| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | AMG Funds |
| Entity Central Index Key | 0001089951 |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | AMG Funds |
| Entity Central Index Key | 0001089951 |
| Document Period End Date | Jun. 30, 2024 |
| C000176471 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Global Fund |
| Class Name | Class N |
| Trading Symbol | YFSNX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman Global 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Global Fund $ 1.13 % |
| Expenses Paid, Amount | $ 57 |
| Expense Ratio, Percent | 1.13% |
| Net Assets | $ 172,619,428 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 619,235 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Bolloré SE (France) 9.4 % Samsung Electronics Co., Ltd., 1.560% (South Korea) 8.5 % Canadian Natural Resources, Ltd. (Canada) 7.2 % Samsung C&T Corp. (South Korea) 5.1 % Hyundai Motor Co., 8.200% (South Korea) 4.6 % Total Energy Services, Inc. (Canada) 4.3 % HI-LEX Corp. (Japan) 3.9 % Cie de L'Odet SE (France) 3.6 % Unit Corp. (United States) 3.4 % Ocean Wilsons Holdings, Ltd. (Bermuda) 3.2 % Top Ten as a Group 53.2 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Bolloré SE (France) 9.4 % Samsung Electronics Co., Ltd., 1.560% (South Korea) 8.5 % Canadian Natural Resources, Ltd. (Canada) 7.2 % Samsung C&T Corp. (South Korea) 5.1 % Hyundai Motor Co., 8.200% (South Korea) 4.6 % Total Energy Services, Inc. (Canada) 4.3 % HI-LEX Corp. (Japan) 3.9 % Cie de L'Odet SE (France) 3.6 % Unit Corp. (United States) 3.4 % Ocean Wilsons Holdings, Ltd. (Bermuda) 3.2 % Top Ten as a Group 53.2 % |
| C000176472 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Global Fund |
| Class Name | Class I |
| Trading Symbol | YFSIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman Global 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539. |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Global Fund $ 0.93 % |
| Expenses Paid, Amount | $ 47 |
| Expense Ratio, Percent | 0.93% |
| Net Assets | $ 172,619,428 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 619,235 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Bolloré SE (France) 9.4 % Samsung Electronics Co., Ltd., 1.560% (South Korea) 8.5 % Canadian Natural Resources, Ltd. (Canada) 7.2 % Samsung C&T Corp. (South Korea) 5.1 % Hyundai Motor Co., 8.200% (South Korea) 4.6 % Total Energy Services, Inc. (Canada) 4.3 % HI-LEX Corp. (Japan) 3.9 % Cie de L'Odet SE (France) 3.6 % Unit Corp. (United States) 3.4 % Ocean Wilsons Holdings, Ltd. (Bermuda) 3.2 % Top Ten as a Group 53.2 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Bolloré SE (France) 9.4 % Samsung Electronics Co., Ltd., 1.560% (South Korea) 8.5 % Canadian Natural Resources, Ltd. (Canada) 7.2 % Samsung C&T Corp. (South Korea) 5.1 % Hyundai Motor Co., 8.200% (South Korea) 4.6 % Total Energy Services, Inc. (Canada) 4.3 % HI-LEX Corp. (Japan) 3.9 % Cie de L'Odet SE (France) 3.6 % Unit Corp. (United States) 3.4 % Ocean Wilsons Holdings, Ltd. (Bermuda) 3.2 % Top Ten as a Group 53.2 % |
| C000056573 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small Cap Value Fund |
| Class Name | Class N |
| Trading Symbol | SKSEX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small Cap Value 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small Cap Value Fund $ 1.15 % |
| Expenses Paid, Amount | $ 57 |
| Expense Ratio, Percent | 1.15% |
| Net Assets | $ 234,572,911 |
| Holdings Count | Holding | 88 |
| Advisory Fees Paid, Amount | $ 802,618 |
| Investment Company Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Piper Sandler Cos. 2.2 % Federal Agricultural Mortgage Corp., Class C 2.2 % Primoris Services Corp. 2.2 % Selective Insurance Group, Inc. 2.2 % Independence Realty Trust, Inc., REIT 2.1 % Integer Holdings Corp. 2.1 % Permian Resources Corp. 2.1 % Boot Barn Holdings, Inc. 2.0 % PJT Partners, Inc., Class A 2.0 % CBIZ, Inc. 2.0 % Top Ten as a Group 21.1 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Piper Sandler Cos. 2.2 % Federal Agricultural Mortgage Corp., Class C 2.2 % Primoris Services Corp. 2.2 % Selective Insurance Group, Inc. 2.2 % Independence Realty Trust, Inc., REIT 2.1 % Integer Holdings Corp. 2.1 % Permian Resources Corp. 2.1 % Boot Barn Holdings, Inc. 2.0 % PJT Partners, Inc., Class A 2.0 % CBIZ, Inc. 2.0 % Top Ten as a Group 21.1 % |
| C000180067 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small Cap Value Fund |
| Class Name | Class I |
| Trading Symbol | SKSIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small Cap Value 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small Cap Value Fund $ 0.95 % |
| Expenses Paid, Amount | $ 47 |
| Expense Ratio, Percent | 0.95% |
| Net Assets | $ 234,572,911 |
| Holdings Count | Holding | 88 |
| Advisory Fees Paid, Amount | $ 802,618 |
| Investment Company Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Piper Sandler Cos. 2.2 % Federal Agricultural Mortgage Corp., Class C 2.2 % Primoris Services Corp. 2.2 % Selective Insurance Group, Inc. 2.2 % Independence Realty Trust, Inc., REIT 2.1 % Integer Holdings Corp. 2.1 % Permian Resources Corp. 2.1 % Boot Barn Holdings, Inc. 2.0 % PJT Partners, Inc., Class A 2.0 % CBIZ, Inc. 2.0 % Top Ten as a Group 21.1 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Piper Sandler Cos. 2.2 % Federal Agricultural Mortgage Corp., Class C 2.2 % Primoris Services Corp. 2.2 % Selective Insurance Group, Inc. 2.2 % Independence Realty Trust, Inc., REIT 2.1 % Integer Holdings Corp. 2.1 % Permian Resources Corp. 2.1 % Boot Barn Holdings, Inc. 2.0 % PJT Partners, Inc., Class A 2.0 % CBIZ, Inc. 2.0 % Top Ten as a Group 21.1 % |
| C000180068 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small Cap Value Fund |
| Class Name | Class Z |
| Trading Symbol | SKSZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small Cap Value 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small Cap Value Fund $ 0.90 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.90% |
| Net Assets | $ 234,572,911 |
| Holdings Count | Holding | 88 |
| Advisory Fees Paid, Amount | $ 802,618 |
| Investment Company Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Piper Sandler Cos. 2.2 % Federal Agricultural Mortgage Corp., Class C 2.2 % Primoris Services Corp. 2.2 % Selective Insurance Group, Inc. 2.2 % Independence Realty Trust, Inc., REIT 2.1 % Integer Holdings Corp. 2.1 % Permian Resources Corp. 2.1 % Boot Barn Holdings, Inc. 2.0 % PJT Partners, Inc., Class A 2.0 % CBIZ, Inc. 2.0 % Top Ten as a Group 21.1 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Piper Sandler Cos. 2.2 % Federal Agricultural Mortgage Corp., Class C 2.2 % Primoris Services Corp. 2.2 % Selective Insurance Group, Inc. 2.2 % Independence Realty Trust, Inc., REIT 2.1 % Integer Holdings Corp. 2.1 % Permian Resources Corp. 2.1 % Boot Barn Holdings, Inc. 2.0 % PJT Partners, Inc., Class A 2.0 % CBIZ, Inc. 2.0 % Top Ten as a Group 21.1 % |
| C000027323 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Mid Cap Growth Fund |
| Class Name | Class N |
| Trading Symbol | TMDPX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Mid Cap 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 https://wealth.amg.com/resources/order-literature |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Mid Cap Growth Fund $ 1.18 % |
| Expenses Paid, Amount | $ 61 |
| Expense Ratio, Percent | 1.18% |
| Material Change Date | Jul. 01, 2024 |
| Net Assets | $ 1,350,136,571 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 5,275,579 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Crowdstrike Holdings, Inc., Class A 3.2 % Cintas Corp. 2.8 % Verisk Analytics, Inc., Class A 2.5 % Cencora, Inc. 2.5 % Amphenol Corp., Class A 2.4 % O'Reilly Automotive, Inc. 2.4 % Gartner, Inc. 2.3 % Waste Connections, Inc. (Canada) 2.3 % Monolithic Power Systems, Inc. 2.1 % Teradyne, Inc. 2.0 % Top Ten as a Group 24.5 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Crowdstrike Holdings, Inc., Class A 3.2 % Cintas Corp. 2.8 % Verisk Analytics, Inc., Class A 2.5 % Cencora, Inc. 2.5 % Amphenol Corp., Class A 2.4 % O'Reilly Automotive, Inc. 2.4 % Gartner, Inc. 2.3 % Waste Connections, Inc. (Canada) 2.3 % Monolithic Power Systems, Inc. 2.1 % Teradyne, Inc. 2.0 % Top Ten as a Group 24.5 % |
| Material Fund Change [Text Block] | Recent Fund Changes This is a summary of certain changes to the Fund since January 1, 2024. For more complete https://wealth.amg.com/resources/order-literature Effective July 1, 2024, the management fee for the Fund was reduced from 0.79% to 0.66%, which resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure. |
| Updated Prospectus Phone Number | 800.548.4539 |
| Updated Prospectus Email Address | shareholderservices@amg.com |
| Updated Prospectus Web Address | https://wealth.amg.com/resources/order-literature |
| C000180065 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Mid Cap Growth Fund |
| Class Name | Class I |
| Trading Symbol | TQMIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Mid Cap 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 https://wealth.amg.com/resources/order-literature |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Mid Cap Growth Fund $ 1.03 % |
| Expenses Paid, Amount | $ 53 |
| Expense Ratio, Percent | 1.03% |
| Material Change Date | Jul. 01, 2024 |
| Net Assets | $ 1,350,136,571 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 5,275,579 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Crowdstrike Holdings, Inc., Class A 3.2 % Cintas Corp. 2.8 % Verisk Analytics, Inc., Class A 2.5 % Cencora, Inc. 2.5 % Amphenol Corp., Class A 2.4 % O'Reilly Automotive, Inc. 2.4 % Gartner, Inc. 2.3 % Waste Connections, Inc. (Canada) 2.3 % Monolithic Power Systems, Inc. 2.1 % Teradyne, Inc. 2.0 % Top Ten as a Group 24.5 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Crowdstrike Holdings, Inc., Class A 3.2 % Cintas Corp. 2.8 % Verisk Analytics, Inc., Class A 2.5 % Cencora, Inc. 2.5 % Amphenol Corp., Class A 2.4 % O'Reilly Automotive, Inc. 2.4 % Gartner, Inc. 2.3 % Waste Connections, Inc. (Canada) 2.3 % Monolithic Power Systems, Inc. 2.1 % Teradyne, Inc. 2.0 % Top Ten as a Group 24.5 % |
| Material Fund Change [Text Block] | Recent Fund Changes This is a summary of certain changes to the Fund since January 1, 2024. For more complete https://wealth.amg.com/resources/order-literature Effective July 1, 2024, the management fee for the Fund was reduced from 0.79% to 0.66%, which resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure. |
| Updated Prospectus Phone Number | 800.548.4539 |
| Updated Prospectus Email Address | shareholderservices@amg.com |
| Updated Prospectus Web Address | https://wealth.amg.com/resources/order-literature |
| C000027322 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Mid Cap Growth Fund |
| Class Name | Class Z |
| Trading Symbol | TMDIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Mid Cap 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 https://wealth.amg.com/resources/order-literature |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Mid Cap Growth Fund $ 0.98 % |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 0.98% |
| Material Change Date | Jul. 01, 2024 |
| Net Assets | $ 1,350,136,571 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 5,275,579 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Crowdstrike Holdings, Inc., Class A 3.2 % Cintas Corp. 2.8 % Verisk Analytics, Inc., Class A 2.5 % Cencora, Inc. 2.5 % Amphenol Corp., Class A 2.4 % O'Reilly Automotive, Inc. 2.4 % Gartner, Inc. 2.3 % Waste Connections, Inc. (Canada) 2.3 % Monolithic Power Systems, Inc. 2.1 % Teradyne, Inc. 2.0 % Top Ten as a Group 24.5 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Crowdstrike Holdings, Inc., Class A 3.2 % Cintas Corp. 2.8 % Verisk Analytics, Inc., Class A 2.5 % Cencora, Inc. 2.5 % Amphenol Corp., Class A 2.4 % O'Reilly Automotive, Inc. 2.4 % Gartner, Inc. 2.3 % Waste Connections, Inc. (Canada) 2.3 % Monolithic Power Systems, Inc. 2.1 % Teradyne, Inc. 2.0 % Top Ten as a Group 24.5 % |
| Material Fund Change [Text Block] | Recent Fund Changes This is a summary of certain changes to the Fund since January 1, 2024. For more complete https://wealth.amg.com/resources/order-literature Effective July 1, 2024, the management fee for the Fund was reduced from 0.79% to 0.66%, which resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure. |
| Updated Prospectus Phone Number | 800.548.4539 |
| Updated Prospectus Email Address | shareholderservices@amg.com |
| Updated Prospectus Web Address | https://wealth.amg.com/resources/order-literature |
| C000078885 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Municipal Enhanced Yield Fund |
| Class Name | Class N |
| Trading Symbol | GWMNX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Municipal Enhanced Yield 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Municipal Enhanced Yield Fund $ 0.99 % |
| Expenses Paid, Amount | $ 49 |
| Expense Ratio, Percent | 0.99% |
| Net Assets | $ 203,804,926 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 365,630 |
| Investment Company Portfolio Turnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and ratings are shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 3.9 % Public Authority for Colorado Energy Natural Gas Purchase Revenue, 6.500%, 11/15/38 3.2 % Richland County School District No 2, Series A, 1.875%, 03/01/38 3.0 % City of Chattanooga Electric, 2.000%, 09/01/40 2.7 % Philadelphia Authority for Industrial Development, 5.250%, 11/01/52 2.7 % Pennsylvania Economic Development Financing Authority, 5.250%, 06/30/53 2.6 % Central Plains Energy Project #3, Series A, 5.000%, 09/01/42 2.5 % New York Transportation Development Corp., 4.000%, 04/30/53 2.3 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 2.3 % Escambia County Health Facilities Authority, 4.000%, 08/15/50 2.2 % Top Ten as a Group 27.4 % Portfolio Breakdown Ratings |
| Largest Holdings [Text Block] | Top Ten Holdings Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 3.9 % Public Authority for Colorado Energy Natural Gas Purchase Revenue, 6.500%, 11/15/38 3.2 % Richland County School District No 2, Series A, 1.875%, 03/01/38 3.0 % City of Chattanooga Electric, 2.000%, 09/01/40 2.7 % Philadelphia Authority for Industrial Development, 5.250%, 11/01/52 2.7 % Pennsylvania Economic Development Financing Authority, 5.250%, 06/30/53 2.6 % Central Plains Energy Project #3, Series A, 5.000%, 09/01/42 2.5 % New York Transportation Development Corp., 4.000%, 04/30/53 2.3 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 2.3 % Escambia County Health Facilities Authority, 4.000%, 08/15/50 2.2 % Top Ten as a Group 27.4 % |
| C000069909 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Municipal Enhanced Yield Fund |
| Class Name | Class I |
| Trading Symbol | GWMEX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Municipal Enhanced Yield 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Municipal Enhanced Yield Fund $ 0.64 % |
| Expenses Paid, Amount | $ 32 |
| Expense Ratio, Percent | 0.64% |
| Net Assets | $ 203,804,926 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 365,630 |
| Investment Company Portfolio Turnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and ratings are shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 3.9 % Public Authority for Colorado Energy Natural Gas Purchase Revenue, 6.500%, 11/15/38 3.2 % Richland County School District No 2, Series A, 1.875%, 03/01/38 3.0 % City of Chattanooga Electric, 2.000%, 09/01/40 2.7 % Philadelphia Authority for Industrial Development, 5.250%, 11/01/52 2.7 % Pennsylvania Economic Development Financing Authority, 5.250%, 06/30/53 2.6 % Central Plains Energy Project #3, Series A, 5.000%, 09/01/42 2.5 % New York Transportation Development Corp., 4.000%, 04/30/53 2.3 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 2.3 % Escambia County Health Facilities Authority, 4.000%, 08/15/50 2.2 % Top Ten as a Group 27.4 % Portfolio Breakdown Ratings |
| Largest Holdings [Text Block] | Top Ten Holdings Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 3.9 % Public Authority for Colorado Energy Natural Gas Purchase Revenue, 6.500%, 11/15/38 3.2 % Richland County School District No 2, Series A, 1.875%, 03/01/38 3.0 % City of Chattanooga Electric, 2.000%, 09/01/40 2.7 % Philadelphia Authority for Industrial Development, 5.250%, 11/01/52 2.7 % Pennsylvania Economic Development Financing Authority, 5.250%, 06/30/53 2.6 % Central Plains Energy Project #3, Series A, 5.000%, 09/01/42 2.5 % New York Transportation Development Corp., 4.000%, 04/30/53 2.3 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 2.3 % Escambia County Health Facilities Authority, 4.000%, 08/15/50 2.2 % Top Ten as a Group 27.4 % |
| C000180069 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Municipal Enhanced Yield Fund |
| Class Name | Class Z |
| Trading Symbol | GWMZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Municipal Enhanced Yield 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Municipal Enhanced Yield Fund $ 0.59 % |
| Expenses Paid, Amount | $ 29 |
| Expense Ratio, Percent | 0.59% |
| Net Assets | $ 203,804,926 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 365,630 |
| Investment Company Portfolio Turnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and ratings are shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 3.9 % Public Authority for Colorado Energy Natural Gas Purchase Revenue, 6.500%, 11/15/38 3.2 % Richland County School District No 2, Series A, 1.875%, 03/01/38 3.0 % City of Chattanooga Electric, 2.000%, 09/01/40 2.7 % Philadelphia Authority for Industrial Development, 5.250%, 11/01/52 2.7 % Pennsylvania Economic Development Financing Authority, 5.250%, 06/30/53 2.6 % Central Plains Energy Project #3, Series A, 5.000%, 09/01/42 2.5 % New York Transportation Development Corp., 4.000%, 04/30/53 2.3 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 2.3 % Escambia County Health Facilities Authority, 4.000%, 08/15/50 2.2 % Top Ten as a Group 27.4 % Portfolio Breakdown Ratings |
| Largest Holdings [Text Block] | Top Ten Holdings Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 3.9 % Public Authority for Colorado Energy Natural Gas Purchase Revenue, 6.500%, 11/15/38 3.2 % Richland County School District No 2, Series A, 1.875%, 03/01/38 3.0 % City of Chattanooga Electric, 2.000%, 09/01/40 2.7 % Philadelphia Authority for Industrial Development, 5.250%, 11/01/52 2.7 % Pennsylvania Economic Development Financing Authority, 5.250%, 06/30/53 2.6 % Central Plains Energy Project #3, Series A, 5.000%, 09/01/42 2.5 % New York Transportation Development Corp., 4.000%, 04/30/53 2.3 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 2.3 % Escambia County Health Facilities Authority, 4.000%, 08/15/50 2.2 % Top Ten as a Group 27.4 % |
| C000122076 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare International Small Cap Fund |
| Class Name | Class N |
| Trading Symbol | TCMPX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare International Small Cap Fund $ 1.31 % |
| Expenses Paid, Amount | $ 67 |
| Expense Ratio, Percent | 1.31% |
| Net Assets | $ 144,560,380 |
| Holdings Count | Holding | 89 |
| Advisory Fees Paid, Amount | $ 576,117 |
| Investment Company Portfolio Turnover | 37% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Viscofan, S.A. (Spain) 2.5 % Rakuten Bank, Ltd. (Japan) 2.5 % Nippon Gas Co., Ltd. (Japan) 2.4 % Siegfried Holding AG (Switzerland) 2.4 % Integral Corp. (Japan) 2.2 % Ringkjoebing Landbobank A/S (Denmark) 2.2 % Steadfast Group, Ltd. (Australia) 2.1 % CyberArk Software, Ltd. (Israel) 2.0 % Tate & Lyle PLC (United Kingdom) 2.0 % Rohto Pharmaceutical Co., Ltd. (Japan) 2.0 % Top Ten as a Group 22.3 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Viscofan, S.A. (Spain) 2.5 % Rakuten Bank, Ltd. (Japan) 2.5 % Nippon Gas Co., Ltd. (Japan) 2.4 % Siegfried Holding AG (Switzerland) 2.4 % Integral Corp. (Japan) 2.2 % Ringkjoebing Landbobank A/S (Denmark) 2.2 % Steadfast Group, Ltd. (Australia) 2.1 % CyberArk Software, Ltd. (Israel) 2.0 % Tate & Lyle PLC (United Kingdom) 2.0 % Rohto Pharmaceutical Co., Ltd. (Japan) 2.0 % Top Ten as a Group 22.3 % |
| C000180071 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare International Small Cap Fund |
| Class Name | Class I |
| Trading Symbol | TQTIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare International Small Cap Fund $ 1.12 % |
| Expenses Paid, Amount | $ 57 |
| Expense Ratio, Percent | 1.12% |
| Net Assets | $ 144,560,380 |
| Holdings Count | Holding | 89 |
| Advisory Fees Paid, Amount | $ 576,117 |
| Investment Company Portfolio Turnover | 37% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Viscofan, S.A. (Spain) 2.5 % Rakuten Bank, Ltd. (Japan) 2.5 % Nippon Gas Co., Ltd. (Japan) 2.4 % Siegfried Holding AG (Switzerland) 2.4 % Integral Corp. (Japan) 2.2 % Ringkjoebing Landbobank A/S (Denmark) 2.2 % Steadfast Group, Ltd. (Australia) 2.1 % CyberArk Software, Ltd. (Israel) 2.0 % Tate & Lyle PLC (United Kingdom) 2.0 % Rohto Pharmaceutical Co., Ltd. (Japan) 2.0 % Top Ten as a Group 22.3 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Viscofan, S.A. (Spain) 2.5 % Rakuten Bank, Ltd. (Japan) 2.5 % Nippon Gas Co., Ltd. (Japan) 2.4 % Siegfried Holding AG (Switzerland) 2.4 % Integral Corp. (Japan) 2.2 % Ringkjoebing Landbobank A/S (Denmark) 2.2 % Steadfast Group, Ltd. (Australia) 2.1 % CyberArk Software, Ltd. (Israel) 2.0 % Tate & Lyle PLC (United Kingdom) 2.0 % Rohto Pharmaceutical Co., Ltd. (Japan) 2.0 % Top Ten as a Group 22.3 % |
| C000122075 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare International Small Cap Fund |
| Class Name | Class Z |
| Trading Symbol | TCMIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare International Small Cap Fund $ 1.06 % |
| Expenses Paid, Amount | $ 54 |
| Expense Ratio, Percent | 1.06% |
| Net Assets | $ 144,560,380 |
| Holdings Count | Holding | 89 |
| Advisory Fees Paid, Amount | $ 576,117 |
| Investment Company Portfolio Turnover | 37% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Viscofan, S.A. (Spain) 2.5 % Rakuten Bank, Ltd. (Japan) 2.5 % Nippon Gas Co., Ltd. (Japan) 2.4 % Siegfried Holding AG (Switzerland) 2.4 % Integral Corp. (Japan) 2.2 % Ringkjoebing Landbobank A/S (Denmark) 2.2 % Steadfast Group, Ltd. (Australia) 2.1 % CyberArk Software, Ltd. (Israel) 2.0 % Tate & Lyle PLC (United Kingdom) 2.0 % Rohto Pharmaceutical Co., Ltd. (Japan) 2.0 % Top Ten as a Group 22.3 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Viscofan, S.A. (Spain) 2.5 % Rakuten Bank, Ltd. (Japan) 2.5 % Nippon Gas Co., Ltd. (Japan) 2.4 % Siegfried Holding AG (Switzerland) 2.4 % Integral Corp. (Japan) 2.2 % Ringkjoebing Landbobank A/S (Denmark) 2.2 % Steadfast Group, Ltd. (Australia) 2.1 % CyberArk Software, Ltd. (Israel) 2.0 % Tate & Lyle PLC (United Kingdom) 2.0 % Rohto Pharmaceutical Co., Ltd. (Japan) 2.0 % Top Ten as a Group 22.3 % |
| C000180073 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Emerging Markets Small Cap Fund |
| Class Name | Class N |
| Trading Symbol | TQENX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Emerging Markets 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Emerging Markets Small Cap Fund $ 1.65 % |
| Expenses Paid, Amount | $ 83 |
| Expense Ratio, Percent | 1.65% |
| Net Assets | $ 1,914,529 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 40% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings KINX, Inc. (South Korea) 2.7 % Despegar.com Corp. (Argentina) 2.7 % Raymond, Ltd. (India) 2.4 % WinWay Technology Co., Ltd. (Taiwan) 2.2 % Bora Pharmaceuticals Co., Ltd. (Taiwan) 2.1 % M31 Technology Corp. (Taiwan) 2.0 % Accton Technology Corp. (Taiwan) 1.9 % LIG Nex1 Co., Ltd. (South Korea) 1.9 % ISC Co., Ltd. (South Korea) 1.8 % Arcos Dorados Holdings, Inc., Class A (Uruguay) 1.8 % Top Ten as a Group 21.5 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings KINX, Inc. (South Korea) 2.7 % Despegar.com Corp. (Argentina) 2.7 % Raymond, Ltd. (India) 2.4 % WinWay Technology Co., Ltd. (Taiwan) 2.2 % Bora Pharmaceuticals Co., Ltd. (Taiwan) 2.1 % M31 Technology Corp. (Taiwan) 2.0 % Accton Technology Corp. (Taiwan) 1.9 % LIG Nex1 Co., Ltd. (South Korea) 1.9 % ISC Co., Ltd. (South Korea) 1.8 % Arcos Dorados Holdings, Inc., Class A (Uruguay) 1.8 % Top Ten as a Group 21.5 % |
| C000175128 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Emerging Markets Small Cap Fund |
| Class Name | Class I |
| Trading Symbol | TQEIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Emerging Markets 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Emerging Markets Small Cap Fund $ 1.25 % |
| Expenses Paid, Amount | $ 63 |
| Expense Ratio, Percent | 1.25% |
| Net Assets | $ 1,914,529 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 40% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings KINX, Inc. (South Korea) 2.7 % Despegar.com Corp. (Argentina) 2.7 % Raymond, Ltd. (India) 2.4 % WinWay Technology Co., Ltd. (Taiwan) 2.2 % Bora Pharmaceuticals Co., Ltd. (Taiwan) 2.1 % M31 Technology Corp. (Taiwan) 2.0 % Accton Technology Corp. (Taiwan) 1.9 % LIG Nex1 Co., Ltd. (South Korea) 1.9 % ISC Co., Ltd. (South Korea) 1.8 % Arcos Dorados Holdings, Inc., Class A (Uruguay) 1.8 % Top Ten as a Group 21.5 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings KINX, Inc. (South Korea) 2.7 % Despegar.com Corp. (Argentina) 2.7 % Raymond, Ltd. (India) 2.4 % WinWay Technology Co., Ltd. (Taiwan) 2.2 % Bora Pharmaceuticals Co., Ltd. (Taiwan) 2.1 % M31 Technology Corp. (Taiwan) 2.0 % Accton Technology Corp. (Taiwan) 1.9 % LIG Nex1 Co., Ltd. (South Korea) 1.9 % ISC Co., Ltd. (South Korea) 1.8 % Arcos Dorados Holdings, Inc., Class A (Uruguay) 1.8 % Top Ten as a Group 21.5 % |
| C000175127 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Emerging Markets Small Cap Fund |
| Class Name | Class Z |
| Trading Symbol | TQEZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Emerging Markets 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Emerging Markets Small Cap Fund $ 1.25 % |
| Expenses Paid, Amount | $ 63 |
| Expense Ratio, Percent | 1.25% |
| Net Assets | $ 1,914,529 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 40% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings KINX, Inc. (South Korea) 2.7 % Despegar.com Corp. (Argentina) 2.7 % Raymond, Ltd. (India) 2.4 % WinWay Technology Co., Ltd. (Taiwan) 2.2 % Bora Pharmaceuticals Co., Ltd. (Taiwan) 2.1 % M31 Technology Corp. (Taiwan) 2.0 % Accton Technology Corp. (Taiwan) 1.9 % LIG Nex1 Co., Ltd. (South Korea) 1.9 % ISC Co., Ltd. (South Korea) 1.8 % Arcos Dorados Holdings, Inc., Class A (Uruguay) 1.8 % Top Ten as a Group 21.5 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings KINX, Inc. (South Korea) 2.7 % Despegar.com Corp. (Argentina) 2.7 % Raymond, Ltd. (India) 2.4 % WinWay Technology Co., Ltd. (Taiwan) 2.2 % Bora Pharmaceuticals Co., Ltd. (Taiwan) 2.1 % M31 Technology Corp. (Taiwan) 2.0 % Accton Technology Corp. (Taiwan) 1.9 % LIG Nex1 Co., Ltd. (South Korea) 1.9 % ISC Co., Ltd. (South Korea) 1.8 % Arcos Dorados Holdings, Inc., Class A (Uruguay) 1.8 % Top Ten as a Group 21.5 % |
| C000027325 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Small Cap Growth Fund |
| Class Name | Class N |
| Trading Symbol | TSCPX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Small Cap 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 https://wealth.amg.com/resources/order-literature |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Small Cap Growth Fund $ 1.18 % |
| Expenses Paid, Amount | $ 60 |
| Expense Ratio, Percent | 1.18% |
| Material Change Date | Jul. 01, 2024 |
| Net Assets | $ 166,269,735 |
| Holdings Count | Holding | 82 |
| Advisory Fees Paid, Amount | $ 606,930 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Casella Waste Systems, Inc., Class A 2.8 % CyberArk Software, Ltd. (Israel) 2.7 % Vertex, Inc., Class A 2.5 % JFrog, Ltd. (Israel) 2.5 % BJ's Wholesale Club Holdings, Inc. 2.1 % Victory Capital Holdings, Inc., Class A 2.0 % Matador Resources Co. 1.9 % Hamilton Lane, Inc., Class A 1.9 % Smartsheet, Inc., Class A 1.9 % Esab Corp. 1.9 % Top Ten as a Group 22.2 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Casella Waste Systems, Inc., Class A 2.8 % CyberArk Software, Ltd. (Israel) 2.7 % Vertex, Inc., Class A 2.5 % JFrog, Ltd. (Israel) 2.5 % BJ's Wholesale Club Holdings, Inc. 2.1 % Victory Capital Holdings, Inc., Class A 2.0 % Matador Resources Co. 1.9 % Hamilton Lane, Inc., Class A 1.9 % Smartsheet, Inc., Class A 1.9 % Esab Corp. 1.9 % Top Ten as a Group 22.2 % |
| Material Fund Change [Text Block] | Recent Fund Changes This is a summary of certain changes to the Fund since January 1, 2024. For more complete https://wealth.amg.com/resources/order-literature Effective July 1, 2024, the following fee changes for the Fund took effect and resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure: (i) the management fee for the Fund was reduced from 0.79% to 0.76%; and (ii) the Fund’s existing contractual expense limitation agreement with AMG Funds LLC (the “Investment Manager”) was replaced with a new contractual expense limitation agreement with the Investment Manager pursuant to which the Investment Manager agreed, through at least May 1, 2026, to limit total annual operating expenses (exclusive of taxes, interest (including interest incurred in connection with bank and custody overdrafts and in connection with securities sold short), shareholder servicing fees, distribution and service (12b-1) fees, brokerage commissions and other transaction costs, dividends payable with respect to securities sold short, acquired fund fees and expenses, and extraordinary expenses) of the Fund to the annual rate of 0.96% (reduced from 0.99%) of the Fund’s average daily net assets, subject to later reimbursement by the Fund in certain circumstances. |
| Material Fund Change Expenses [Text Block] | Effective July 1, 2024, the following fee changes for the Fund took effect and resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure: (i) the management fee for the Fund was reduced from 0.79% to 0.76%; and (ii) the Fund’s existing contractual expense limitation agreement with AMG Funds LLC (the “Investment Manager”) was replaced with a new contractual expense limitation agreement with the Investment Manager pursuant to which the Investment Manager agreed, through at least May 1, 2026, to limit total annual operating expenses (exclusive of taxes, interest (including interest incurred in connection with bank and custody overdrafts and in connection with securities sold short), shareholder servicing fees, distribution and service (12b-1) fees, brokerage commissions and other transaction costs, dividends payable with respect to securities sold short, acquired fund fees and expenses, and extraordinary expenses) of the Fund to the annual rate of 0.96% (reduced from 0.99%) of the Fund’s average daily net assets, subject to later reimbursement by the Fund in certain circumstances. |
| Updated Prospectus Phone Number | 800.548.4539 |
| Updated Prospectus Email Address | shareholderservices@amg.com |
| Updated Prospectus Web Address | https://wealth.amg.com/resources/order-literature |
| C000180066 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Small Cap Growth Fund |
| Class Name | Class I |
| Trading Symbol | TSQIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Small Cap 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 https://wealth.amg.com/resources/order-literature |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Small Cap Growth Fund $ 1.05 % |
| Expenses Paid, Amount | $ 53 |
| Expense Ratio, Percent | 1.05% |
| Material Change Date | Jul. 01, 2024 |
| Net Assets | $ 166,269,735 |
| Holdings Count | Holding | 82 |
| Advisory Fees Paid, Amount | $ 606,930 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Casella Waste Systems, Inc., Class A 2.8 % CyberArk Software, Ltd. (Israel) 2.7 % Vertex, Inc., Class A 2.5 % JFrog, Ltd. (Israel) 2.5 % BJ's Wholesale Club Holdings, Inc. 2.1 % Victory Capital Holdings, Inc., Class A 2.0 % Matador Resources Co. 1.9 % Hamilton Lane, Inc., Class A 1.9 % Smartsheet, Inc., Class A 1.9 % Esab Corp. 1.9 % Top Ten as a Group 22.2 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Casella Waste Systems, Inc., Class A 2.8 % CyberArk Software, Ltd. (Israel) 2.7 % Vertex, Inc., Class A 2.5 % JFrog, Ltd. (Israel) 2.5 % BJ's Wholesale Club Holdings, Inc. 2.1 % Victory Capital Holdings, Inc., Class A 2.0 % Matador Resources Co. 1.9 % Hamilton Lane, Inc., Class A 1.9 % Smartsheet, Inc., Class A 1.9 % Esab Corp. 1.9 % Top Ten as a Group 22.2 % |
| Material Fund Change [Text Block] | Recent Fund Changes This is a summary of certain changes to the Fund since January 1, 2024. For more complete https://wealth.amg.com/resources/order-literature Effective July 1, 2024, the following fee changes for the Fund took effect and resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure: (i) the management fee for the Fund was reduced from 0.79% to 0.76%; and (ii) the Fund’s existing contractual expense limitation agreement with AMG Funds LLC (the “Investment Manager”) was replaced with a new contractual expense limitation agreement with the Investment Manager pursuant to which the Investment Manager agreed, through at least May 1, 2026, to limit total annual operating expenses (exclusive of taxes, interest (including interest incurred in connection with bank and custody overdrafts and in connection with securities sold short), shareholder servicing fees, distribution and service (12b-1) fees, brokerage commissions and other transaction costs, dividends payable with respect to securities sold short, acquired fund fees and expenses, and extraordinary expenses) of the Fund to the annual rate of 0.96% (reduced from 0.99%) of the Fund’s average daily net assets, subject to later reimbursement by the Fund in certain circumstances. |
| Material Fund Change Expenses [Text Block] | Effective July 1, 2024, the following fee changes for the Fund took effect and resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure: (i) the management fee for the Fund was reduced from 0.79% to 0.76%; and (ii) the Fund’s existing contractual expense limitation agreement with AMG Funds LLC (the “Investment Manager”) was replaced with a new contractual expense limitation agreement with the Investment Manager pursuant to which the Investment Manager agreed, through at least May 1, 2026, to limit total annual operating expenses (exclusive of taxes, interest (including interest incurred in connection with bank and custody overdrafts and in connection with securities sold short), shareholder servicing fees, distribution and service (12b-1) fees, brokerage commissions and other transaction costs, dividends payable with respect to securities sold short, acquired fund fees and expenses, and extraordinary expenses) of the Fund to the annual rate of 0.96% (reduced from 0.99%) of the Fund’s average daily net assets, subject to later reimbursement by the Fund in certain circumstances. |
| Updated Prospectus Phone Number | 800.548.4539 |
| Updated Prospectus Email Address | shareholderservices@amg.com |
| Updated Prospectus Web Address | https://wealth.amg.com/resources/order-literature |
| C000027324 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Small Cap Growth Fund |
| Class Name | Class Z |
| Trading Symbol | TSCIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Small Cap 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 https://wealth.amg.com/resources/order-literature |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Small Cap Growth Fund $ 0.98 % |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 0.98% |
| Material Change Date | Jul. 01, 2024 |
| Net Assets | $ 166,269,735 |
| Holdings Count | Holding | 82 |
| Advisory Fees Paid, Amount | $ 606,930 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Casella Waste Systems, Inc., Class A 2.8 % CyberArk Software, Ltd. (Israel) 2.7 % Vertex, Inc., Class A 2.5 % JFrog, Ltd. (Israel) 2.5 % BJ's Wholesale Club Holdings, Inc. 2.1 % Victory Capital Holdings, Inc., Class A 2.0 % Matador Resources Co. 1.9 % Hamilton Lane, Inc., Class A 1.9 % Smartsheet, Inc., Class A 1.9 % Esab Corp. 1.9 % Top Ten as a Group 22.2 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Casella Waste Systems, Inc., Class A 2.8 % CyberArk Software, Ltd. (Israel) 2.7 % Vertex, Inc., Class A 2.5 % JFrog, Ltd. (Israel) 2.5 % BJ's Wholesale Club Holdings, Inc. 2.1 % Victory Capital Holdings, Inc., Class A 2.0 % Matador Resources Co. 1.9 % Hamilton Lane, Inc., Class A 1.9 % Smartsheet, Inc., Class A 1.9 % Esab Corp. 1.9 % Top Ten as a Group 22.2 % |
| Material Fund Change [Text Block] | Recent Fund Changes This is a summary of certain changes to the Fund since January 1, 2024. For more complete https://wealth.amg.com/resources/order-literature Effective July 1, 2024, the following fee changes for the Fund took effect and resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure: (i) the management fee for the Fund was reduced from 0.79% to 0.76%; and (ii) the Fund’s existing contractual expense limitation agreement with AMG Funds LLC (the “Investment Manager”) was replaced with a new contractual expense limitation agreement with the Investment Manager pursuant to which the Investment Manager agreed, through at least May 1, 2026, to limit total annual operating expenses (exclusive of taxes, interest (including interest incurred in connection with bank and custody overdrafts and in connection with securities sold short), shareholder servicing fees, distribution and service (12b-1) fees, brokerage commissions and other transaction costs, dividends payable with respect to securities sold short, acquired fund fees and expenses, and extraordinary expenses) of the Fund to the annual rate of 0.96% (reduced from 0.99%) of the Fund’s average daily net assets, subject to later reimbursement by the Fund in certain circumstances. |
| Material Fund Change Expenses [Text Block] | Effective July 1, 2024, the following fee changes for the Fund took effect and resulted in the overall reduction of the Fund’s net expense ratios as compared with the Fund’s prior fee structure: (i) the management fee for the Fund was reduced from 0.79% to 0.76%; and (ii) the Fund’s existing contractual expense limitation agreement with AMG Funds LLC (the “Investment Manager”) was replaced with a new contractual expense limitation agreement with the Investment Manager pursuant to which the Investment Manager agreed, through at least May 1, 2026, to limit total annual operating expenses (exclusive of taxes, interest (including interest incurred in connection with bank and custody overdrafts and in connection with securities sold short), shareholder servicing fees, distribution and service (12b-1) fees, brokerage commissions and other transaction costs, dividends payable with respect to securities sold short, acquired fund fees and expenses, and extraordinary expenses) of the Fund to the annual rate of 0.96% (reduced from 0.99%) of the Fund’s average daily net assets, subject to later reimbursement by the Fund in certain circumstances. |
| Updated Prospectus Phone Number | 800.548.4539 |
| Updated Prospectus Email Address | shareholderservices@amg.com |
| Updated Prospectus Web Address | https://wealth.amg.com/resources/order-literature |
| C000077269 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Municipal Bond Fund |
| Class Name | Class N |
| Trading Symbol | GWMTX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Municipal Bond 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Municipal Bond Fund $ 0.72 % |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.72% |
| Net Assets | $ 1,009,911,288 |
| Holdings Count | Holding | 198 |
| Advisory Fees Paid, Amount | $ 731,935 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and ratings are shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Iowa Finance Authority, State Revolving Fund Green Bond, 5.000%, 08/01/30 1.5 % Metropolitan Transportation Authority, Green Bond, Series B, 5.000%, 11/15/27 1.5 % Triborough Bridge & Tunnel Authority, Series C, 5.000%, 11/15/36 1.4 % Commonwealth of Massachusetts, Series A, 5.000%, 03/01/32 1.3 % State of Maryland, Department of Transportation, 5.000%, 09/01/29 1.3 % State of Maryland, Department of Transportation, 5.000%, 10/01/28 1.2 % Louisiana Stadium & Exposition District, Series A, 5.000%, 07/01/42 1.2 % City of San Antonio Electric & Gas Systems, Series A, 5.000%, 02/01/31 1.2 % State of Illinois, Series B, 5.000%, 05/01/34 1.1 % State of Wisconsin Transportation, Series 2, 5.000%, 07/01/29 1.1 % Top Ten as a Group 12.8 % Portfolio Breakdown Ratings |
| Largest Holdings [Text Block] | Top Ten Holdings Iowa Finance Authority, State Revolving Fund Green Bond, 5.000%, 08/01/30 1.5 % Metropolitan Transportation Authority, Green Bond, Series B, 5.000%, 11/15/27 1.5 % Triborough Bridge & Tunnel Authority, Series C, 5.000%, 11/15/36 1.4 % Commonwealth of Massachusetts, Series A, 5.000%, 03/01/32 1.3 % State of Maryland, Department of Transportation, 5.000%, 09/01/29 1.3 % State of Maryland, Department of Transportation, 5.000%, 10/01/28 1.2 % Louisiana Stadium & Exposition District, Series A, 5.000%, 07/01/42 1.2 % City of San Antonio Electric & Gas Systems, Series A, 5.000%, 02/01/31 1.2 % State of Illinois, Series B, 5.000%, 05/01/34 1.1 % State of Wisconsin Transportation, Series 2, 5.000%, 07/01/29 1.1 % Top Ten as a Group 12.8 % |
| C000077267 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Municipal Bond Fund |
| Class Name | Class I |
| Trading Symbol | GWMIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Municipal Bond 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Municipal Bond Fund $ 0.39 % |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.39% |
| Net Assets | $ 1,009,911,288 |
| Holdings Count | Holding | 198 |
| Advisory Fees Paid, Amount | $ 731,935 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and ratings are shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Iowa Finance Authority, State Revolving Fund Green Bond, 5.000%, 08/01/30 1.5 % Metropolitan Transportation Authority, Green Bond, Series B, 5.000%, 11/15/27 1.5 % Triborough Bridge & Tunnel Authority, Series C, 5.000%, 11/15/36 1.4 % Commonwealth of Massachusetts, Series A, 5.000%, 03/01/32 1.3 % State of Maryland, Department of Transportation, 5.000%, 09/01/29 1.3 % State of Maryland, Department of Transportation, 5.000%, 10/01/28 1.2 % Louisiana Stadium & Exposition District, Series A, 5.000%, 07/01/42 1.2 % City of San Antonio Electric & Gas Systems, Series A, 5.000%, 02/01/31 1.2 % State of Illinois, Series B, 5.000%, 05/01/34 1.1 % State of Wisconsin Transportation, Series 2, 5.000%, 07/01/29 1.1 % Top Ten as a Group 12.8 % Portfolio Breakdown Ratings |
| Largest Holdings [Text Block] | Top Ten Holdings Iowa Finance Authority, State Revolving Fund Green Bond, 5.000%, 08/01/30 1.5 % Metropolitan Transportation Authority, Green Bond, Series B, 5.000%, 11/15/27 1.5 % Triborough Bridge & Tunnel Authority, Series C, 5.000%, 11/15/36 1.4 % Commonwealth of Massachusetts, Series A, 5.000%, 03/01/32 1.3 % State of Maryland, Department of Transportation, 5.000%, 09/01/29 1.3 % State of Maryland, Department of Transportation, 5.000%, 10/01/28 1.2 % Louisiana Stadium & Exposition District, Series A, 5.000%, 07/01/42 1.2 % City of San Antonio Electric & Gas Systems, Series A, 5.000%, 02/01/31 1.2 % State of Illinois, Series B, 5.000%, 05/01/34 1.1 % State of Wisconsin Transportation, Series 2, 5.000%, 07/01/29 1.1 % Top Ten as a Group 12.8 % |
| C000115981 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Fund |
| Class Name | Class I |
| Trading Symbol | YACKX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Fund $ 0.70 % |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.70% |
| Net Assets | $ 8,307,516,262 |
| Holdings Count | Holding | 68 |
| Advisory Fees Paid, Amount | $ 17,953,514 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Canadian Natural Resources, Ltd. (Canada) 7.0 % Bolloré SE (France) 6.8 % Samsung Electronics Co., Ltd., 1.560% (South Korea) 6.1 % Microsoft Corp. 4.3 % Alphabet, Inc., Class C 4.2 % The Charles Schwab Corp. 2.8 % PepsiCo, Inc. 2.8 % News Corp., Class A 2.7 % The Procter & Gamble Co. 2.6 % U-Haul Holding Co., Non-Voting Shares 2.1 % Top Ten as a Group 41.4 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Canadian Natural Resources, Ltd. (Canada) 7.0 % Bolloré SE (France) 6.8 % Samsung Electronics Co., Ltd., 1.560% (South Korea) 6.1 % Microsoft Corp. 4.3 % Alphabet, Inc., Class C 4.2 % The Charles Schwab Corp. 2.8 % PepsiCo, Inc. 2.8 % News Corp., Class A 2.7 % The Procter & Gamble Co. 2.6 % U-Haul Holding Co., Non-Voting Shares 2.1 % Top Ten as a Group 41.4 % |
| C000157696 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small/Mid Cap Core Fund |
| Class Name | Class N |
| Trading Symbol | GWGVX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small/Mid Cap Core 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small/Mid Cap Core Fund $ 1.07 % |
| Expenses Paid, Amount | $ 54 |
| Expense Ratio, Percent | 1.07% |
| Net Assets | $ 707,862,215 |
| Holdings Count | Holding | 88 |
| Advisory Fees Paid, Amount | $ 2,151,504 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings BJ's Wholesale Club Holdings, Inc. 2.3 % Texas Roadhouse, Inc. 2.2 % CyberArk Software, Ltd. (Israel) 2.0 % Piper Sandler Cos. 1.9 % Entegris, Inc. 1.8 % Manhattan Associates, Inc. 1.8 % Comfort Systems USA, Inc. 1.7 % Cavco Industries, Inc. 1.7 % Voya Financial, Inc. 1.7 % Element Solutions, Inc. 1.6 % Top Ten as a Group 18.7 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings BJ's Wholesale Club Holdings, Inc. 2.3 % Texas Roadhouse, Inc. 2.2 % CyberArk Software, Ltd. (Israel) 2.0 % Piper Sandler Cos. 1.9 % Entegris, Inc. 1.8 % Manhattan Associates, Inc. 1.8 % Comfort Systems USA, Inc. 1.7 % Cavco Industries, Inc. 1.7 % Voya Financial, Inc. 1.7 % Element Solutions, Inc. 1.6 % Top Ten as a Group 18.7 % |
| C000157694 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small/Mid Cap Core Fund |
| Class Name | Class I |
| Trading Symbol | GWGIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small/Mid Cap Core 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small/Mid Cap Core Fund $ 0.87 % |
| Expenses Paid, Amount | $ 44 |
| Expense Ratio, Percent | 0.87% |
| Net Assets | $ 707,862,215 |
| Holdings Count | Holding | 88 |
| Advisory Fees Paid, Amount | $ 2,151,504 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings BJ's Wholesale Club Holdings, Inc. 2.3 % Texas Roadhouse, Inc. 2.2 % CyberArk Software, Ltd. (Israel) 2.0 % Piper Sandler Cos. 1.9 % Entegris, Inc. 1.8 % Manhattan Associates, Inc. 1.8 % Comfort Systems USA, Inc. 1.7 % Cavco Industries, Inc. 1.7 % Voya Financial, Inc. 1.7 % Element Solutions, Inc. 1.6 % Top Ten as a Group 18.7 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings BJ's Wholesale Club Holdings, Inc. 2.3 % Texas Roadhouse, Inc. 2.2 % CyberArk Software, Ltd. (Israel) 2.0 % Piper Sandler Cos. 1.9 % Entegris, Inc. 1.8 % Manhattan Associates, Inc. 1.8 % Comfort Systems USA, Inc. 1.7 % Cavco Industries, Inc. 1.7 % Voya Financial, Inc. 1.7 % Element Solutions, Inc. 1.6 % Top Ten as a Group 18.7 % |
| C000077272 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Renaissance Large Cap Growth Fund |
| Class Name | Class N |
| Trading Symbol | MRLTX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Renaissance Large Cap 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Renaissance Large Cap Growth Fund $ 1.00 % |
| Expenses Paid, Amount | $ 52 |
| Expense Ratio, Percent | 1% |
| Net Assets | $ 136,520,735 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 258,298 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Apple, Inc. 3.3 % Microsoft Corp. 3.2 % Amazon.com, Inc. 2.7 % Broadcom, Inc. 2.5 % Alphabet, Inc., Class A 2.5 % KLA Corp. 2.3 % Applied Materials, Inc. 2.3 % Meta Platforms, Inc., Class A 2.3 % Lam Research Corp. 2.2 % Motorola Solutions, Inc. 2.0 % Top Ten as a Group 25.3 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Apple, Inc. 3.3 % Microsoft Corp. 3.2 % Amazon.com, Inc. 2.7 % Broadcom, Inc. 2.5 % Alphabet, Inc., Class A 2.5 % KLA Corp. 2.3 % Applied Materials, Inc. 2.3 % Meta Platforms, Inc., Class A 2.3 % Lam Research Corp. 2.2 % Motorola Solutions, Inc. 2.0 % Top Ten as a Group 25.3 % |
| C000077271 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Renaissance Large Cap Growth Fund |
| Class Name | Class I |
| Trading Symbol | MRLSX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Renaissance Large Cap 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Renaissance Large Cap Growth Fund $ 0.73 % |
| Expenses Paid, Amount | $ 38 |
| Expense Ratio, Percent | 0.73% |
| Net Assets | $ 136,520,735 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 258,298 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Apple, Inc. 3.3 % Microsoft Corp. 3.2 % Amazon.com, Inc. 2.7 % Broadcom, Inc. 2.5 % Alphabet, Inc., Class A 2.5 % KLA Corp. 2.3 % Applied Materials, Inc. 2.3 % Meta Platforms, Inc., Class A 2.3 % Lam Research Corp. 2.2 % Motorola Solutions, Inc. 2.0 % Top Ten as a Group 25.3 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Apple, Inc. 3.3 % Microsoft Corp. 3.2 % Amazon.com, Inc. 2.7 % Broadcom, Inc. 2.5 % Alphabet, Inc., Class A 2.5 % KLA Corp. 2.3 % Applied Materials, Inc. 2.3 % Meta Platforms, Inc., Class A 2.3 % Lam Research Corp. 2.2 % Motorola Solutions, Inc. 2.0 % Top Ten as a Group 25.3 % |
| C000077270 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Renaissance Large Cap Growth Fund |
| Class Name | Class Z |
| Trading Symbol | MRLIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Renaissance Large Cap 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Renaissance Large Cap Growth Fund $ 0.66 % |
| Expenses Paid, Amount | $ 35 |
| Expense Ratio, Percent | 0.66% |
| Net Assets | $ 136,520,735 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 258,298 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings Apple, Inc. 3.3 % Microsoft Corp. 3.2 % Amazon.com, Inc. 2.7 % Broadcom, Inc. 2.5 % Alphabet, Inc., Class A 2.5 % KLA Corp. 2.3 % Applied Materials, Inc. 2.3 % Meta Platforms, Inc., Class A 2.3 % Lam Research Corp. 2.2 % Motorola Solutions, Inc. 2.0 % Top Ten as a Group 25.3 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings Apple, Inc. 3.3 % Microsoft Corp. 3.2 % Amazon.com, Inc. 2.7 % Broadcom, Inc. 2.5 % Alphabet, Inc., Class A 2.5 % KLA Corp. 2.3 % Applied Materials, Inc. 2.3 % Meta Platforms, Inc., Class A 2.3 % Lam Research Corp. 2.2 % Motorola Solutions, Inc. 2.0 % Top Ten as a Group 25.3 % |
| C000241081 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Municipal Enhanced SMA Shares |
| Class Name | AMG GW&K Municipal Enhanced SMA Shares |
| Trading Symbol | MESHX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Municipal Enhanced SMA Shares (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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Municipal Enhanced SMA Shares $ 0.00 % |
| Expenses Paid, Amount | $ 0 |
| Expense Ratio, Percent | 0% |
| Net Assets | $ 143,825,618 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 8% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and ratings are shown as a percentage of total long-term investments of the Fund. Top Ten Holdings County of Jefferson Sewer Revenue, 5.500%, 10/01/53 3.6 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 3.3 % Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 2.9 % Pennsylvania Economic Development Financing Authority, (AGM), 5.000%, 12/31/57 2.8 % Metropolitan Transportation Authority, Series 1, Revenue, 4.750%, 11/15/45 2.6 % North Carolina Turnpike Authority, Series A, 5.000%, 01/01/58 2.6 % Florida Housing Finance Corp., Series 3, 4.750%, 07/01/54 2.4 % Massachusetts Development Finance Agency, 5.250%, 07/01/52 2.2 % Louisiana Stadium & Exposition District, Series A, 5.250%, 07/01/53 2.0 % New York Transportation Development Corp., 6.000%, 06/30/54 1.9 % Top Ten as a Group 26.3 % Portfolio Breakdown Ratings |
| Largest Holdings [Text Block] | Top Ten Holdings County of Jefferson Sewer Revenue, 5.500%, 10/01/53 3.6 % Rhode Island Health and Educational Building Corp., 5.250%, 05/15/54 3.3 % Texas Private Activity Bond Surface Transportation Corp., 5.000%, 06/30/58 2.9 % Pennsylvania Economic Development Financing Authority, (AGM), 5.000%, 12/31/57 2.8 % Metropolitan Transportation Authority, Series 1, Revenue, 4.750%, 11/15/45 2.6 % North Carolina Turnpike Authority, Series A, 5.000%, 01/01/58 2.6 % Florida Housing Finance Corp., Series 3, 4.750%, 07/01/54 2.4 % Massachusetts Development Finance Agency, 5.250%, 07/01/52 2.2 % Louisiana Stadium & Exposition District, Series A, 5.250%, 07/01/53 2.0 % New York Transportation Development Corp., 6.000%, 06/30/54 1.9 % Top Ten as a Group 26.3 % |
| C000180072 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small/Mid Cap Core Fund |
| Class Name | Class Z |
| Trading Symbol | GWGZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small/Mid Cap Core 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small/Mid Cap Core Fund $ 0.82 % |
| Expenses Paid, Amount | $ 41 |
| Expense Ratio, Percent | 0.82% |
| Net Assets | $ 707,862,215 |
| Holdings Count | Holding | 88 |
| Advisory Fees Paid, Amount | $ 2,151,504 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings BJ's Wholesale Club Holdings, Inc. 2.3 % Texas Roadhouse, Inc. 2.2 % CyberArk Software, Ltd. (Israel) 2.0 % Piper Sandler Cos. 1.9 % Entegris, Inc. 1.8 % Manhattan Associates, Inc. 1.8 % Comfort Systems USA, Inc. 1.7 % Cavco Industries, Inc. 1.7 % Voya Financial, Inc. 1.7 % Element Solutions, Inc. 1.6 % Top Ten as a Group 18.7 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings BJ's Wholesale Club Holdings, Inc. 2.3 % Texas Roadhouse, Inc. 2.2 % CyberArk Software, Ltd. (Israel) 2.0 % Piper Sandler Cos. 1.9 % Entegris, Inc. 1.8 % Manhattan Associates, Inc. 1.8 % Comfort Systems USA, Inc. 1.7 % Cavco Industries, Inc. 1.7 % Voya Financial, Inc. 1.7 % Element Solutions, Inc. 1.6 % Top Ten as a Group 18.7 % |
| C000069910 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small Cap Core Fund |
| Class Name | Class N |
| Trading Symbol | GWETX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small Cap Core 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small Cap Core Fund $ 1.30 % |
| Expenses Paid, Amount | $ 65 |
| Expense Ratio, Percent | 1.30% |
| Net Assets | $ 619,541,994 |
| Holdings Count | Holding | 96 |
| Advisory Fees Paid, Amount | $ 2,176,779 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings SPX Technologies, Inc. 2.3 % Texas Roadhouse, Inc. 2.1 % Appfolio, Inc., Class A 2.1 % MACOM Technology Solutions Holdings, Inc. 2.0 % Medpace Holdings, Inc. 1.9 % RBC Bearings, Inc. 1.9 % HealthEquity, Inc. 1.8 % Stifel Financial Corp. 1.8 % Matador Resources Co. 1.8 % Novanta, Inc. 1.8 % Top Ten as a Group 19.5 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings SPX Technologies, Inc. 2.3 % Texas Roadhouse, Inc. 2.1 % Appfolio, Inc., Class A 2.1 % MACOM Technology Solutions Holdings, Inc. 2.0 % Medpace Holdings, Inc. 1.9 % RBC Bearings, Inc. 1.9 % HealthEquity, Inc. 1.8 % Stifel Financial Corp. 1.8 % Matador Resources Co. 1.8 % Novanta, Inc. 1.8 % Top Ten as a Group 19.5 % |
| C000069911 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small Cap Core Fund |
| Class Name | Class I |
| Trading Symbol | GWEIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small Cap Core 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small Cap Core Fund $ 0.95 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.95% |
| Net Assets | $ 619,541,994 |
| Holdings Count | Holding | 96 |
| Advisory Fees Paid, Amount | $ 2,176,779 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings SPX Technologies, Inc. 2.3 % Texas Roadhouse, Inc. 2.1 % Appfolio, Inc., Class A 2.1 % MACOM Technology Solutions Holdings, Inc. 2.0 % Medpace Holdings, Inc. 1.9 % RBC Bearings, Inc. 1.9 % HealthEquity, Inc. 1.8 % Stifel Financial Corp. 1.8 % Matador Resources Co. 1.8 % Novanta, Inc. 1.8 % Top Ten as a Group 19.5 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings SPX Technologies, Inc. 2.3 % Texas Roadhouse, Inc. 2.1 % Appfolio, Inc., Class A 2.1 % MACOM Technology Solutions Holdings, Inc. 2.0 % Medpace Holdings, Inc. 1.9 % RBC Bearings, Inc. 1.9 % HealthEquity, Inc. 1.8 % Stifel Financial Corp. 1.8 % Matador Resources Co. 1.8 % Novanta, Inc. 1.8 % Top Ten as a Group 19.5 % |
| C000180070 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K Small Cap Core Fund |
| Class Name | Class Z |
| Trading Symbol | GWEZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG GW&K Small Cap Core 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG GW&K Small Cap Core Fund $ 0.90 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.90% |
| Net Assets | $ 619,541,994 |
| Holdings Count | Holding | 96 |
| Advisory Fees Paid, Amount | $ 2,176,779 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund. Top Ten Holdings SPX Technologies, Inc. 2.3 % Texas Roadhouse, Inc. 2.1 % Appfolio, Inc., Class A 2.1 % MACOM Technology Solutions Holdings, Inc. 2.0 % Medpace Holdings, Inc. 1.9 % RBC Bearings, Inc. 1.9 % HealthEquity, Inc. 1.8 % Stifel Financial Corp. 1.8 % Matador Resources Co. 1.8 % Novanta, Inc. 1.8 % Top Ten as a Group 19.5 % Portfolio Breakdown |
| Largest Holdings [Text Block] | Top Ten Holdings SPX Technologies, Inc. 2.3 % Texas Roadhouse, Inc. 2.1 % Appfolio, Inc., Class A 2.1 % MACOM Technology Solutions Holdings, Inc. 2.0 % Medpace Holdings, Inc. 1.9 % RBC Bearings, Inc. 1.9 % HealthEquity, Inc. 1.8 % Stifel Financial Corp. 1.8 % Matador Resources Co. 1.8 % Novanta, Inc. 1.8 % Top Ten as a Group 19.5 % |
| C000115978 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Focused Fund |
| Class Name | Class N |
| Trading Symbol | YAFFX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman Focused 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Focused Fund $ 1.24 % |
| Expenses Paid, Amount | $ 63 |
| Expense Ratio, Percent | 1.24% |
| Net Assets | $ 3,552,952,953 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 15,877,423 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Samsung Electronics Co., Ltd., 1.560% (South Korea) 10.6 % Bolloré SE (France) 8.3 % Canadian Natural Resources, Ltd. (Canada) 8.1 % Microsoft Corp. 4.4 % Alphabet, Inc., Class C 4.3 % U-Haul Holding Co., Non-Voting Shares 3.1 % KT&G Corp. (South Korea) 2.9 % Fox Corp., Class B 2.7 % News Corp., Class A 2.6 % The Charles Schwab Corp. 2.5 % Top Ten as a Group 49.5 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Samsung Electronics Co., Ltd., 1.560% (South Korea) 10.6 % Bolloré SE (France) 8.3 % Canadian Natural Resources, Ltd. (Canada) 8.1 % Microsoft Corp. 4.4 % Alphabet, Inc., Class C 4.3 % U-Haul Holding Co., Non-Voting Shares 3.1 % KT&G Corp. (South Korea) 2.9 % Fox Corp., Class B 2.7 % News Corp., Class A 2.6 % The Charles Schwab Corp. 2.5 % Top Ten as a Group 49.5 % |
| C000115979 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Focused Fund |
| Class Name | Class I |
| Trading Symbol | YAFIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman Focused 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Focused Fund $ 1.06 % |
| Expenses Paid, Amount | $ 54 |
| Expense Ratio, Percent | 1.06% |
| Net Assets | $ 3,552,952,953 |
| Holdings Count | Holding | 60 |
| Advisory Fees Paid, Amount | $ 15,877,423 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Samsung Electronics Co., Ltd., 1.560% (South Korea) 10.6 % Bolloré SE (France) 8.3 % Canadian Natural Resources, Ltd. (Canada) 8.1 % Microsoft Corp. 4.4 % Alphabet, Inc., Class C 4.3 % U-Haul Holding Co., Non-Voting Shares 3.1 % KT&G Corp. (South Korea) 2.9 % Fox Corp., Class B 2.7 % News Corp., Class A 2.6 % The Charles Schwab Corp. 2.5 % Top Ten as a Group 49.5 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Samsung Electronics Co., Ltd., 1.560% (South Korea) 10.6 % Bolloré SE (France) 8.3 % Canadian Natural Resources, Ltd. (Canada) 8.1 % Microsoft Corp. 4.4 % Alphabet, Inc., Class C 4.3 % U-Haul Holding Co., Non-Voting Shares 3.1 % KT&G Corp. (South Korea) 2.9 % Fox Corp., Class B 2.7 % News Corp., Class A 2.6 % The Charles Schwab Corp. 2.5 % Top Ten as a Group 49.5 % |
| C000142969 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Special Opportunities Fund |
| Class Name | Class I |
| Trading Symbol | YASSX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman Special Opportunities 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Special Opportunities Fund $ 0.89 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.89% |
| Net Assets | $ 54,178,053 |
| Holdings Count | Holding | 47 |
| Advisory Fees Paid, Amount | $ 147,646 |
| Investment Company Portfolio Turnover | 6% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Omni Bridgeway, Ltd. (Australia) 7.5 % Legacy Housing Corp. (United States) 5.5 % Total Energy Services, Inc. (Canada) 5.4 % Cie de L'Odet SE (France) 4.7 % Arrow Exploration Corp. (Canada) 4.5 % Italian Wine Brands S.P.A (Italy) 4.4 % Fila S.P.A. (Italy) 4.4 % Texhong International Group, Ltd. (Hong Kong) 4.3 % U-Haul Holding Co., Non-Voting Shares (United States) 4.2 % Macfarlane Group PLC (United Kingdom) 4.2 % Top Ten as a Group 49.1 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Omni Bridgeway, Ltd. (Australia) 7.5 % Legacy Housing Corp. (United States) 5.5 % Total Energy Services, Inc. (Canada) 5.4 % Cie de L'Odet SE (France) 4.7 % Arrow Exploration Corp. (Canada) 4.5 % Italian Wine Brands S.P.A (Italy) 4.4 % Fila S.P.A. (Italy) 4.4 % Texhong International Group, Ltd. (Hong Kong) 4.3 % U-Haul Holding Co., Non-Voting Shares (United States) 4.2 % Macfarlane Group PLC (United Kingdom) 4.2 % Top Ten as a Group 49.1 % |
| C000142968 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG Yacktman Special Opportunities Fund |
| Class Name | Class Z |
| Trading Symbol | YASLX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG Yacktman Special Opportunities 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Yacktman Special Opportunities Fund $ 0.79 % |
| Expenses Paid, Amount | $ 40 |
| Expense Ratio, Percent | 0.79% |
| Net Assets | $ 54,178,053 |
| Holdings Count | Holding | 47 |
| Advisory Fees Paid, Amount | $ 147,646 |
| Investment Company Portfolio Turnover | 6% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Omni Bridgeway, Ltd. (Australia) 7.5 % Legacy Housing Corp. (United States) 5.5 % Total Energy Services, Inc. (Canada) 5.4 % Cie de L'Odet SE (France) 4.7 % Arrow Exploration Corp. (Canada) 4.5 % Italian Wine Brands S.P.A (Italy) 4.4 % Fila S.P.A. (Italy) 4.4 % Texhong International Group, Ltd. (Hong Kong) 4.3 % U-Haul Holding Co., Non-Voting Shares (United States) 4.2 % Macfarlane Group PLC (United Kingdom) 4.2 % Top Ten as a Group 49.1 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Omni Bridgeway, Ltd. (Australia) 7.5 % Legacy Housing Corp. (United States) 5.5 % Total Energy Services, Inc. (Canada) 5.4 % Cie de L'Odet SE (France) 4.7 % Arrow Exploration Corp. (Canada) 4.5 % Italian Wine Brands S.P.A (Italy) 4.4 % Fila S.P.A. (Italy) 4.4 % Texhong International Group, Ltd. (Hong Kong) 4.3 % U-Haul Holding Co., Non-Voting Shares (United States) 4.2 % Macfarlane Group PLC (United Kingdom) 4.2 % Top Ten as a Group 49.1 % |
| C000200605 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Global Small Cap Fund |
| Class Name | Class N |
| Trading Symbol | TSYNX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Global 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Global Small Cap Fund $ 1.25 % |
| Expenses Paid, Amount | $ 62 |
| Expense Ratio, Percent | 1.25% |
| Net Assets | $ 1,795,557 |
| Holdings Count | Holding | 86 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 38% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Webster Financial Corp. (United States) 2.3 % Casella Waste Systems, Inc., Class A (United States) 2.3 % CyberArk Software, Ltd. (Israel) 2.3 % Performance Food Group Co. (United States) 2.3 % Chemed Corp. (United States) 2.3 % National Storage Affiliates Trust, REIT (United States) 2.2 % Regal Rexnord Corp. (United States) 2.2 % Universal Display Corp. (United States) 2.1 % JFrog, Ltd. (Israel) 2.0 % Synaptics, Inc. (United States) 2.0 % Top Ten as a Group 22.0 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Webster Financial Corp. (United States) 2.3 % Casella Waste Systems, Inc., Class A (United States) 2.3 % CyberArk Software, Ltd. (Israel) 2.3 % Performance Food Group Co. (United States) 2.3 % Chemed Corp. (United States) 2.3 % National Storage Affiliates Trust, REIT (United States) 2.2 % Regal Rexnord Corp. (United States) 2.2 % Universal Display Corp. (United States) 2.1 % JFrog, Ltd. (Israel) 2.0 % Synaptics, Inc. (United States) 2.0 % Top Ten as a Group 22.0 % |
| C000200606 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Global Small Cap Fund |
| Class Name | Class I |
| Trading Symbol | TSYIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Global 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Global Small Cap Fund $ 1.00 % |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 1% |
| Net Assets | $ 1,795,557 |
| Holdings Count | Holding | 86 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 38% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Webster Financial Corp. (United States) 2.3 % Casella Waste Systems, Inc., Class A (United States) 2.3 % CyberArk Software, Ltd. (Israel) 2.3 % Performance Food Group Co. (United States) 2.3 % Chemed Corp. (United States) 2.3 % National Storage Affiliates Trust, REIT (United States) 2.2 % Regal Rexnord Corp. (United States) 2.2 % Universal Display Corp. (United States) 2.1 % JFrog, Ltd. (Israel) 2.0 % Synaptics, Inc. (United States) 2.0 % Top Ten as a Group 22.0 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Webster Financial Corp. (United States) 2.3 % Casella Waste Systems, Inc., Class A (United States) 2.3 % CyberArk Software, Ltd. (Israel) 2.3 % Performance Food Group Co. (United States) 2.3 % Chemed Corp. (United States) 2.3 % National Storage Affiliates Trust, REIT (United States) 2.2 % Regal Rexnord Corp. (United States) 2.2 % Universal Display Corp. (United States) 2.1 % JFrog, Ltd. (Israel) 2.0 % Synaptics, Inc. (United States) 2.0 % Top Ten as a Group 22.0 % |
| C000200607 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG TimesSquare Global Small Cap Fund |
| Class Name | Class Z |
| Trading Symbol | TSYZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AMG TimesSquare Global 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 https://wealth.amg.com/resources/order-literature |
| Additional Information Phone Number | 800-548-4539 |
| Additional Information Website | https://wealth.amg.com/resources/order-literature |
| Expenses [Text Block] | Fund Expenses What were the Fund costs for the last six months? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG TimesSquare Global Small Cap Fund $ 1.00 % |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 1% |
| Net Assets | $ 1,795,557 |
| Holdings Count | Holding | 86 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 38% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Net advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of June 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Webster Financial Corp. (United States) 2.3 % Casella Waste Systems, Inc., Class A (United States) 2.3 % CyberArk Software, Ltd. (Israel) 2.3 % Performance Food Group Co. (United States) 2.3 % Chemed Corp. (United States) 2.3 % National Storage Affiliates Trust, REIT (United States) 2.2 % Regal Rexnord Corp. (United States) 2.2 % Universal Display Corp. (United States) 2.1 % JFrog, Ltd. (Israel) 2.0 % Synaptics, Inc. (United States) 2.0 % Top Ten as a Group 22.0 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Webster Financial Corp. (United States) 2.3 % Casella Waste Systems, Inc., Class A (United States) 2.3 % CyberArk Software, Ltd. (Israel) 2.3 % Performance Food Group Co. (United States) 2.3 % Chemed Corp. (United States) 2.3 % National Storage Affiliates Trust, REIT (United States) 2.2 % Regal Rexnord Corp. (United States) 2.2 % Universal Display Corp. (United States) 2.1 % JFrog, Ltd. (Israel) 2.0 % Synaptics, Inc. (United States) 2.0 % Top Ten as a Group 22.0 % |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
| C000176471 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.20% |
| C000176471 [Member] | Samsung Electronics Co Ltd 1 560 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000176471 [Member] | Canadian Natural Resources Ltd Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000176471 [Member] | Samsung C And T Corp South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000176471 [Member] | Hyundai Motor Co 8 200 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000176471 [Member] | Total Energy Services Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000176471 [Member] | HI LEX Corp Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000176471 [Member] | Cie de L Odet SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000176471 [Member] | Unit Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000176471 [Member] | Ocean Wilsons Holdings Ltd Bermuda [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000176471 [Member] | Bollore SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.40% |
| C000176471 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.90% |
| C000176471 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000176471 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.20% |
| C000176471 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000176471 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000176471 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.50% |
| C000176471 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000176471 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000176471 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000176471 [Member] | BERMUDA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000176471 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12% |
| C000176471 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000176471 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.50% |
| C000176471 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000176471 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 19.10% |
| C000176471 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 35.20% |
| C000176471 [Member] | MALAYSIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000176471 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.40% |
| C000176471 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000176471 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000176472 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.20% |
| C000176472 [Member] | Samsung Electronics Co Ltd 1 560 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000176472 [Member] | Canadian Natural Resources Ltd Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000176472 [Member] | Samsung C And T Corp South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000176472 [Member] | Hyundai Motor Co 8 200 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000176472 [Member] | Total Energy Services Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000176472 [Member] | HI LEX Corp Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000176472 [Member] | Cie de L Odet SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000176472 [Member] | Unit Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000176472 [Member] | Ocean Wilsons Holdings Ltd Bermuda [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000176472 [Member] | Bollore SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.40% |
| C000176472 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.90% |
| C000176472 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000176472 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.20% |
| C000176472 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000176472 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000176472 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.50% |
| C000176472 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000176472 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000176472 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000176472 [Member] | BERMUDA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000176472 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12% |
| C000176472 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000176472 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.50% |
| C000176472 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000176472 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 19.10% |
| C000176472 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 35.20% |
| C000176472 [Member] | MALAYSIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000176472 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13.40% |
| C000176472 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000176472 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000056573 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.10% |
| C000056573 [Member] | Piper Sandler Cos [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000056573 [Member] | Federal Agricultural Mortgage Corp Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000056573 [Member] | Primoris Services Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000056573 [Member] | Selective Insurance Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000056573 [Member] | Independence Realty Trust Inc REIT [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000056573 [Member] | Integer Holdings Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000056573 [Member] | Permian Resources Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000056573 [Member] | Boot Barn Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000056573 [Member] | PJT Partners Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000056573 [Member] | CBIZ Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000056573 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000056573 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000056573 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000056573 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000056573 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000056573 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000056573 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000056573 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000056573 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.70% |
| C000056573 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000056573 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000056573 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000056573 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000180067 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.10% |
| C000180067 [Member] | Piper Sandler Cos [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180067 [Member] | Federal Agricultural Mortgage Corp Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180067 [Member] | Primoris Services Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180067 [Member] | Selective Insurance Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180067 [Member] | Independence Realty Trust Inc REIT [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180067 [Member] | Integer Holdings Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180067 [Member] | Permian Resources Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180067 [Member] | Boot Barn Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180067 [Member] | PJT Partners Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180067 [Member] | CBIZ Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180067 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000180067 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000180067 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180067 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000180067 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180067 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000180067 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000180067 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000180067 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.70% |
| C000180067 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000180067 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000180067 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180067 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000180068 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.10% |
| C000180068 [Member] | Piper Sandler Cos [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180068 [Member] | Federal Agricultural Mortgage Corp Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180068 [Member] | Primoris Services Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180068 [Member] | Selective Insurance Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180068 [Member] | Independence Realty Trust Inc REIT [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180068 [Member] | Integer Holdings Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180068 [Member] | Permian Resources Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180068 [Member] | Boot Barn Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180068 [Member] | PJT Partners Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180068 [Member] | CBIZ Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180068 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000180068 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000180068 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180068 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000180068 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180068 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000180068 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000180068 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000180068 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.70% |
| C000180068 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000180068 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000180068 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180068 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000027323 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.50% |
| C000027323 [Member] | Crowdstrike Holdings Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027323 [Member] | Cintas Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000027323 [Member] | Verisk Analytics Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027323 [Member] | Cencora Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027323 [Member] | Amphenol Corp Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000027323 [Member] | O Reilly Automotive Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000027323 [Member] | Gartner Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000027323 [Member] | Waste Connections Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000027323 [Member] | Monolithic Power Systems Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000027323 [Member] | Teradyne Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000027323 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027323 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.10% |
| C000027323 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027323 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000027323 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000027323 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000027323 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.90% |
| C000027323 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000027323 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000027323 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000027323 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000027323 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000180065 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.50% |
| C000180065 [Member] | Crowdstrike Holdings Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000180065 [Member] | Cintas Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000180065 [Member] | Verisk Analytics Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180065 [Member] | Cencora Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180065 [Member] | Amphenol Corp Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000180065 [Member] | O Reilly Automotive Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000180065 [Member] | Gartner Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180065 [Member] | Waste Connections Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180065 [Member] | Monolithic Power Systems Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180065 [Member] | Teradyne Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180065 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000180065 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.10% |
| C000180065 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000180065 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000180065 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000180065 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000180065 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.90% |
| C000180065 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180065 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000180065 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180065 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000180065 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000027322 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.50% |
| C000027322 [Member] | Crowdstrike Holdings Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027322 [Member] | Cintas Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000027322 [Member] | Verisk Analytics Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027322 [Member] | Cencora Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027322 [Member] | Amphenol Corp Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000027322 [Member] | O Reilly Automotive Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000027322 [Member] | Gartner Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000027322 [Member] | Waste Connections Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000027322 [Member] | Monolithic Power Systems Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000027322 [Member] | Teradyne Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000027322 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027322 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.10% |
| C000027322 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000027322 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000027322 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000027322 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.40% |
| C000027322 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.90% |
| C000027322 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000027322 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000027322 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000027322 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000027322 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000078885 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.40% |
| C000078885 [Member] | Texas Private Activity Bond Surface Transportation Corp 5 000 06 30 58 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000078885 [Member] | Public Authority for Colorado Energy Natural Gas Purchase Revenue 6 500 11 15 38 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000078885 [Member] | Richland County School District No 2 Series A 1 875 03 01 38 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000078885 [Member] | City of Chattanooga Electric 2 000 09 01 40 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000078885 [Member] | Philadelphia Authority for Industrial Development 5 250 11 01 52 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000078885 [Member] | Pennsylvania Economic Development Financing Authority 5 250 06 30 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000078885 [Member] | Central Plains Energy Project 3 Series A 5 000 09 01 42 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000078885 [Member] | New York Transportation Development Corp 4 000 04 30 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000078885 [Member] | Rhode Island Health and Educational Building Corp 5 250 05 15 54 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000078885 [Member] | Escambia County Health Facilities Authority 4 000 08 15 50 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000078885 [Member] | AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000078885 [Member] | AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.50% |
| C000078885 [Member] | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 32.90% |
| C000078885 [Member] | BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50% |
| C000078885 [Member] | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| C000078885 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000078885 [Member] | Medical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000078885 [Member] | General Obligation [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000078885 [Member] | Education [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000078885 [Member] | Housing [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000078885 [Member] | Aerospace Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000078885 [Member] | Transportation Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21% |
| C000078885 [Member] | Industrial Development [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000078885 [Member] | Tobacco Settlement [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000078885 [Member] | Water Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000078885 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000078885 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000069909 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.40% |
| C000069909 [Member] | Texas Private Activity Bond Surface Transportation Corp 5 000 06 30 58 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000069909 [Member] | Public Authority for Colorado Energy Natural Gas Purchase Revenue 6 500 11 15 38 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000069909 [Member] | Richland County School District No 2 Series A 1 875 03 01 38 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000069909 [Member] | City of Chattanooga Electric 2 000 09 01 40 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000069909 [Member] | Philadelphia Authority for Industrial Development 5 250 11 01 52 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000069909 [Member] | Pennsylvania Economic Development Financing Authority 5 250 06 30 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000069909 [Member] | Central Plains Energy Project 3 Series A 5 000 09 01 42 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000069909 [Member] | New York Transportation Development Corp 4 000 04 30 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000069909 [Member] | Rhode Island Health and Educational Building Corp 5 250 05 15 54 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000069909 [Member] | Escambia County Health Facilities Authority 4 000 08 15 50 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000069909 [Member] | AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000069909 [Member] | AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.50% |
| C000069909 [Member] | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 32.90% |
| C000069909 [Member] | BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50% |
| C000069909 [Member] | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| C000069909 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000069909 [Member] | Medical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000069909 [Member] | General Obligation [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000069909 [Member] | Education [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000069909 [Member] | Housing [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000069909 [Member] | Aerospace Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000069909 [Member] | Transportation Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21% |
| C000069909 [Member] | Industrial Development [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000069909 [Member] | Tobacco Settlement [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000069909 [Member] | Water Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000069909 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000069909 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000180069 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.40% |
| C000180069 [Member] | Texas Private Activity Bond Surface Transportation Corp 5 000 06 30 58 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000180069 [Member] | Public Authority for Colorado Energy Natural Gas Purchase Revenue 6 500 11 15 38 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000180069 [Member] | Richland County School District No 2 Series A 1 875 03 01 38 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000180069 [Member] | City of Chattanooga Electric 2 000 09 01 40 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000180069 [Member] | Philadelphia Authority for Industrial Development 5 250 11 01 52 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000180069 [Member] | Pennsylvania Economic Development Financing Authority 5 250 06 30 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000180069 [Member] | Central Plains Energy Project 3 Series A 5 000 09 01 42 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180069 [Member] | New York Transportation Development Corp 4 000 04 30 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180069 [Member] | Rhode Island Health and Educational Building Corp 5 250 05 15 54 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180069 [Member] | Escambia County Health Facilities Authority 4 000 08 15 50 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180069 [Member] | AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000180069 [Member] | AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.50% |
| C000180069 [Member] | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 32.90% |
| C000180069 [Member] | BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50% |
| C000180069 [Member] | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| C000180069 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000180069 [Member] | Medical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| C000180069 [Member] | General Obligation [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000180069 [Member] | Education [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000180069 [Member] | Housing [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000180069 [Member] | Aerospace Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000180069 [Member] | Transportation Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21% |
| C000180069 [Member] | Industrial Development [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000180069 [Member] | Tobacco Settlement [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000180069 [Member] | Water Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000180069 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000180069 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000122076 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.30% |
| C000122076 [Member] | Viscofan S A Spain [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000122076 [Member] | Rakuten Bank Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000122076 [Member] | Nippon Gas Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000122076 [Member] | Siegfried Holding AG Switzerland [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000122076 [Member] | Integral Corp Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000122076 [Member] | Ringkjoebing Landbobank A S Denmark [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000122076 [Member] | Steadfast Group Ltd Australia [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000122076 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000122076 [Member] | Tate And Lyle PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000122076 [Member] | Rohto Pharmaceutical Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000122076 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 20.50% |
| C000122076 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000122076 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000122076 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000122076 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000122076 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000122076 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.30% |
| C000122076 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000122076 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000122076 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000122076 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000122076 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000122076 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.20% |
| C000122076 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.30% |
| C000122076 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 27.70% |
| C000122076 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000122076 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.90% |
| C000122076 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.80% |
| C000122076 [Member] | SPAIN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.80% |
| C000122076 [Member] | FINLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.30% |
| C000122076 [Member] | SWEDEN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000122076 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000122076 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.50%) |
| C000180071 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.30% |
| C000180071 [Member] | Viscofan S A Spain [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180071 [Member] | Rakuten Bank Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180071 [Member] | Nippon Gas Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000180071 [Member] | Siegfried Holding AG Switzerland [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000180071 [Member] | Integral Corp Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180071 [Member] | Ringkjoebing Landbobank A S Denmark [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180071 [Member] | Steadfast Group Ltd Australia [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180071 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180071 [Member] | Tate And Lyle PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180071 [Member] | Rohto Pharmaceutical Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180071 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 20.50% |
| C000180071 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000180071 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000180071 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000180071 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000180071 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000180071 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.30% |
| C000180071 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000180071 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000180071 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000180071 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000180071 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180071 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.20% |
| C000180071 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.30% |
| C000180071 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 27.70% |
| C000180071 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000180071 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.90% |
| C000180071 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.80% |
| C000180071 [Member] | SPAIN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.80% |
| C000180071 [Member] | FINLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.30% |
| C000180071 [Member] | SWEDEN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000180071 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000180071 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.50%) |
| C000122075 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.30% |
| C000122075 [Member] | Viscofan S A Spain [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000122075 [Member] | Rakuten Bank Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000122075 [Member] | Nippon Gas Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000122075 [Member] | Siegfried Holding AG Switzerland [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000122075 [Member] | Integral Corp Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000122075 [Member] | Ringkjoebing Landbobank A S Denmark [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000122075 [Member] | Steadfast Group Ltd Australia [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000122075 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000122075 [Member] | Tate And Lyle PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000122075 [Member] | Rohto Pharmaceutical Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000122075 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 20.50% |
| C000122075 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000122075 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000122075 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000122075 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000122075 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000122075 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.30% |
| C000122075 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000122075 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000122075 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000122075 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000122075 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000122075 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.20% |
| C000122075 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.30% |
| C000122075 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 27.70% |
| C000122075 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000122075 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.90% |
| C000122075 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.80% |
| C000122075 [Member] | SPAIN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.80% |
| C000122075 [Member] | FINLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.30% |
| C000122075 [Member] | SWEDEN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000122075 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000122075 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.50%) |
| C000180073 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000180073 [Member] | KINX Inc South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000180073 [Member] | Despegar com Corp Argentina [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000180073 [Member] | Raymond Ltd India [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000180073 [Member] | WinWay Technology Co Ltd Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180073 [Member] | Bora Pharmaceuticals Co Ltd Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180073 [Member] | M31 Technology Corp Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180073 [Member] | Accton Technology Corp Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180073 [Member] | LIG Nex1 Co Ltd South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180073 [Member] | ISC Co Ltd South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180073 [Member] | Arcos Dorados Holdings Inc Class A Uruguay [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180073 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.60% |
| C000180073 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000180073 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000180073 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000180073 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.90% |
| C000180073 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000180073 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000180073 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000180073 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000180073 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000180073 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000180073 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000180073 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 19.70% |
| C000180073 [Member] | MALAYSIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000180073 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.70% |
| C000180073 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.80% |
| C000180073 [Member] | INDONESIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.70% |
| C000180073 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.50% |
| C000180073 [Member] | MEXICO | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.40% |
| C000180073 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.80% |
| C000180073 [Member] | BRAZIL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000180073 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000180073 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.80%) |
| C000175128 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000175128 [Member] | KINX Inc South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000175128 [Member] | Despegar com Corp Argentina [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000175128 [Member] | Raymond Ltd India [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000175128 [Member] | WinWay Technology Co Ltd Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000175128 [Member] | Bora Pharmaceuticals Co Ltd Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000175128 [Member] | M31 Technology Corp Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000175128 [Member] | Accton Technology Corp Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000175128 [Member] | LIG Nex1 Co Ltd South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000175128 [Member] | ISC Co Ltd South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000175128 [Member] | Arcos Dorados Holdings Inc Class A Uruguay [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000175128 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.60% |
| C000175128 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000175128 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000175128 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000175128 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.90% |
| C000175128 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000175128 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000175128 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000175128 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000175128 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000175128 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000175128 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000175128 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 19.70% |
| C000175128 [Member] | MALAYSIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000175128 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.70% |
| C000175128 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.80% |
| C000175128 [Member] | INDONESIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.70% |
| C000175128 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.50% |
| C000175128 [Member] | MEXICO | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.40% |
| C000175128 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.80% |
| C000175128 [Member] | BRAZIL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000175128 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000175128 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.80%) |
| C000175127 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000175127 [Member] | KINX Inc South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000175127 [Member] | Despegar com Corp Argentina [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000175127 [Member] | Raymond Ltd India [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000175127 [Member] | WinWay Technology Co Ltd Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000175127 [Member] | Bora Pharmaceuticals Co Ltd Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000175127 [Member] | M31 Technology Corp Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000175127 [Member] | Accton Technology Corp Taiwan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000175127 [Member] | LIG Nex1 Co Ltd South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000175127 [Member] | ISC Co Ltd South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000175127 [Member] | Arcos Dorados Holdings Inc Class A Uruguay [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000175127 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.60% |
| C000175127 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000175127 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000175127 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000175127 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.90% |
| C000175127 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000175127 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000175127 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000175127 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000175127 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000175127 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000175127 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000175127 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 19.70% |
| C000175127 [Member] | MALAYSIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000175127 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.70% |
| C000175127 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.80% |
| C000175127 [Member] | INDONESIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.70% |
| C000175127 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.50% |
| C000175127 [Member] | MEXICO | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.40% |
| C000175127 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.80% |
| C000175127 [Member] | BRAZIL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000175127 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000175127 [Member] | Other Assets And Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.80%) |
| C000027325 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.20% |
| C000027325 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000027325 [Member] | BJs Wholesale Club Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000027325 [Member] | Casella Waste Systems Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000027325 [Member] | Vertex Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027325 [Member] | JFrog Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027325 [Member] | Victory Capital Holdings Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000027325 [Member] | Matador Resources Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027325 [Member] | Hamilton Lane Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027325 [Member] | Smartsheet Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027325 [Member] | Esab Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027325 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000027325 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.90% |
| C000027325 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000027325 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000027325 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000027325 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.10% |
| C000027325 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000027325 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000027325 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000027325 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000027325 [Member] | Exchange Traded Funds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000027325 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000027325 [Member] | Other Assets And Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.30%) |
| C000180066 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.20% |
| C000180066 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000180066 [Member] | BJs Wholesale Club Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180066 [Member] | Casella Waste Systems Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000180066 [Member] | Vertex Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180066 [Member] | JFrog Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000180066 [Member] | Victory Capital Holdings Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180066 [Member] | Matador Resources Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180066 [Member] | Hamilton Lane Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180066 [Member] | Smartsheet Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180066 [Member] | Esab Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180066 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000180066 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.90% |
| C000180066 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000180066 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000180066 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000180066 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.10% |
| C000180066 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000180066 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000180066 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000180066 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000180066 [Member] | Exchange Traded Funds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000180066 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000180066 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.30%) |
| C000027324 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.20% |
| C000027324 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000027324 [Member] | BJs Wholesale Club Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000027324 [Member] | Casella Waste Systems Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000027324 [Member] | Vertex Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027324 [Member] | JFrog Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000027324 [Member] | Victory Capital Holdings Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000027324 [Member] | Matador Resources Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027324 [Member] | Hamilton Lane Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027324 [Member] | Smartsheet Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027324 [Member] | Esab Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000027324 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000027324 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.90% |
| C000027324 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000027324 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000027324 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000027324 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.10% |
| C000027324 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.10% |
| C000027324 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000027324 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000027324 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000027324 [Member] | Exchange Traded Funds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000027324 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000027324 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.30%) |
| C000077269 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000077269 [Member] | Louisiana Stadium And Exposition District Series A 5 000 07 01 42 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077269 [Member] | Iowa Finance Authority State Revolving Fund Green Bond 5 000 08 01 30 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000077269 [Member] | Metropolitan Transportation Authority Green Bond Series B 5 000 11 15 27 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000077269 [Member] | Triborough Bridge And Tunnel Authority Series C 5 000 11 15 36 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000077269 [Member] | Commonwealth of Massachusetts Series A 5 000 03 01 32 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077269 [Member] | State of Maryland Department of Transportation 5 000 09 01 29 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077269 [Member] | State of Maryland Department of Transportation 5 000 10 01 28 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077269 [Member] | City of San Antonio Electric And Gas Systems Series A 5 000 02 01 31 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077269 [Member] | State of Illinois Series B 5 000 05 01 34 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077269 [Member] | State of Wisconsin Transportation Series 2 5 000 07 01 29 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077269 [Member] | AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000077269 [Member] | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 20.40% |
| C000077269 [Member] | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| C000077269 [Member] | Aa AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 51.30% |
| C000077269 [Member] | Baa BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.10% |
| C000077269 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000077269 [Member] | Medical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000077269 [Member] | General Obligation [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.20% |
| C000077269 [Member] | Education [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000077269 [Member] | Housing [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077269 [Member] | Aerospace Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000077269 [Member] | Transportation Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.40% |
| C000077269 [Member] | Tobacco Settlement [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077269 [Member] | Water Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000077269 [Member] | Development [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000077269 [Member] | Power [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000077269 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077269 [Member] | Other Assets And Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.40%) |
| C000077267 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.80% |
| C000077267 [Member] | Louisiana Stadium And Exposition District Series A 5 000 07 01 42 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077267 [Member] | Iowa Finance Authority State Revolving Fund Green Bond 5 000 08 01 30 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000077267 [Member] | Metropolitan Transportation Authority Green Bond Series B 5 000 11 15 27 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000077267 [Member] | Triborough Bridge And Tunnel Authority Series C 5 000 11 15 36 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000077267 [Member] | Commonwealth of Massachusetts Series A 5 000 03 01 32 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077267 [Member] | State of Maryland Department of Transportation 5 000 09 01 29 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077267 [Member] | State of Maryland Department of Transportation 5 000 10 01 28 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077267 [Member] | City of San Antonio Electric And Gas Systems Series A 5 000 02 01 31 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077267 [Member] | State of Illinois Series B 5 000 05 01 34 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077267 [Member] | State of Wisconsin Transportation Series 2 5 000 07 01 29 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077267 [Member] | AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000077267 [Member] | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 20.40% |
| C000077267 [Member] | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| C000077267 [Member] | Aa AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 51.30% |
| C000077267 [Member] | Baa BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.10% |
| C000077267 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000077267 [Member] | Medical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000077267 [Member] | General Obligation [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.20% |
| C000077267 [Member] | Education [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000077267 [Member] | Housing [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077267 [Member] | Aerospace Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000077267 [Member] | Transportation Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.40% |
| C000077267 [Member] | Tobacco Settlement [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077267 [Member] | Water Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000077267 [Member] | Development [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000077267 [Member] | Power [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000077267 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077267 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.40%) |
| C000115981 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 41.40% |
| C000115981 [Member] | Samsung Electronics Co Ltd 1 560 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000115981 [Member] | Canadian Natural Resources Ltd Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7% |
| C000115981 [Member] | Bollore SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000115981 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000115981 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000115981 [Member] | The Charles Schwab Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000115981 [Member] | PepsiCo Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000115981 [Member] | News Corp Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000115981 [Member] | The Procter And Gamble Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000115981 [Member] | U Haul Holding Co Non Voting Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000115981 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000115981 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000115981 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000115981 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000115981 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000115981 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000115981 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.30% |
| C000115981 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000115981 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000115981 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000115981 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.70% |
| C000115981 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.60% |
| C000115981 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.40% |
| C000115981 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000115981 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 11.90% |
| C000115981 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 69.50% |
| C000115981 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000115981 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000157696 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000157696 [Member] | Piper Sandler Cos [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000157696 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000157696 [Member] | Entegris Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000157696 [Member] | Manhattan Associates Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000157696 [Member] | Comfort Systems USA Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000157696 [Member] | Cavco Industries Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000157696 [Member] | Voya Financial Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000157696 [Member] | Element Solutions Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000157696 [Member] | BJs Wholesale Club Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000157696 [Member] | Texas Roadhouse Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000157696 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000157696 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000157696 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000157696 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000157696 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.50% |
| C000157696 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000157696 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000157696 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000157696 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000157696 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000157696 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000157696 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000157694 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000157694 [Member] | Piper Sandler Cos [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000157694 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000157694 [Member] | Entegris Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000157694 [Member] | Manhattan Associates Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000157694 [Member] | Comfort Systems USA Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000157694 [Member] | Cavco Industries Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000157694 [Member] | Voya Financial Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000157694 [Member] | Element Solutions Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000157694 [Member] | BJs Wholesale Club Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000157694 [Member] | Texas Roadhouse Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000157694 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000157694 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000157694 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000157694 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000157694 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.50% |
| C000157694 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000157694 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000157694 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000157694 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000157694 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000157694 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000157694 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077272 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.30% |
| C000077272 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077272 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000077272 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077272 [Member] | Broadcom Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077272 [Member] | Alphabet Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077272 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077272 [Member] | Applied Materials Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077272 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077272 [Member] | Lam Research Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000077272 [Member] | Motorola Solutions Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077272 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000077272 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000077272 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000077272 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000077272 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077272 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000077272 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.20% |
| C000077272 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077272 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000077272 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077272 [Member] | Other Assets And Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077271 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.30% |
| C000077271 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077271 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000077271 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077271 [Member] | Broadcom Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077271 [Member] | Alphabet Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077271 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077271 [Member] | Applied Materials Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077271 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077271 [Member] | Lam Research Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000077271 [Member] | Motorola Solutions Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077271 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000077271 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000077271 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000077271 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000077271 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077271 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000077271 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.20% |
| C000077271 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077271 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000077271 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077271 [Member] | Other Assets And Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077270 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.30% |
| C000077270 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077270 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000077270 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077270 [Member] | Broadcom Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077270 [Member] | Alphabet Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077270 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077270 [Member] | Applied Materials Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077270 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077270 [Member] | Lam Research Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000077270 [Member] | Motorola Solutions Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077270 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000077270 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| C000077270 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000077270 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000077270 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077270 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000077270 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.20% |
| C000077270 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077270 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000077270 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077270 [Member] | Other Assets And Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000241081 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.30% |
| C000241081 [Member] | Texas Private Activity Bond Surface Transportation Corp 5 000 06 30 58 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000241081 [Member] | Rhode Island Health and Educational Building Corp 5 250 05 15 54 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000241081 [Member] | County of Jefferson Sewer Revenue 5 500 10 01 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000241081 [Member] | Pennsylvania Economic Development Financing Authority AGM 5 000 12 31 57 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000241081 [Member] | Metropolitan Transportation Authority Series 1 Revenue 4 750 11 15 45 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000241081 [Member] | North Carolina Turnpike Authority Series A 5 000 01 01 58 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000241081 [Member] | Florida Housing Finance Corp Series 3 4 750 07 01 54 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000241081 [Member] | Massachusetts Development Finance Agency 5 250 07 01 52 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000241081 [Member] | Louisiana Stadium And Exposition District Series A 5 250 07 01 53 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000241081 [Member] | New York Transportation Development Corp 6 000 06 30 54 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000241081 [Member] | A [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 33.30% |
| C000241081 [Member] | Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000241081 [Member] | Aaa AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000241081 [Member] | Aa AA [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.80% |
| C000241081 [Member] | Baa BBB [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 35.70% |
| C000241081 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000241081 [Member] | Medical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.90% |
| C000241081 [Member] | General Obligation [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.10% |
| C000241081 [Member] | Education [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000241081 [Member] | Aerospace Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000241081 [Member] | Transportation Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22% |
| C000241081 [Member] | Tobacco Settlement [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000241081 [Member] | Water Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| C000241081 [Member] | Development [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000241081 [Member] | Power [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000241081 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000241081 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000180072 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.70% |
| C000180072 [Member] | Piper Sandler Cos [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180072 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180072 [Member] | Entegris Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180072 [Member] | Manhattan Associates Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180072 [Member] | Comfort Systems USA Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000180072 [Member] | Cavco Industries Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000180072 [Member] | Voya Financial Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000180072 [Member] | Element Solutions Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000180072 [Member] | BJs Wholesale Club Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180072 [Member] | Texas Roadhouse Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000180072 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000180072 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000180072 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000180072 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000180072 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.50% |
| C000180072 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000180072 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000180072 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000180072 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000180072 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180072 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180072 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000069910 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.50% |
| C000069910 [Member] | Texas Roadhouse Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000069910 [Member] | Matador Resources Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069910 [Member] | Appfolio Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000069910 [Member] | MACOM Technology Solutions Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000069910 [Member] | Medpace Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000069910 [Member] | RBC Bearings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000069910 [Member] | HealthEquity Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069910 [Member] | Stifel Financial Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069910 [Member] | SPX Technologies Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000069910 [Member] | Novanta Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069910 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000069910 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.40% |
| C000069910 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000069910 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000069910 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.70% |
| C000069910 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| C000069910 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000069910 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000069910 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000069910 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000069910 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069910 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.90%) |
| C000069911 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.50% |
| C000069911 [Member] | Texas Roadhouse Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000069911 [Member] | Matador Resources Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069911 [Member] | Appfolio Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000069911 [Member] | MACOM Technology Solutions Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000069911 [Member] | Medpace Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000069911 [Member] | RBC Bearings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000069911 [Member] | HealthEquity Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069911 [Member] | Stifel Financial Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069911 [Member] | SPX Technologies Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000069911 [Member] | Novanta Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069911 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000069911 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.40% |
| C000069911 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000069911 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000069911 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.70% |
| C000069911 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| C000069911 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000069911 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000069911 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000069911 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000069911 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000069911 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.90%) |
| C000180070 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.50% |
| C000180070 [Member] | Texas Roadhouse Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180070 [Member] | Matador Resources Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180070 [Member] | Appfolio Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180070 [Member] | MACOM Technology Solutions Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000180070 [Member] | Medpace Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180070 [Member] | RBC Bearings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000180070 [Member] | HealthEquity Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180070 [Member] | Stifel Financial Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180070 [Member] | SPX Technologies Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000180070 [Member] | Novanta Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180070 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000180070 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.40% |
| C000180070 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000180070 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000180070 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.70% |
| C000180070 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| C000180070 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000180070 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000180070 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000180070 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000180070 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000180070 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.90%) |
| C000115978 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.50% |
| C000115978 [Member] | Samsung Electronics Co Ltd 1 560 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000115978 [Member] | Canadian Natural Resources Ltd Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000115978 [Member] | Bollore SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000115978 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000115978 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000115978 [Member] | The Charles Schwab Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000115978 [Member] | News Corp Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000115978 [Member] | U Haul Holding Co Non Voting Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000115978 [Member] | KT And G Corp South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000115978 [Member] | Fox Corp Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000115978 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000115978 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000115978 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.30% |
| C000115978 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000115978 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.60% |
| C000115978 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000115978 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.80% |
| C000115978 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000115978 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000115978 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.70% |
| C000115978 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000115978 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.90% |
| C000115978 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.60% |
| C000115978 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.30% |
| C000115978 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.90% |
| C000115978 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 56.40% |
| C000115978 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000115978 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.70%) |
| C000115979 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.50% |
| C000115979 [Member] | Samsung Electronics Co Ltd 1 560 South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000115979 [Member] | Canadian Natural Resources Ltd Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000115979 [Member] | Bollore SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000115979 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000115979 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000115979 [Member] | The Charles Schwab Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000115979 [Member] | News Corp Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000115979 [Member] | U Haul Holding Co Non Voting Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000115979 [Member] | KT And G Corp South Korea [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000115979 [Member] | Fox Corp Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000115979 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000115979 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000115979 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.30% |
| C000115979 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000115979 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.60% |
| C000115979 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000115979 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.80% |
| C000115979 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000115979 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000115979 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.70% |
| C000115979 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000115979 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.90% |
| C000115979 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.60% |
| C000115979 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.30% |
| C000115979 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.90% |
| C000115979 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 56.40% |
| C000115979 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000115979 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.70%) |
| C000142969 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.10% |
| C000142969 [Member] | Total Energy Services Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000142969 [Member] | Cie de L Odet SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000142969 [Member] | Legacy Housing Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000142969 [Member] | Arrow Exploration Corp Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000142969 [Member] | Italian Wine Brands S P A Italy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000142969 [Member] | Fila S P A Italy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000142969 [Member] | Texhong International Group Ltd Hong Kong [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000142969 [Member] | U Haul Holding Co Non Voting Shares United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000142969 [Member] | Macfarlane Group PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000142969 [Member] | Omni Bridgeway Ltd Australia [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000142969 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.90% |
| C000142969 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.30% |
| C000142969 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000142969 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000142969 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.60% |
| C000142969 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000142969 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.10% |
| C000142969 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000142969 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000142969 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000142969 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000142969 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.50% |
| C000142969 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.80% |
| C000142969 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.50% |
| C000142969 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.40% |
| C000142969 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.50% |
| C000142969 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 21.50% |
| C000142969 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.20% |
| C000142969 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000142969 [Member] | ITALY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.20% |
| C000142969 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000142969 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000142968 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 49.10% |
| C000142968 [Member] | Total Energy Services Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000142968 [Member] | Cie de L Odet SE France [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000142968 [Member] | Legacy Housing Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000142968 [Member] | Arrow Exploration Corp Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000142968 [Member] | Italian Wine Brands S P A Italy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000142968 [Member] | Fila S P A Italy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000142968 [Member] | Texhong International Group Ltd Hong Kong [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000142968 [Member] | U Haul Holding Co Non Voting Shares United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000142968 [Member] | Macfarlane Group PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000142968 [Member] | Omni Bridgeway Ltd Australia [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000142968 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.90% |
| C000142968 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.30% |
| C000142968 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000142968 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000142968 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.60% |
| C000142968 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000142968 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.10% |
| C000142968 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000142968 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000142968 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000142968 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000142968 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.50% |
| C000142968 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.80% |
| C000142968 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.50% |
| C000142968 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.40% |
| C000142968 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.50% |
| C000142968 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 21.50% |
| C000142968 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.20% |
| C000142968 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000142968 [Member] | ITALY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.20% |
| C000142968 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000142968 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000200605 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22% |
| C000200605 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200605 [Member] | JFrog Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000200605 [Member] | Webster Financial Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200605 [Member] | Casella Waste Systems Inc Class A United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200605 [Member] | Performance Food Group Co United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200605 [Member] | Chemed Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200605 [Member] | National Storage Affiliates Trust REIT United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200605 [Member] | Regal Rexnord Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200605 [Member] | Universal Display Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000200605 [Member] | Synaptics Inc United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000200605 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.30% |
| C000200605 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000200605 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000200605 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200605 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000200605 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000200605 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.10% |
| C000200605 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| C000200605 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200605 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.50% |
| C000200605 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000200605 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000200605 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.40% |
| C000200605 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.70% |
| C000200605 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.10% |
| C000200605 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13% |
| C000200605 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 45.70% |
| C000200605 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000200605 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.10% |
| C000200605 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000200605 [Member] | ISRAEL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.90% |
| C000200605 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000200605 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.20%) |
| C000200606 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22% |
| C000200606 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200606 [Member] | JFrog Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000200606 [Member] | Webster Financial Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200606 [Member] | Casella Waste Systems Inc Class A United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200606 [Member] | Performance Food Group Co United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200606 [Member] | Chemed Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200606 [Member] | National Storage Affiliates Trust REIT United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200606 [Member] | Regal Rexnord Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200606 [Member] | Universal Display Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000200606 [Member] | Synaptics Inc United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000200606 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.30% |
| C000200606 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000200606 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000200606 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200606 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000200606 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000200606 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.10% |
| C000200606 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| C000200606 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200606 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.50% |
| C000200606 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000200606 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000200606 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.40% |
| C000200606 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.70% |
| C000200606 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.10% |
| C000200606 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13% |
| C000200606 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 45.70% |
| C000200606 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000200606 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.10% |
| C000200606 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000200606 [Member] | ISRAEL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.90% |
| C000200606 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000200606 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.20%) |
| C000200607 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22% |
| C000200607 [Member] | CyberArk Software Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200607 [Member] | JFrog Ltd Israel [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000200607 [Member] | Webster Financial Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200607 [Member] | Casella Waste Systems Inc Class A United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200607 [Member] | Performance Food Group Co United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200607 [Member] | Chemed Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000200607 [Member] | National Storage Affiliates Trust REIT United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200607 [Member] | Regal Rexnord Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200607 [Member] | Universal Display Corp United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000200607 [Member] | Synaptics Inc United States [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000200607 [Member] | All other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 14.30% |
| C000200607 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000200607 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000200607 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200607 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000200607 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000200607 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.10% |
| C000200607 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| C000200607 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000200607 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.50% |
| C000200607 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000200607 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000200607 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.40% |
| C000200607 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.70% |
| C000200607 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.10% |
| C000200607 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 13% |
| C000200607 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 45.70% |
| C000200607 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000200607 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.10% |
| C000200607 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.20% |
| C000200607 [Member] | ISRAEL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.90% |
| C000200607 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000200607 [Member] | Other Assets less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.20%) |
