Items]
Account Value		10,000	25,317	20,967	17,600	20,451	14,642	14,161	13,242	11,855	9,974	10,197
MSCI World Index
Account Value [Line Items]
Account Value		10,000	25,317	20,967	17,600	20,451	14,642	14,161	13,242	11,855	9,974	10,197
MSCI World Index
Account Value [Line Items]
Account Value		10,000	25,317	20,967	17,600	20,451	14,642	14,161	13,242	11,855	9,974	10,197
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		10,000	22,474	18,825	16,155	19,175	13,768	13,484	12,752	11,516	9,695	10,071
MSCI ACWI Index
Account Value [Line Items]
Account Value		$ 10,000	$ 22,474	$ 18,825	$ 16,155	$ 19,175	$ 13,768	$ 13,484	$ 12,752	$ 11,516	$ 9,695	$ 10,071

Shareholder Report, Average Ann

Shareholder Report, Average Annual Return (Details)		6 Months Ended		12 Months Ended	60 Months Ended	69 Months Ended	120 Months Ended
	Oct. 01, 2018	Jun. 30, 2024	Jun. 30, 2014	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2024
C000002867
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Growth Fund - Class AAA
C000002869
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Growth Fund - Class C
Average Annual Return, Percent		23.38%		31.03%	12.88%		10.39%
C000034309
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Growth Fund - Class I
C000002866
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Growth Fund - Class A
Average Annual Return, Percent		17.20%		24.44%	11.61%		10.18%
C000002875
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Content & Connectivity Fund - Class AAA
C000002877
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Content & Connectivity Fund - Class C
Average Annual Return, Percent		12.91%		21.97%	4.70%		2.56%
C000034311
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Content & Connectivity Fund - Class I
C000002874
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Content & Connectivity Fund - Class A
Average Annual Return, Percent		6.84%		15.83%	3.63%		2.40%
C000204772
Average Annual Return [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class A
Average Annual Return, Percent		(11.38%)		4.71%	8.13%	5.66%
C000204774
Average Annual Return [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class C
Average Annual Return, Percent		(6.93%)		10.10%	9.20%	6.61%
C000204771
Average Annual Return [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class I
C000204773
Average Annual Return [Line Items]
Line Graph and Table Measure Name	The Gabelli Global Mini Mites Fund - Class AAA
C000002865
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Rising Income and Dividend Fund - Class AAA
C000002864
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Rising Income and Dividend Fund - Class C
Average Annual Return, Percent		(2.58%)		(0.63%)	5.11%		3.94%
C000034308
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Rising Income and Dividend Fund - Class I
C000002862
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli Global Rising Income and Dividend Fund - Class A
Average Annual Return, Percent		(7.24%)		(5.42%)	3.93%		3.74%
C000002873
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli International Small Cap Fund - Class AAA
C000002871
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli International Small Cap Fund - Class C
Average Annual Return, Percent		(4.17%)		(4.36%)	1.34%		0.79%
C000034310
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli International Small Cap Fund - Class I
C000002872
Average Annual Return [Line Items]
Line Graph and Table Measure Name			The Gabelli International Small Cap Fund - Class A
Average Annual Return, Percent		(8.77%)		(9.00%)	0.20%		0.56%
Without Sales Load [Member] | C000002867
Average Annual Return [Line Items]
Average Annual Return, Percent		24.36%		32.03%	12.94%		10.84%
Without Sales Load [Member] | C000034309
Average Annual Return [Line Items]
Average Annual Return, Percent		24.36%		32.06%	12.97%		11.18%
Without Sales Load [Member] | C000002875
Average Annual Return [Line Items]
Average Annual Return, Percent		13.38%		22.89%	4.87%		3.03%
Without Sales Load [Member] | C000034311
Average Annual Return [Line Items]
Average Annual Return, Percent		13.37%		22.91%	4.94%		3.31%
Without Sales Load [Member] | C000002865
Average Annual Return [Line Items]
Average Annual Return, Percent		(1.58%)		0.39%	5.17%		4.38%
Without Sales Load [Member] | C000034308
Average Annual Return [Line Items]
Average Annual Return, Percent		(1.61%)		0.35%	5.23%		4.64%
Without Sales Load [Member] | C000002873
Average Annual Return [Line Items]
Average Annual Return, Percent		(3.19%)		(3.44%)	1.48%		1.39%
Without Sales Load [Member] | C000034310
Average Annual Return [Line Items]
Average Annual Return, Percent		(3.19%)		(3.35%)	1.48%		1.63%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI World Index
Average Annual Return [Line Items]
Average Annual Return, Percent		12.04%		20.75%	12.32%		9.73%
MSCI World Index
Average Annual Return [Line Items]
Average Annual Return, Percent		12.04%		20.75%	12.32%		9.73%
MSCI World Index
Average Annual Return [Line Items]
Average Annual Return, Percent		12.04%		20.75%	12.32%		9.73%
MSCI World Index
Average Annual Return [Line Items]
Average Annual Return, Percent		12.04%		20.75%	12.32%		9.73%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
MSCI ACWI Index
Average Annual Return [Line Items]
Average Annual Return, Percent		11.30%		19.38%	10.76%		8.43%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
MSCI AC World Communication Services Index
Average Annual Return [Line Items]
Average Annual Return, Percent		20.56%		32.58%	10%		6.20%
MSCI AC World Communication Services Index
Average Annual Return [Line Items]
Average Annual Return, Percent		20.56%		32.58%	10%		6.20%
MSCI AC World Communication Services Index
Average Annual Return [Line Items]
Average Annual Return, Percent		20.56%		32.58%	10%		6.20%
MSCI AC World Communication Services Index
Average Annual Return [Line Items]
Average Annual Return, Percent		20.56%		32.58%	10%		6.20%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
Lipper Global Large-Cap Growth Fund Classification
Average Annual Return [Line Items]
Average Annual Return, Percent		13.01%		20.61%	10.54%		9.49%
MSCI EAFE Small Cap Index
Average Annual Return [Line Items]
Average Annual Return, Percent		0.85%		8.30%	4.63%		4.70%
MSCI EAFE Small Cap Index
Average Annual Return [Line Items]
Average Annual Return, Percent		0.85%		8.30%	4.63%		4.70%
MSCI EAFE Small Cap Index
Average Annual Return [Line Items]
Average Annual Return, Percent		0.85%		8.30%	4.63%		4.70%
MSCI EAFE Small Cap Index
Average Annual Return [Line Items]
Average Annual Return, Percent		0.85%		8.30%	4.63%		4.70%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
C000002867 | NVIDIA Corp.
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000002867 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000002867 | Amazon.com Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000002867 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000002867 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000002867 | Netflix Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000002867 | Eli Lilly & Co.
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000002867 | Novo Nordisk A/S
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002867 | LVMH Moet Hennessy Louis Vuitton SE
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000002867 | L'Oreal SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002867 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	98.30%
C000002867 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002867 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002867 | Information Technology - Semiconductors, Hardware, and Equipment
Holdings [Line Items]
Percent of Net Asset Value	22.30%
C000002867 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	17.90%
C000002867 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000002867 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	12.60%
C000002867 | Information Technology - Software and Services
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000002867 | Financials
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000002867 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000002867 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002867 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002867 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002869 | NVIDIA Corp.
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000002869 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000002869 | Amazon.com Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000002869 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000002869 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000002869 | Netflix Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000002869 | Eli Lilly & Co.
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000002869 | Novo Nordisk A/S
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002869 | LVMH Moet Hennessy Louis Vuitton SE
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000002869 | L'Oreal SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002869 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	98.30%
C000002869 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002869 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002869 | Information Technology - Semiconductors, Hardware, and Equipment
Holdings [Line Items]
Percent of Net Asset Value	22.30%
C000002869 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	17.90%
C000002869 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000002869 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	12.60%
C000002869 | Information Technology - Software and Services
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000002869 | Financials
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000002869 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000002869 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002869 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002869 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000034309 | NVIDIA Corp.
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000034309 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000034309 | Amazon.com Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000034309 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000034309 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000034309 | Netflix Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000034309 | Eli Lilly & Co.
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000034309 | Novo Nordisk A/S
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000034309 | LVMH Moet Hennessy Louis Vuitton SE
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000034309 | L'Oreal SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000034309 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	98.30%
C000034309 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000034309 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000034309 | Information Technology - Semiconductors, Hardware, and Equipment
Holdings [Line Items]
Percent of Net Asset Value	22.30%
C000034309 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	17.90%
C000034309 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000034309 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	12.60%
C000034309 | Information Technology - Software and Services
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000034309 | Financials
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000034309 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000034309 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000034309 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000034309 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002866 | NVIDIA Corp.
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000002866 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000002866 | Amazon.com Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000002866 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000002866 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000002866 | Netflix Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000002866 | Eli Lilly & Co.
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000002866 | Novo Nordisk A/S
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002866 | LVMH Moet Hennessy Louis Vuitton SE
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000002866 | L'Oreal SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002866 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	98.30%
C000002866 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002866 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002866 | Information Technology - Semiconductors, Hardware, and Equipment
Holdings [Line Items]
Percent of Net Asset Value	22.30%
C000002866 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	17.90%
C000002866 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000002866 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	12.60%
C000002866 | Information Technology - Software and Services
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000002866 | Financials
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000002866 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000002866 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002866 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002866 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002875 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000002875 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000002875 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000002875 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000002875 | SoftBank Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002875 | Prosus NV
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000002875 | Deutsche Telekom AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002875 | United States Cellular Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000002875 | Anterix Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002875 | Millicom International Cellular SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002875 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	99%
C000002875 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002875 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000002875 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002875 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	73.80%
C000002875 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002875 | Financials
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000002875 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000002875 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000002875 | Real Estate
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000002875 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002877 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000002877 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000002877 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000002877 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000002877 | SoftBank Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002877 | Prosus NV
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000002877 | Deutsche Telekom AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002877 | United States Cellular Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000002877 | Anterix Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002877 | Millicom International Cellular SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002877 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	99%
C000002877 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002877 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000002877 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002877 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	73.80%
C000002877 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002877 | Financials
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000002877 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000002877 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000002877 | Real Estate
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000002877 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000034311 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000034311 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000034311 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000034311 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000034311 | SoftBank Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000034311 | Prosus NV
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000034311 | Deutsche Telekom AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000034311 | United States Cellular Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000034311 | Anterix Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000034311 | Millicom International Cellular SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000034311 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	99%
C000034311 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000034311 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000034311 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000034311 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	73.80%
C000034311 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000034311 | Financials
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000034311 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000034311 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000034311 | Real Estate
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000034311 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002874 | Microsoft Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000002874 | Meta Platforms Inc.
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000002874 | Alphabet Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000002874 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000002874 | SoftBank Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002874 | Prosus NV
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000002874 | Deutsche Telekom AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002874 | United States Cellular Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000002874 | Anterix Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002874 | Millicom International Cellular SA
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000002874 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	99%
C000002874 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000002874 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000002874 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000002874 | Communication Services
Holdings [Line Items]
Percent of Net Asset Value	73.80%
C000002874 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002874 | Financials
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000002874 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000002874 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000002874 | Real Estate
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000002874 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000204772 | Tredegar Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000204772 | Park-Ohio Holdings Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000204772 | Twin Disc Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000204772 | Inspired Entertainment Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000204772 | Applied Optoelectronics Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000204772 | Gencor Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	2%
C000204772 | Tribal Group plc
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000204772 | L.B. Foster Co.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204772 | Avio SpA
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204772 | Myers Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204772 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	82.30%
C000204772 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204772 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204772 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000204772 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	35.10%
C000204772 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204772 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204772 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	17.50%
C000204772 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000204772 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000204772 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000204772 | Equipment and Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000204772 | Business Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000204774 | Tredegar Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000204774 | Park-Ohio Holdings Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000204774 | Twin Disc Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000204774 | Inspired Entertainment Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000204774 | Applied Optoelectronics Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000204774 | Gencor Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	2%
C000204774 | Tribal Group plc
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000204774 | L.B. Foster Co.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204774 | Avio SpA
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204774 | Myers Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204774 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	82.30%
C000204774 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204774 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204774 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000204774 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	35.10%
C000204774 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204774 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204774 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	17.50%
C000204774 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000204774 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000204774 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000204774 | Equipment and Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000204774 | Business Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000204771 | Tredegar Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000204771 | Park-Ohio Holdings Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000204771 | Twin Disc Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000204771 | Inspired Entertainment Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000204771 | Applied Optoelectronics Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000204771 | Gencor Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	2%
C000204771 | Tribal Group plc
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000204771 | L.B. Foster Co.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204771 | Avio SpA
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204771 | Myers Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204771 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	82.30%
C000204771 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204771 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204771 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000204771 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	35.10%
C000204771 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204771 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204771 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	17.50%
C000204771 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000204771 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000204771 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000204771 | Equipment and Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000204771 | Business Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000204773 | Tredegar Corp.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000204773 | Park-Ohio Holdings Corp.
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000204773 | Twin Disc Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000204773 | Inspired Entertainment Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000204773 | Applied Optoelectronics Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000204773 | Gencor Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	2%
C000204773 | Tribal Group plc
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000204773 | L.B. Foster Co.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204773 | Avio SpA
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204773 | Myers Industries Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000204773 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	82.30%
C000204773 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204773 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204773 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000204773 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	35.10%
C000204773 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000204773 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000204773 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	17.50%
C000204773 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000204773 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000204773 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000204773 | Equipment and Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000204773 | Business Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002865 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002865 | Sony Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000002865 | Berkshire Hathaway Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002865 | Nestlé SA
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000002865 | CNH Industrial NV, New York
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000002865 | Herc Holdings Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000002865 | Traton SE
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000002865 | Enpro Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000002865 | Remy Cointreau SA
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000002865 | Landis+Gyr Group AG
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002865 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.20%
C000002865 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002865 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000002865 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	37.50%
C000002865 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000002865 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002865 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000002865 | Food and Beverage
Holdings [Line Items]
Percent of Net Asset Value	14.50%
C000002865 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000002865 | Energy and Utilities
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000002865 | Electronics
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000002865 | Telecommunications
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000002865 | Automotive
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000002864 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002864 | Sony Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000002864 | Berkshire Hathaway Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002864 | Nestlé SA
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000002864 | CNH Industrial NV, New York
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000002864 | Herc Holdings Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000002864 | Traton SE
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000002864 | Enpro Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000002864 | Remy Cointreau SA
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000002864 | Landis+Gyr Group AG
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002864 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.20%
C000002864 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002864 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000002864 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	37.50%
C000002864 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000002864 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002864 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000002864 | Food and Beverage
Holdings [Line Items]
Percent of Net Asset Value	14.50%
C000002864 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000002864 | Energy and Utilities
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000002864 | Electronics
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000002864 | Telecommunications
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000002864 | Automotive
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000034308 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000034308 | Sony Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000034308 | Berkshire Hathaway Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000034308 | Nestlé SA
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000034308 | CNH Industrial NV, New York
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000034308 | Herc Holdings Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000034308 | Traton SE
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000034308 | Enpro Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000034308 | Remy Cointreau SA
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000034308 | Landis+Gyr Group AG
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000034308 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.20%
C000034308 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000034308 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000034308 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	37.50%
C000034308 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000034308 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000034308 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000034308 | Food and Beverage
Holdings [Line Items]
Percent of Net Asset Value	14.50%
C000034308 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000034308 | Energy and Utilities
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000034308 | Electronics
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000034308 | Telecommunications
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000034308 | Automotive
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000002862 | T-Mobile US Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002862 | Sony Group Corp.
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000002862 | Berkshire Hathaway Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002862 | Nestlé SA
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000002862 | CNH Industrial NV, New York
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000002862 | Herc Holdings Inc.
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000002862 | Traton SE
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000002862 | Enpro Inc.
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000002862 | Remy Cointreau SA
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000002862 | Landis+Gyr Group AG
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000002862 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.20%
C000002862 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000002862 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000002862 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	37.50%
C000002862 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000002862 | Diversified Industrial
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000002862 | Consumer Products
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000002862 | Food and Beverage
Holdings [Line Items]
Percent of Net Asset Value	14.50%
C000002862 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000002862 | Energy and Utilities
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000002862 | Electronics
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000002862 | Telecommunications
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000002862 | Automotive
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000002873 | Siegfried Holding AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002873 | Chemring Group plc
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002873 | Alamos Gold Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000002873 | Endeavour Mining plc
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000002873 | Laurent-Perrier
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002873 | Gerresheimer AG
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002873 | Tamburi Investment Partners SpA
Holdings [Line Items]
Percent of Net Asset Value	3%
C000002873 | Interparfums SA
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000002873 | PSI Software SE
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000002873 | Osisko Gold Royalties Ltd.
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000002873 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.60%
C000002873 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000002873 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000002873 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000002873 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000002873 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000002873 | Financials
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000002873 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	14.30%
C000002873 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	15.90%
C000002873 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000002873 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000002873 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000002873 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000002873 | Materials
Holdings [Line Items]
Percent of Net Asset Value	19.70%
C000002871 | Siegfried Holding AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002871 | Chemring Group plc
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002871 | Alamos Gold Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000002871 | Endeavour Mining plc
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000002871 | Laurent-Perrier
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002871 | Gerresheimer AG
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002871 | Tamburi Investment Partners SpA
Holdings [Line Items]
Percent of Net Asset Value	3%
C000002871 | Interparfums SA
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000002871 | PSI Software SE
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000002871 | Osisko Gold Royalties Ltd.
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000002871 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.60%
C000002871 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000002871 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000002871 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000002871 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000002871 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000002871 | Financials
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000002871 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	14.30%
C000002871 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	15.90%
C000002871 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000002871 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000002871 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000002871 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000002871 | Materials
Holdings [Line Items]
Percent of Net Asset Value	19.70%
C000034310 | Siegfried Holding AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000034310 | Chemring Group plc
Holdings [Line Items]
Percent of Net Asset Value	4%
C000034310 | Alamos Gold Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000034310 | Endeavour Mining plc
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000034310 | Laurent-Perrier
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000034310 | Gerresheimer AG
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000034310 | Tamburi Investment Partners SpA
Holdings [Line Items]
Percent of Net Asset Value	3%
C000034310 | Interparfums SA
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000034310 | PSI Software SE
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000034310 | Osisko Gold Royalties Ltd.
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000034310 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.60%
C000034310 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000034310 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000034310 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000034310 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000034310 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000034310 | Financials
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000034310 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	14.30%
C000034310 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	15.90%
C000034310 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000034310 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000034310 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000034310 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000034310 | Materials
Holdings [Line Items]
Percent of Net Asset Value	19.70%
C000002872 | Siegfried Holding AG
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002872 | Chemring Group plc
Holdings [Line Items]
Percent of Net Asset Value	4%
C000002872 | Alamos Gold Inc.
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000002872 | Endeavour Mining plc
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000002872 | Laurent-Perrier
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002872 | Gerresheimer AG
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000002872 | Tamburi Investment Partners SpA
Holdings [Line Items]
Percent of Net Asset Value	3%
C000002872 | Interparfums SA
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000002872 | PSI Software SE
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000002872 | Osisko Gold Royalties Ltd.
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000002872 | InvestmentType_Common Stocks
Holdings [Line Items]
Percent of Net Asset Value	96.60%
C000002872 | InvestmentType_U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000002872 | InvestmentType_Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000002872 | InvestmentType_Preferred Stocks
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000002872 | Consumer Discretionary
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000002872 | Health Care
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000002872 | Financials
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000002872 | Industrials
Holdings [Line Items]
Percent of Net Asset Value	14.30%
C000002872 | Consumer Staples
Holdings [Line Items]
Percent of Net Asset Value	15.90%
C000002872 | Other Industry sectors
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000002872 | Other Assets and Liabilities (Net)
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000002872 | Information Technology
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000002872 | U.S. Government Obligations
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000002872 | Materials
Holdings [Line Items]
Percent of Net Asset Value	19.70%