You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/dividend-growth-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">issdl@nb.com</span>

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$76	0.69%

Expenses Paid, Amount

$ 76

Expense Ratio, Percent

0.69%

Line Graph [Table Text Block]

	Institutional Class $2,745,300	S&P 500^® Index $3,268,100
12/15/15	$1,000,000	$1,000,000
8/31/16	$1,111,000	$1,090,800
8/31/17	$1,317,000	$1,267,900
8/31/18	$1,454,500	$1,517,200
8/31/19	$1,418,800	$1,561,500
8/31/20	$1,658,800	$1,904,100
8/31/21	$2,242,400	$2,497,500
8/31/22	$2,018,500	$2,217,100
8/31/23	$2,278,600	$2,570,600
8/31/24	$2,745,300	$3,268,100

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	Since Inception 12/15/15
Institutional Class	20.48%	14.11%	12.28%
S&P 500^® Index	27.14%	15.92%	14.54%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.02%/0.70% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Dec. 15, 2015

AssetsNet

$ 104,903,604

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 192,651

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$104,903,604
Number of Portfolio Holdings	56
Portfolio Turnover Rate	18%
Total Investment Advisory Fees Paid	$192,651

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amphenol Corp. Class A	3.9%
Microsoft Corp.	3.8%
QUALCOMM, Inc.	3.6%
Analog Devices, Inc.	3.5%
Applied Materials, Inc.	3.4%
Electronic Arts, Inc.	3.1%
Apple, Inc.	3.1%
Universal Display Corp.	3.0%
AstraZeneca PLC	3.0%
Danaher Corp.	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000163610

Shareholder Report [Line Items]

Fund Name

Dividend Growth Fund

Class Name

Class A

Trading Symbol

NDGAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$116	1.05%

Expenses Paid, Amount

$ 116

Expense Ratio, Percent

1.05%

Line Graph [Table Text Block]

	Class A (including sales charge) 25,090	S&P 500^® Index $32,681
12/15/15	$9,425	$10,000
8/31/16	$10,452	$10,908
8/31/17	$12,345	$12,679
8/31/18	$13,576	$15,172
8/31/19	$13,202	$15,615
8/31/20	$15,369	$19,041
8/31/21	$20,706	$24,975
8/31/22	$18,578	$22,171
8/31/23	$20,902	$25,706
8/31/24	$25,090	$32,681

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	Since Inception 12/15/15
Class A (at NAV)	20.04%	13.70%	11.88%
Class A (including sales charge)	13.15%	12.37%	11.12%
S&P 500^® Index	27.14%	15.92%	14.54%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.45%/1.06% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Dec. 15, 2015

AssetsNet

$ 104,903,604

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 192,651

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$104,903,604
Number of Portfolio Holdings	56
Portfolio Turnover Rate	18%
Total Investment Advisory Fees Paid	$192,651

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amphenol Corp. Class A	3.9%
Microsoft Corp.	3.8%
QUALCOMM, Inc.	3.6%
Analog Devices, Inc.	3.5%
Applied Materials, Inc.	3.4%
Electronic Arts, Inc.	3.1%
Apple, Inc.	3.1%
Universal Display Corp.	3.0%
AstraZeneca PLC	3.0%
Danaher Corp.	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000163611

Shareholder Report [Line Items]

Fund Name

Dividend Growth Fund

Class Name

Class C

Trading Symbol

NDGCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$197	1.80%

Expenses Paid, Amount

$ 197

Expense Ratio, Percent

1.80%

Line Graph [Table Text Block]

	Class C (including sales charge) 24,919	S&P 500^® Index $32,681
12/15/15	$10,000	$10,000
8/31/16	$10,000	$10,908
8/31/17	$11,747	$12,679
8/31/18	$12,824	$15,172
8/31/19	$12,368	$15,615
8/31/20	$14,301	$19,041
8/31/21	$19,118	$24,975
8/31/22	$17,023	$22,171
8/31/23	$19,012	$25,706
8/31/24	$22,653	$32,681

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	Since Inception 12/15/15
Class C (at NAV)	19.15%	12.87%	11.04%
Class C (including sales charge)	18.15%	12.87%	11.04%
S&P 500^® Index	27.14%	15.92%	14.54%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 2.15%/1.81% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Dec. 15, 2015

AssetsNet

$ 104,903,604

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 192,651

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$104,903,604
Number of Portfolio Holdings	56
Portfolio Turnover Rate	18%
Total Investment Advisory Fees Paid	$192,651

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amphenol Corp. Class A	3.9%
Microsoft Corp.	3.8%
QUALCOMM, Inc.	3.6%
Analog Devices, Inc.	3.5%
Applied Materials, Inc.	3.4%
Electronic Arts, Inc.	3.1%
Apple, Inc.	3.1%
Universal Display Corp.	3.0%
AstraZeneca PLC	3.0%
Danaher Corp.	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000163613

Shareholder Report [Line Items]

Fund Name

Dividend Growth Fund

Class Name

Class R6

Trading Symbol

NRDGX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$65	0.59%

Expenses Paid, Amount

$ 65

Expense Ratio, Percent

0.59%

Line Graph [Table Text Block]

	Class R6 27,672	S&P 500^® Index $32,681
12/15/15	$10,000	$10,000
8/31/16	$11,120	$10,908
8/31/17	$13,177	$12,679
8/31/18	$14,562	$15,172
8/31/19	$14,223	$15,615
8/31/20	$16,639	$19,041
8/31/21	$22,520	$24,975
8/31/22	$20,307	$22,171
8/31/23	$22,942	$25,706
8/31/24	$27,672	$32,681

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	Since Inception 12/15/15
Class R6	20.62%	14.24%	12.38%
S&P 500^® Index	27.14%	15.92%	14.54%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.25%/0.60% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Dec. 15, 2015

AssetsNet

$ 104,903,604

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 192,651

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$104,903,604
Number of Portfolio Holdings	56
Portfolio Turnover Rate	18%
Total Investment Advisory Fees Paid	$192,651

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amphenol Corp. Class A	3.9%
Microsoft Corp.	3.8%
QUALCOMM, Inc.	3.6%
Analog Devices, Inc.	3.5%
Applied Materials, Inc.	3.4%
Electronic Arts, Inc.	3.1%
Apple, Inc.	3.1%
Universal Display Corp.	3.0%
AstraZeneca PLC	3.0%
Danaher Corp.	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000069472

Shareholder Report [Line Items]

Fund Name

Emerging Markets Equity Fund

Class Name

Institutional Class

Trading Symbol

NEMIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/emerging-markets-equity-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$126	1.16%

Expenses Paid, Amount

$ 126

Expense Ratio, Percent

1.16%

Line Graph [Table Text Block]

	Institutional Class $1,207,600	MSCI Emerging Markets Index (Net) $1,287,700
8/31/14	$1,000,000	$1,000,000
8/31/15	$787,800	$770,500
8/31/16	$911,000	$861,700
8/31/17	$1,136,700	$1,073,100
8/31/18	$1,108,300	$1,065,800
8/31/19	$1,091,000	$1,019,300
8/31/20	$1,206,500	$1,166,900
8/31/21	$1,400,000	$1,413,400
8/31/22	$1,061,200	$1,105,200
8/31/23	$1,032,600	$1,119,100
8/31/24	$1,207,600	$1,287,700

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Institutional Class	16.95%	2.05%	1.90%
MSCI Emerging Markets Index (Net)	15.07%	4.79%	2.56%

AssetsNet

$ 210,224,919

Holdings Count | Holding

103

Advisory Fees Paid, Amount

$ 2,373,049

InvestmentCompanyPortfolioTurnover

111.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$210,224,919
Number of Portfolio Holdings	103
Portfolio Turnover Rate	111%
Total Investment Advisory Fees Paid	$2,373,049

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Information Technology	29.5%
Financials	20.0%
Industrials	11.2%
Consumer Discretionary	10.3%
Communication Services	7.1%
Health Care	6.5%
Materials	4.8%
Energy	4.7%
Real Estate	1.9%
Consumer Staples	1.5%
Utilities	1.0%
Short-Term Investments	1.5%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Taiwan Semiconductor Manufacturing Co. Ltd.	9.5%
Tencent Holdings Ltd.	4.6%
Samsung Electronics Co. Ltd.	4.4%
Alibaba Group Holding Ltd.	2.2%
China Construction Bank Corp. Class H	1.7%
NVIDIA Corp.	1.7%
Gupshup, Inc., Series F	1.7%
State Street Institutional Treasury Money Market Fund Premier Class	1.6%
SK Hynix, Inc.	1.4%
XPRO India Ltd.	1.4%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000069470

Shareholder Report [Line Items]

Fund Name

Emerging Markets Equity Fund

Class Name

Class A

Trading Symbol

NEMAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$153	1.41%

Expenses Paid, Amount

$ 153

Expense Ratio, Percent

1.41%

Line Graph [Table Text Block]

	Class A (including sales charge) $11,085	MSCI Emerging Markets Index (Net) $12,877
8/31/14	$9,425	$10,000
8/31/15	$7,405	$7,705
8/31/16	$8,538	$8,617
8/31/17	$10,630	$10,731
8/31/18	$10,334	$10,658
8/31/19	$10,152	$10,193
8/31/20	$11,195	$11,669
8/31/21	$12,951	$14,134
8/31/22	$9,789	$11,052
8/31/23	$9,504	$11,191
8/31/24	$11,085	$12,877

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class A (at NAV)	16.63%	1.77%	1.64%
Class A (including sales charge)	9.91%	0.57%	1.04%
MSCI Emerging Markets Index (Net)	15.07%	4.79%	2.56%

AssetsNet

$ 210,224,919

Holdings Count | Holding

103

Advisory Fees Paid, Amount

$ 2,373,049

InvestmentCompanyPortfolioTurnover

111.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$210,224,919
Number of Portfolio Holdings	103
Portfolio Turnover Rate	111%
Total Investment Advisory Fees Paid	$2,373,049

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Information Technology	29.5%
Financials	20.0%
Industrials	11.2%
Consumer Discretionary	10.3%
Communication Services	7.1%
Health Care	6.5%
Materials	4.8%
Energy	4.7%
Real Estate	1.9%
Consumer Staples	1.5%
Utilities	1.0%
Short-Term Investments	1.5%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Taiwan Semiconductor Manufacturing Co. Ltd.	9.5%
Tencent Holdings Ltd.	4.6%
Samsung Electronics Co. Ltd.	4.4%
Alibaba Group Holding Ltd.	2.2%
China Construction Bank Corp. Class H	1.7%
NVIDIA Corp.	1.7%
Gupshup, Inc., Series F	1.7%
State Street Institutional Treasury Money Market Fund Premier Class	1.6%
SK Hynix, Inc.	1.4%
XPRO India Ltd.	1.4%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000069471

Shareholder Report [Line Items]

Fund Name

Emerging Markets Equity Fund

Class Name

Class C

Trading Symbol

NEMCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$233	2.16%

Expenses Paid, Amount

$ 233

Expense Ratio, Percent

2.16%

Line Graph [Table Text Block]

	Class C (including sales charge) $10,914	MSCI Emerging Markets Index (Net) $12,877
8/31/14	$10,000	$10,000
8/31/15	$7,798	$7,705
8/31/16	$8,925	$8,617
8/31/17	$11,028	$10,731
8/31/18	$10,641	$10,658
8/31/19	$10,375	$10,193
8/31/20	$11,358	$11,669
8/31/21	$13,045	$14,134
8/31/22	$9,788	$11,052
8/31/23	$9,424	$11,191
8/31/24	$10,914	$12,877

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class C (at NAV)	15.80%	1.02%	0.88%
Class C (including sales charge)	14.80%	1.02%	0.88%
MSCI Emerging Markets Index (Net)	15.07%	4.79%	2.56%

AssetsNet

$ 210,224,919

Holdings Count | Holding

103

Advisory Fees Paid, Amount

$ 2,373,049

InvestmentCompanyPortfolioTurnover

111.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$210,224,919
Number of Portfolio Holdings	103
Portfolio Turnover Rate	111%
Total Investment Advisory Fees Paid	$2,373,049

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Information Technology	29.5%
Financials	20.0%
Industrials	11.2%
Consumer Discretionary	10.3%
Communication Services	7.1%
Health Care	6.5%
Materials	4.8%
Energy	4.7%
Real Estate	1.9%
Consumer Staples	1.5%
Utilities	1.0%
Short-Term Investments	1.5%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Taiwan Semiconductor Manufacturing Co. Ltd.	9.5%
Tencent Holdings Ltd.	4.6%
Samsung Electronics Co. Ltd.	4.4%
Alibaba Group Holding Ltd.	2.2%
China Construction Bank Corp. Class H	1.7%
NVIDIA Corp.	1.7%
Gupshup, Inc., Series F	1.7%
State Street Institutional Treasury Money Market Fund Premier Class	1.6%
SK Hynix, Inc.	1.4%
XPRO India Ltd.	1.4%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090015

Shareholder Report [Line Items]

Fund Name

Emerging Markets Equity Fund

Class Name

Class R3

Trading Symbol

NEMRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$197	1.82%

Expenses Paid, Amount

$ 197

Expense Ratio, Percent

1.82%

Line Graph [Table Text Block]

	Class R3 $11,299	MSCI Emerging Markets Index (Net) $12,877
8/31/14	$10,000	$10,000
8/31/15	$7,830	$7,705
8/31/16	$8,995	$8,617
8/31/17	$11,149	$10,731
8/31/18	$10,797	$10,658
8/31/19	$10,561	$10,193
8/31/20	$11,601	$11,669
8/31/21	$13,365	$14,134
8/31/22	$10,060	$11,052
8/31/23	$9,729	$11,191
8/31/24	$11,299	$12,877

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class R3	16.15%	1.36%	1.23%
MSCI Emerging Markets Index (Net)	15.07%	4.79%	2.56%

AssetsNet

$ 210,224,919

Holdings Count | Holding

103

Advisory Fees Paid, Amount

$ 2,373,049

InvestmentCompanyPortfolioTurnover

111.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$210,224,919
Number of Portfolio Holdings	103
Portfolio Turnover Rate	111%
Total Investment Advisory Fees Paid	$2,373,049

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Information Technology	29.5%
Financials	20.0%
Industrials	11.2%
Consumer Discretionary	10.3%
Communication Services	7.1%
Health Care	6.5%
Materials	4.8%
Energy	4.7%
Real Estate	1.9%
Consumer Staples	1.5%
Utilities	1.0%
Short-Term Investments	1.5%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Taiwan Semiconductor Manufacturing Co. Ltd.	9.5%
Tencent Holdings Ltd.	4.6%
Samsung Electronics Co. Ltd.	4.4%
Alibaba Group Holding Ltd.	2.2%
China Construction Bank Corp. Class H	1.7%
NVIDIA Corp.	1.7%
Gupshup, Inc., Series F	1.7%
State Street Institutional Treasury Money Market Fund Premier Class	1.6%
SK Hynix, Inc.	1.4%
XPRO India Ltd.	1.4%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000125074

Shareholder Report [Line Items]

Fund Name

Emerging Markets Equity Fund

Class Name

Class R6

Trading Symbol

NREMX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$115	1.06%

Expenses Paid, Amount

$ 115

Expense Ratio, Percent

1.06%

Line Graph [Table Text Block]

	Class R6 $12,181	MSCI Emerging Markets Index (Net) $12,877
8/31/14	$10,000	$10,000
8/31/15	$7,886	$7,705
8/31/16	$9,120	$8,617
8/31/17	$11,391	$10,731
8/31/18	$11,110	$10,658
8/31/19	$10,949	$10,193
8/31/20	$12,123	$11,669
8/31/21	$14,083	$14,134
8/31/22	$10,684	$11,052
8/31/23	$10,410	$11,191
8/31/24	$12,181	$12,877

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class R6	17.02%	2.16%	1.99%
MSCI Emerging Markets Index (Net)	15.07%	4.79%	2.56%

AssetsNet

$ 210,224,919

Holdings Count | Holding

103

Advisory Fees Paid, Amount

$ 2,373,049

InvestmentCompanyPortfolioTurnover

111.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$210,224,919
Number of Portfolio Holdings	103
Portfolio Turnover Rate	111%
Total Investment Advisory Fees Paid	$2,373,049

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Information Technology	29.5%
Financials	20.0%
Industrials	11.2%
Consumer Discretionary	10.3%
Communication Services	7.1%
Health Care	6.5%
Materials	4.8%
Energy	4.7%
Real Estate	1.9%
Consumer Staples	1.5%
Utilities	1.0%
Short-Term Investments	1.5%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Taiwan Semiconductor Manufacturing Co. Ltd.	9.5%
Tencent Holdings Ltd.	4.6%
Samsung Electronics Co. Ltd.	4.4%
Alibaba Group Holding Ltd.	2.2%
China Construction Bank Corp. Class H	1.7%
NVIDIA Corp.	1.7%
Gupshup, Inc., Series F	1.7%
State Street Institutional Treasury Money Market Fund Premier Class	1.6%
SK Hynix, Inc.	1.4%
XPRO India Ltd.	1.4%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000063561

Shareholder Report [Line Items]

Fund Name

Equity Income Fund

Class Name

Institutional Class

Trading Symbol

NBHIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/equity-income-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$80	0.73%

Expenses Paid, Amount

$ 80

Expense Ratio, Percent

0.73%

Line Graph [Table Text Block]

	Institutional Class $2,094,600	Russell 1000^® Index $3,295,200	Russell 1000^® Value Index $2,336,000
8/31/14	$1,000,000	$1,000,000	$1,000,000
8/31/15	$954,000	$1,004,000	$965,200
8/31/16	$1,078,300	$1,121,400	$1,089,900
8/31/17	$1,203,000	$1,302,500	$1,216,100
8/31/18	$1,330,300	$1,560,700	$1,367,700
8/31/19	$1,370,900	$1,599,600	$1,376,200
8/31/20	$1,391,900	$1,959,500	$1,387,700
8/31/21	$1,720,700	$2,591,400	$1,893,500
8/31/22	$1,722,700	$2,255,500	$1,775,600
8/31/23	$1,765,100	$2,602,900	$1,928,200
8/31/24	$2,094,600	$3,295,200	$2,336,000

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	18.67%	8.85%	7.67%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.72%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund's performance compares to an index with characteristics that are more representative of the Fund's investment strategy than the Russell 1000 Index.

AssetsNet

$ 951,349,883

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,489,978

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$951,349,883
Number of Portfolio Holdings	69
Portfolio Turnover Rate	28%
Total Investment Advisory Fees Paid	$4,489,978

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Agnico Eagle Mines Ltd./Mines Agnico Eagle Ltd.	4.1%
AstraZeneca PLC ADR	3.2%
Merck & Co., Inc.	3.2%
Lockheed Martin Corp.	3.1%
JPMorgan Chase & Co.	3.1%
Brixmor Property Group, Inc.	3.0%
Ferrovial SE	2.8%
Wells Fargo & Co.	2.7%
ConocoPhillips	2.7%
International Business Machines Corp.	2.6%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000063559

Shareholder Report [Line Items]

Fund Name

Equity Income Fund

Class Name

Class A

Trading Symbol

NBHAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$119	1.09%

Expenses Paid, Amount

$ 119

Expense Ratio, Percent

1.09%

Line Graph [Table Text Block]

	Class A (including sales charge) $19,019	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$9,425	$10,000	$10,000
2/28/15	$9,425	$10,000	$10,000
8/31/15	$8,953	$10,040	$9,652
8/31/16	$10,085	$11,214	$10,899
8/31/17	$11,212	$13,025	$12,161
8/31/18	$12,356	$15,607	$13,677
8/31/19	$12,687	$15,996	$13,762
8/31/20	$12,831	$19,595	$13,877
8/31/21	$15,807	$25,914	$18,935
8/31/22	$15,765	$22,555	$17,756
8/31/23	$16,095	$26,029	$19,282
8/31/24	$19,019	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	18.17%	8.43%	7.27%
Class A (including sales charge)	11.36%	7.16%	6.64%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.08%. Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund's performance compares to an index with characteristics that are more representative of the Fund's investment strategy than the Russell 1000 Index.

AssetsNet

$ 951,349,883

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,489,978

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$951,349,883
Number of Portfolio Holdings	69
Portfolio Turnover Rate	28%
Total Investment Advisory Fees Paid	$4,489,978

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Agnico Eagle Mines Ltd./Mines Agnico Eagle Ltd.	4.1%
AstraZeneca PLC ADR	3.2%
Merck & Co., Inc.	3.2%
Lockheed Martin Corp.	3.1%
JPMorgan Chase & Co.	3.1%
Brixmor Property Group, Inc.	3.0%
Ferrovial SE	2.8%
Wells Fargo & Co.	2.7%
ConocoPhillips	2.7%
International Business Machines Corp.	2.6%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000063560

Shareholder Report [Line Items]

Fund Name

Equity Income Fund

Class Name

Class C

Trading Symbol

NBHCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$200	1.84%

Expenses Paid, Amount

$ 200

Expense Ratio, Percent

1.84%

Line Graph [Table Text Block]

	Class C (including sales charge) $18,733	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,435	$10,040	$9,652
8/31/16	$10,546	$11,214	$10,899
8/31/17	$11,636	$13,025	$12,161
8/31/18	$12,726	$15,607	$13,677
8/31/19	$12,968	$15,996	$13,762
8/31/20	$13,018	$19,595	$13,877
8/31/21	$15,915	$25,914	$18,935
8/31/22	$15,759	$22,555	$17,756
8/31/23	$15,960	$26,029	$19,282
8/31/24	$18,733	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	17.38%	7.63%	6.48%
Class C (including sales charge)	16.38%	7.63%	6.48%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.83%. Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund's performance compares to an index with characteristics that are more representative of the Fund's investment strategy than the Russell 1000 Index.

AssetsNet

$ 951,349,883

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,489,978

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$951,349,883
Number of Portfolio Holdings	69
Portfolio Turnover Rate	28%
Total Investment Advisory Fees Paid	$4,489,978

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Agnico Eagle Mines Ltd./Mines Agnico Eagle Ltd.	4.1%
AstraZeneca PLC ADR	3.2%
Merck & Co., Inc.	3.2%
Lockheed Martin Corp.	3.1%
JPMorgan Chase & Co.	3.1%
Brixmor Property Group, Inc.	3.0%
Ferrovial SE	2.8%
Wells Fargo & Co.	2.7%
ConocoPhillips	2.7%
International Business Machines Corp.	2.6%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090014

Shareholder Report [Line Items]

Fund Name

Equity Income Fund

Class Name

Class R3

Trading Symbol

NBHRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$149	1.37%

Expenses Paid, Amount

$ 149

Expense Ratio, Percent

1.37%

Line Graph [Table Text Block]

	Class R3 $19,624	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,478	$10,040	$9,652
8/31/16	$10,641	$11,214	$10,899
8/31/17	$11,798	$13,025	$12,161
8/31/18	$12,970	$15,607	$13,677
8/31/19	$13,282	$15,996	$13,762
8/31/20	$13,390	$19,595	$13,877
8/31/21	$16,446	$25,914	$18,935
8/31/22	$16,362	$22,555	$17,756
8/31/23	$16,645	$26,029	$19,282
8/31/24	$19,624	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	17.90%	8.12%	6.97%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.37%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund's performance compares to an index with characteristics that are more representative of the Fund's investment strategy than the Russell 1000 Index.

AssetsNet

$ 951,349,883

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,489,978

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$951,349,883
Number of Portfolio Holdings	69
Portfolio Turnover Rate	28%
Total Investment Advisory Fees Paid	$4,489,978

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Agnico Eagle Mines Ltd./Mines Agnico Eagle Ltd.	4.1%
AstraZeneca PLC ADR	3.2%
Merck & Co., Inc.	3.2%
Lockheed Martin Corp.	3.1%
JPMorgan Chase & Co.	3.1%
Brixmor Property Group, Inc.	3.0%
Ferrovial SE	2.8%
Wells Fargo & Co.	2.7%
ConocoPhillips	2.7%
International Business Machines Corp.	2.6%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000228873

Shareholder Report [Line Items]

Fund Name

Equity Income Fund

Class Name

Class E

Trading Symbol

NBHEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$7	0.06%

Expenses Paid, Amount

$ 7

Expense Ratio, Percent

0.06%

Line Graph [Table Text Block]

	Class E $21,318	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,540	$10,040	$9,652
8/31/16	$10,783	$11,214	$10,899
8/31/17	$12,030	$13,025	$12,161
8/31/18	$13,303	$15,607	$13,677
8/31/19	$13,709	$15,996	$13,762
8/31/20	$13,919	$19,595	$13,877
8/31/21	$17,207	$25,914	$18,935
8/31/22	$17,297	$22,555	$17,756
8/31/23	$17,845	$26,029	$19,282
8/31/24	$21,318	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class E	19.46%	9.23%	7.86%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class E's inception date of January 11, 2022 is that of the Fund's Institutional Class, which had higher expenses than Class E so its performance typically would have been lower than that of Class E. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class E: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.57%/0.06% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund's performance compares to an index with characteristics that are more representative of the Fund's investment strategy than the Russell 1000 Index.

AssetsNet

$ 951,349,883

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,489,978

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$951,349,883
Number of Portfolio Holdings	69
Portfolio Turnover Rate	28%
Total Investment Advisory Fees Paid	$4,489,978

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Agnico Eagle Mines Ltd./Mines Agnico Eagle Ltd.	4.1%
AstraZeneca PLC ADR	3.2%
Merck & Co., Inc.	3.2%
Lockheed Martin Corp.	3.1%
JPMorgan Chase & Co.	3.1%
Brixmor Property Group, Inc.	3.0%
Ferrovial SE	2.8%
Wells Fargo & Co.	2.7%
ConocoPhillips	2.7%
International Business Machines Corp.	2.6%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021351

Shareholder Report [Line Items]

Fund Name

Focus Fund

Class Name

Investor Class

Trading Symbol

NBSSX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/focus-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$103	0.91%

Expenses Paid, Amount

$ 103

Expense Ratio, Percent

0.91%

Line Graph [Table Text Block]

	Investor Class $22,893	MSCI All Country World Index (Net) $23,192
8/31/14	$10,000	$10,000
8/31/15	$10,049	$9,371
8/31/16	$10,721	$10,050
8/31/17	$12,523	$11,770
8/31/18	$14,157	$13,113
8/31/19	$13,825	$13,077
8/31/20	$17,442	$15,237
8/31/21	$23,034	$19,601
8/31/22	$16,199	$16,488
8/31/23	$18,114	$18,788
8/31/24	$22,893	$23,192

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	26.38%	10.61%	8.64%
MSCI All Country World Index (Net)	23.44%	12.14%	8.78%

AssetsNet

$ 719,225,857

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,485,221

InvestmentCompanyPortfolioTurnover

38.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$719,225,857
Number of Portfolio Holdings	51
Portfolio Turnover Rate	38%
Total Investment Advisory Fees Paid	$3,485,221

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amazon.com, Inc.	5.2%
Microsoft Corp.	4.8%
Meta Platforms, Inc. Class A	4.4%
NVIDIA Corp.	4.0%
Apple, Inc.	4.0%
Alphabet, Inc. Class C	3.7%
Boston Scientific Corp.	3.7%
Deutsche Telekom AG	3.5%
Constellation Software, Inc.	2.9%
Visa, Inc. Class A	2.9%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021352

Shareholder Report [Line Items]

Fund Name

Focus Fund

Class Name

Trust Class

Trading Symbol

NBFCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$126	1.11%

Expenses Paid, Amount

$ 126

Expense Ratio, Percent

1.11%

Line Graph [Table Text Block]

	Trust Class $22,454	MSCI All Country World Index (Net) $23,192
8/31/14	$10,000	$10,000
8/31/15	$10,026	$9,371
8/31/16	$10,678	$10,050
8/31/17	$12,452	$11,770
8/31/18	$14,056	$13,113
8/31/19	$13,701	$13,077
8/31/20	$17,251	$15,237
8/31/21	$22,733	$19,601
8/31/22	$15,954	$16,488
8/31/23	$17,802	$18,788
8/31/24	$22,454	$23,192

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	26.13%	10.38%	8.42%
MSCI All Country World Index (Net)	23.44%	12.14%	8.78%

AssetsNet

$ 719,225,857

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,485,221

InvestmentCompanyPortfolioTurnover

38.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$719,225,857
Number of Portfolio Holdings	51
Portfolio Turnover Rate	38%
Total Investment Advisory Fees Paid	$3,485,221

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amazon.com, Inc.	5.2%
Microsoft Corp.	4.8%
Meta Platforms, Inc. Class A	4.4%
NVIDIA Corp.	4.0%
Apple, Inc.	4.0%
Alphabet, Inc. Class C	3.7%
Boston Scientific Corp.	3.7%
Deutsche Telekom AG	3.5%
Constellation Software, Inc.	2.9%
Visa, Inc. Class A	2.9%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021353

Shareholder Report [Line Items]

Fund Name

Focus Fund

Class Name

Advisor Class

Trading Symbol

NBFAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$151	1.34%

Expenses Paid, Amount

$ 151

Expense Ratio, Percent

1.34%

Line Graph [Table Text Block]

	Advisor Class $22,073	MSCI All Country World Index (Net) $23,192
8/31/14	$10,000	$10,000
8/31/15	$10,015	$9,371
8/31/16	$10,649	$10,050
8/31/17	$12,408	$11,770
8/31/18	$13,973	$13,113
8/31/19	$13,599	$13,077
8/31/20	$17,094	$15,237
8/31/21	$22,476	$19,601
8/31/22	$15,749	$16,488
8/31/23	$17,537	$18,788
8/31/24	$22,073	$23,192

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Advisor Class	25.87%	10.17%	8.24%
MSCI All Country World Index (Net)	23.44%	12.14%	8.78%

AssetsNet

$ 719,225,857

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,485,221

InvestmentCompanyPortfolioTurnover

38.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$719,225,857
Number of Portfolio Holdings	51
Portfolio Turnover Rate	38%
Total Investment Advisory Fees Paid	$3,485,221

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amazon.com, Inc.	5.2%
Microsoft Corp.	4.8%
Meta Platforms, Inc. Class A	4.4%
NVIDIA Corp.	4.0%
Apple, Inc.	4.0%
Alphabet, Inc. Class C	3.7%
Boston Scientific Corp.	3.7%
Deutsche Telekom AG	3.5%
Constellation Software, Inc.	2.9%
Visa, Inc. Class A	2.9%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000027739

Shareholder Report [Line Items]

Fund Name

Focus Fund

Class Name

Institutional Class

Trading Symbol

NFALX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$85	0.75%

Expenses Paid, Amount

$ 85

Expense Ratio, Percent

0.75%

Line Graph [Table Text Block]

	Institutional Class $2,325,200	MSCI All Country World Index (Net) $2,319,200
8/31/14	$1,000,000	$1,000,000
8/31/15	$1,006,500	$937,100
8/31/16	$1,075,600	$1,005,000
8/31/17	$1,258,800	$1,177,000
8/31/18	$1,424,900	$1,311,300
8/31/19	$1,394,300	$1,307,700
8/31/20	$1,761,300	$1,523,700
8/31/21	$2,329,300	$1,960,100
8/31/22	$1,640,600	$1,648,800
8/31/23	$1,836,800	$1,878,800
8/31/24	$2,325,200	$2,319,200

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	26.59%	10.77%	8.80%
MSCI All Country World Index (Net)	23.44%	12.14%	8.78%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.77%/0.76% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

AssetsNet

$ 719,225,857

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,485,221

InvestmentCompanyPortfolioTurnover

38.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$719,225,857
Number of Portfolio Holdings	51
Portfolio Turnover Rate	38%
Total Investment Advisory Fees Paid	$3,485,221

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amazon.com, Inc.	5.2%
Microsoft Corp.	4.8%
Meta Platforms, Inc. Class A	4.4%
NVIDIA Corp.	4.0%
Apple, Inc.	4.0%
Alphabet, Inc. Class C	3.7%
Boston Scientific Corp.	3.7%
Deutsche Telekom AG	3.5%
Constellation Software, Inc.	2.9%
Visa, Inc. Class A	2.9%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090012

Shareholder Report [Line Items]

Fund Name

Focus Fund

Class Name

Class A

Trading Symbol

NFAAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$125	1.11%

Expenses Paid, Amount

$ 125

Expense Ratio, Percent

1.11%

Line Graph [Table Text Block]

	Class A (including sales charge) $21,136	MSCI All Country World Index (Net) $23,192
8/31/14	$9,425	$10,000
8/31/15	$9,448	$9,371
8/31/16	$10,064	$10,050
8/31/17	$11,732	$11,770
8/31/18	$13,235	$13,113
8/31/19	$12,902	$13,077
8/31/20	$16,244	$15,237
8/31/21	$21,398	$19,601
8/31/22	$15,016	$16,488
8/31/23	$16,758	$18,788
8/31/24	$21,136	$23,192

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	26.12%	10.38%	8.41%
Class A (including sales charge)	18.85%	9.07%	7.77%
MSCI All Country World Index (Net)	23.44%	12.14%	8.78%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.15%/1.12% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

AssetsNet

$ 719,225,857

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,485,221

InvestmentCompanyPortfolioTurnover

38.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$719,225,857
Number of Portfolio Holdings	51
Portfolio Turnover Rate	38%
Total Investment Advisory Fees Paid	$3,485,221

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amazon.com, Inc.	5.2%
Microsoft Corp.	4.8%
Meta Platforms, Inc. Class A	4.4%
NVIDIA Corp.	4.0%
Apple, Inc.	4.0%
Alphabet, Inc. Class C	3.7%
Boston Scientific Corp.	3.7%
Deutsche Telekom AG	3.5%
Constellation Software, Inc.	2.9%
Visa, Inc. Class A	2.9%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090013

Shareholder Report [Line Items]

Fund Name

Focus Fund

Class Name

Class C

Trading Symbol

NFACX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$209	1.86%

Expenses Paid, Amount

$ 209

Expense Ratio, Percent

1.86%

Line Graph [Table Text Block]

	Class C (including sales charge) $20,807	MSCI All Country World Index (Net) $23,192
8/31/14	$10,000	$10,000
8/31/15	$9,950	$9,371
8/31/16	$10,522	$10,050
8/31/17	$12,180	$11,770
8/31/18	$13,632	$13,113
8/31/19	$13,189	$13,077
8/31/20	$16,481	$15,237
8/31/21	$21,550	$19,601
8/31/22	$15,010	$16,488
8/31/23	$16,625	$18,788
8/31/24	$20,807	$23,192

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	25.16%	9.55%	7.60%
Class C (including sales charge)	24.16%	9.55%	7.60%
MSCI All Country World Index (Net)	23.44%	12.14%	8.78%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.96%/1.87% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC). The CDSC is 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

AssetsNet

$ 719,225,857

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,485,221

InvestmentCompanyPortfolioTurnover

38.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$719,225,857
Number of Portfolio Holdings	51
Portfolio Turnover Rate	38%
Total Investment Advisory Fees Paid	$3,485,221

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Amazon.com, Inc.	5.2%
Microsoft Corp.	4.8%
Meta Platforms, Inc. Class A	4.4%
NVIDIA Corp.	4.0%
Apple, Inc.	4.0%
Alphabet, Inc. Class C	3.7%
Boston Scientific Corp.	3.7%
Deutsche Telekom AG	3.5%
Constellation Software, Inc.	2.9%
Visa, Inc. Class A	2.9%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021336

Shareholder Report [Line Items]

Fund Name

Genesis Fund

Class Name

Investor Class

Trading Symbol

NBGNX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/genesis-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$106	0.99%

Expenses Paid, Amount

$ 106

Expense Ratio, Percent

0.99%

Line Graph [Table Text Block]

	Investor Class $25,768	Russell 3000^® Index $32,071	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000
8/31/15	$10,152	$10,036	$10,003
8/31/16	$11,313	$11,184	$10,862
8/31/17	$12,466	$12,980	$12,483
8/31/18	$15,798	$15,608	$15,659
8/31/19	$15,881	$15,813	$13,640
8/31/20	$18,021	$19,203	$14,461
8/31/21	$23,948	$25,548	$21,270
8/31/22	$20,444	$22,155	$17,466
8/31/23	$22,416	$25,424	$18,278
8/31/24	$25,768	$32,071	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	14.95%	10.16%	9.93%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Investor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.00%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 10,556,129,386

Holdings Count | Holding

112

Advisory Fees Paid, Amount

$ 64,885,976

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$10,556,129,386
Number of Portfolio Holdings	112
Portfolio Turnover Rate	13%
Total Investment Advisory Fees Paid	$64,885,976

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Fair Isaac Corp.	2.2%
Manhattan Associates, Inc.	2.2%
Kirby Corp.	2.1%
Tetra Tech, Inc.	2.0%
SPS Commerce, Inc.	2.0%
RBC Bearings, Inc.	1.9%
CSW Industrials, Inc.	1.9%
Eagle Materials, Inc.	1.9%
Valmont Industries, Inc.	1.7%
Chemed Corp.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021337

Shareholder Report [Line Items]

Fund Name

Genesis Fund

Class Name

Trust Class

Trading Symbol

NBGEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$117	1.09%

Expenses Paid, Amount

$ 117

Expense Ratio, Percent

1.09%

Line Graph [Table Text Block]

	Trust Class $25,547	Russell 3000^® Index $32,071	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000
8/31/15	$10,141	$10,036	$10,003
8/31/16	$11,293	$11,184	$10,862
8/31/17	$12,435	$12,980	$12,483
8/31/18	$15,748	$15,608	$15,659
8/31/19	$15,816	$15,813	$13,640
8/31/20	$17,932	$19,203	$14,461
8/31/21	$23,809	$25,548	$21,270
8/31/22	$20,308	$22,155	$17,466
8/31/23	$22,242	$25,424	$18,278
8/31/24	$25,547	$32,071	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	14.86%	10.06%	9.83%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.09%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 10,556,129,386

Holdings Count | Holding

112

Advisory Fees Paid, Amount

$ 64,885,976

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$10,556,129,386
Number of Portfolio Holdings	112
Portfolio Turnover Rate	13%
Total Investment Advisory Fees Paid	$64,885,976

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Fair Isaac Corp.	2.2%
Manhattan Associates, Inc.	2.2%
Kirby Corp.	2.1%
Tetra Tech, Inc.	2.0%
SPS Commerce, Inc.	2.0%
RBC Bearings, Inc.	1.9%
CSW Industrials, Inc.	1.9%
Eagle Materials, Inc.	1.9%
Valmont Industries, Inc.	1.7%
Chemed Corp.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021338

Shareholder Report [Line Items]

Fund Name

Genesis Fund

Class Name

Advisor Class

Trading Symbol

NBGAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$144	1.34%

Expenses Paid, Amount

$ 144

Expense Ratio, Percent

1.34%

Line Graph [Table Text Block]

	Advisor Class $24,886	Russell 3000^® Index $32,071	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000
8/31/15	$10,111	$10,036	$10,003
8/31/16	$11,230	$11,184	$10,862
8/31/17	$12,332	$12,980	$12,483
8/31/18	$15,576	$15,608	$15,659
8/31/19	$15,604	$15,813	$13,640
8/31/20	$17,649	$19,203	$14,461
8/31/21	$23,372	$25,548	$21,270
8/31/22	$19,881	$22,155	$17,466
8/31/23	$21,724	$25,424	$18,278
8/31/24	$24,886	$32,071	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Advisor Class	14.55%	9.78%	9.55%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Advisor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.34%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 10,556,129,386

Holdings Count | Holding

112

Advisory Fees Paid, Amount

$ 64,885,976

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$10,556,129,386
Number of Portfolio Holdings	112
Portfolio Turnover Rate	13%
Total Investment Advisory Fees Paid	$64,885,976

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Fair Isaac Corp.	2.2%
Manhattan Associates, Inc.	2.2%
Kirby Corp.	2.1%
Tetra Tech, Inc.	2.0%
SPS Commerce, Inc.	2.0%
RBC Bearings, Inc.	1.9%
CSW Industrials, Inc.	1.9%
Eagle Materials, Inc.	1.9%
Valmont Industries, Inc.	1.7%
Chemed Corp.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021339

Shareholder Report [Line Items]

Fund Name

Genesis Fund

Class Name

Institutional Class

Trading Symbol

NBGIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$90	0.84%

Expenses Paid, Amount

$ 90

Expense Ratio, Percent

0.84%

Line Graph [Table Text Block]

	Institutional Class $2,619,200	Russell 3000^® Index $3,207,100	Russell 2000^® Index $2,165,500
8/31/14	$1,000,000	$1,000,000	$1,000,000
8/31/15	$1,016,800	$1,003,600	$1,000,300
8/31/16	$1,134,900	$1,118,400	$1,086,200
8/31/17	$1,252,900	$1,298,000	$1,248,300
8/31/18	$1,590,700	$1,560,800	$1,565,900
8/31/19	$1,601,700	$1,581,300	$1,364,000
8/31/20	$1,820,300	$1,920,300	$1,446,100
8/31/21	$2,422,900	$2,554,800	$2,127,000
8/31/22	$2,071,600	$2,215,500	$1,746,600
8/31/23	$2,275,000	$2,542,400	$1,827,800
8/31/24	$2,619,200	$3,207,100	$2,165,500

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	15.13%	10.34%	10.11%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.84%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 10,556,129,386

Holdings Count | Holding

112

Advisory Fees Paid, Amount

$ 64,885,976

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$10,556,129,386
Number of Portfolio Holdings	112
Portfolio Turnover Rate	13%
Total Investment Advisory Fees Paid	$64,885,976

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Fair Isaac Corp.	2.2%
Manhattan Associates, Inc.	2.2%
Kirby Corp.	2.1%
Tetra Tech, Inc.	2.0%
SPS Commerce, Inc.	2.0%
RBC Bearings, Inc.	1.9%
CSW Industrials, Inc.	1.9%
Eagle Materials, Inc.	1.9%
Valmont Industries, Inc.	1.7%
Chemed Corp.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000125070

Shareholder Report [Line Items]

Fund Name

Genesis Fund

Class Name

Class R6

Trading Symbol

NRGSX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$80	0.74%

Expenses Paid, Amount

$ 80

Expense Ratio, Percent

0.74%

Line Graph [Table Text Block]

	Class R6 $26,421	Russell 3000^® Index $32,071	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000
8/31/15	$10,175	$10,036	$10,003
8/31/16	$11,365	$11,184	$10,862
8/31/17	$12,555	$12,980	$12,483
8/31/18	$15,953	$15,608	$15,659
8/31/19	$16,080	$15,813	$13,640
8/31/20	$18,290	$19,203	$14,461
8/31/21	$24,369	$25,548	$21,270
8/31/22	$20,857	$22,155	$17,466
8/31/23	$22,926	$25,424	$18,278
8/31/24	$26,421	$32,071	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	15.24%	10.44%	10.20%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.74%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 10,556,129,386

Holdings Count | Holding

112

Advisory Fees Paid, Amount

$ 64,885,976

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$10,556,129,386
Number of Portfolio Holdings	112
Portfolio Turnover Rate	13%
Total Investment Advisory Fees Paid	$64,885,976

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Fair Isaac Corp.	2.2%
Manhattan Associates, Inc.	2.2%
Kirby Corp.	2.1%
Tetra Tech, Inc.	2.0%
SPS Commerce, Inc.	2.0%
RBC Bearings, Inc.	1.9%
CSW Industrials, Inc.	1.9%
Eagle Materials, Inc.	1.9%
Valmont Industries, Inc.	1.7%
Chemed Corp.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000228870

Shareholder Report [Line Items]

Fund Name

Genesis Fund

Class Name

Class E

Trading Symbol

NRGEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$3	0.03%

Expenses Paid, Amount

$ 3

Expense Ratio, Percent

0.03%

Line Graph [Table Text Block]

	Class E $26,435	Russell 3000^® Index $32,071	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000
8/31/15	$10,152	$10,036	$10,003
8/31/16	$11,313	$11,184	$10,862
8/31/17	$12,466	$12,980	$12,483
8/31/18	$15,798	$15,608	$15,659
8/31/19	$15,881	$15,813	$13,640
8/31/20	$18,021	$19,203	$14,461
8/31/21	$23,948	$25,548	$21,270
8/31/22	$20,572	$22,155	$17,466
8/31/23	$22,774	$25,424	$18,278
8/31/24	$26,435	$32,071	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class E	16.08%	10.73%	10.21%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class E's inception date of January 11, 2022 is that of the Fund's Investor Class, which had higher expenses than Class E so its performance typically would have been lower than that of Class E. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class E: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.69%/0.03% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 10,556,129,386

Holdings Count | Holding

112

Advisory Fees Paid, Amount

$ 64,885,976

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$10,556,129,386
Number of Portfolio Holdings	112
Portfolio Turnover Rate	13%
Total Investment Advisory Fees Paid	$64,885,976

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Fair Isaac Corp.	2.2%
Manhattan Associates, Inc.	2.2%
Kirby Corp.	2.1%
Tetra Tech, Inc.	2.0%
SPS Commerce, Inc.	2.0%
RBC Bearings, Inc.	1.9%
CSW Industrials, Inc.	1.9%
Eagle Materials, Inc.	1.9%
Valmont Industries, Inc.	1.7%
Chemed Corp.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000121825

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Investor Class

Trading Symbol

NIQVX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/international-equity-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$123	1.11%

Expenses Paid, Amount

$ 123

Expense Ratio, Percent

1.11%

Line Graph [Table Text Block]

	Investor Class $17,470	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,629	$9,253
8/31/16	$10,072	$9,242
8/31/17	$11,680	$10,872
8/31/18	$12,251	$11,349
8/31/19	$11,732	$10,980
8/31/20	$13,538	$11,653
8/31/21	$17,362	$14,697
8/31/22	$12,600	$11,787
8/31/23	$14,455	$13,899
8/31/24	$17,470	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Investor Class	20.86%	8.29%	5.74%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000121826

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Trust Class

Trading Symbol

NIQTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$129	1.17%

Expenses Paid, Amount

$ 129

Expense Ratio, Percent

1.17%

Line Graph [Table Text Block]

	Trust Class $17,377	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,618	$9,253
8/31/16	$10,060	$9,242
8/31/17	$11,662	$10,872
8/31/18	$12,227	$11,349
8/31/19	$11,695	$10,980
8/31/20	$13,498	$11,653
8/31/21	$17,300	$14,697
8/31/22	$12,544	$11,787
8/31/23	$14,383	$13,899
8/31/24	$17,377	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Trust Class	20.81%	8.24%	5.68%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021340

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Institutional Class

Trading Symbol

NBIIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$98	0.89%

Expenses Paid, Amount

$ 98

Expense Ratio, Percent

0.89%

Line Graph [Table Text Block]

	Institutional Class $1,780,900	MSCI EAFE^® Index (Net) $1,659,600
8/31/14	$1,000,000	$1,000,000
8/31/15	$964,900	$925,300
8/31/16	$1,011,100	$924,200
8/31/17	$1,171,000	$1,087,200
8/31/18	$1,231,000	$1,134,900
8/31/19	$1,182,300	$1,098,000
8/31/20	$1,368,400	$1,165,300
8/31/21	$1,757,700	$1,469,700
8/31/22	$1,277,900	$1,178,700
8/31/23	$1,470,800	$1,389,900
8/31/24	$1,780,900	$1,659,600

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Institutional Class	21.08%	8.54%	5.94%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000121822

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Class A

Trading Symbol

NIQAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$139	1.26%

Expenses Paid, Amount

$ 139

Expense Ratio, Percent

1.26%

Line Graph [Table Text Block]

	Class A (including sales charge) $16,191	MSCI EAFE^® Index (Net) $16,596
8/31/14	$9,425	$10,000
8/31/15	$9,059	$9,253
8/31/16	$9,464	$9,242
8/31/17	$10,914	$10,872
8/31/18	$11,435	$11,349
8/31/19	$10,944	$10,980
8/31/20	$12,616	$11,653
8/31/21	$16,154	$14,697
8/31/22	$11,707	$11,787
8/31/23	$13,411	$13,899
8/31/24	$16,191	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class A (at NAV)	20.73%	8.15%	5.56%
Class A (including sales charge)	13.81%	6.87%	4.94%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000121823

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Class C

Trading Symbol

NIQCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$221	2.01%

Expenses Paid, Amount

$ 221

Expense Ratio, Percent

2.01%

Line Graph [Table Text Block]

	Class C (including sales charge) $15,932	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,539	$9,253
8/31/16	$9,892	$9,242
8/31/17	$11,324	$10,872
8/31/18	$11,782	$11,349
8/31/19	$11,188	$10,980
8/31/20	$12,800	$11,653
8/31/21	$16,265	$14,697
8/31/22	$11,697	$11,787
8/31/23	$13,308	$13,899
8/31/24	$15,932	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class C (at NAV)	19.72%	7.33%	4.77%
Class C (including sales charge)	18.72%	7.33%	4.77%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000130576

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Class R6

Trading Symbol

NRIQX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$87	0.79%

Expenses Paid, Amount

$ 87

Expense Ratio, Percent

0.79%

Line Graph [Table Text Block]

	Class R6 $17,983	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,651	$9,253
8/31/16	$10,135	$9,242
8/31/17	$11,742	$10,872
8/31/18	$12,359	$11,349
8/31/19	$11,871	$10,980
8/31/20	$13,760	$11,653
8/31/21	$17,691	$14,697
8/31/22	$12,882	$11,787
8/31/23	$14,835	$13,899
8/31/24	$17,983	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class R6	21.22%	8.66%	6.04%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000228871

Shareholder Report [Line Items]

Fund Name

International Equity Fund

Class Name

Class E

Trading Symbol

NIQEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$11	0.10%

Expenses Paid, Amount

$ 11

Expense Ratio, Percent

0.10%

Line Graph [Table Text Block]

	Class E $18,191	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,649	$9,253
8/31/16	$10,111	$9,242
8/31/17	$11,710	$10,872
8/31/18	$12,310	$11,349
8/31/19	$11,823	$10,980
8/31/20	$13,684	$11,653
8/31/21	$17,577	$14,697
8/31/22	$12,848	$11,787
8/31/23	$14,900	$13,899
8/31/24	$18,191	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class E	22.09%	9.00%	6.17%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,124,004,319

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,416,618

InvestmentCompanyPortfolioTurnover

64.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,124,004,319
Number of Portfolio Holdings	95
Portfolio Turnover Rate	64%
Total Investment Advisory Fees Paid	$6,416,618

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	24.0%
Financials	19.4%
Information Technology	17.1%
Health Care	16.0%
Consumer Staples	8.8%
Consumer Discretionary	5.5%
Materials	3.2%
Energy	3.1%
Communication Services	2.5%
Short-Term Investments	0.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Experian PLC	1.8%
Oracle Corp. Japan	1.6%
Resona Holdings, Inc.	1.6%
BAE Systems PLC	1.6%

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/international-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

The change in Fund fees for the reporting period resulted primarily from changes in operating expenses.

Material Fund Change Expenses [Text Block]

The change in Fund fees for the reporting period resulted primarily from changes in operating expenses.

Summary of Change Legend [Text Block]

Accountant Change Date

Sep. 01, 2023

C000034262

Shareholder Report [Line Items]

Fund Name

International Select Fund

Class Name

Trust Class

Trading Symbol

NILTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/international-select-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$126	1.15%

Expenses Paid, Amount

$ 126

Expense Ratio, Percent

1.15%

Line Graph [Table Text Block]

	Trust Class $17,318	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,553	$9,253
8/31/16	$9,902	$9,242
8/31/17	$11,444	$10,872
8/31/18	$12,036	$11,349
8/31/19	$11,606	$10,980
8/31/20	$13,494	$11,653
8/31/21	$17,289	$14,697
8/31/22	$12,634	$11,787
8/31/23	$14,454	$13,899
8/31/24	$17,318	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Trust Class	19.82%	8.33%	5.65%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 172,603,821

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 604,184

InvestmentCompanyPortfolioTurnover

69.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$172,603,821
Number of Portfolio Holdings	82
Portfolio Turnover Rate	69%
Total Investment Advisory Fees Paid	$604,184

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	21.2%
Financials	19.9%
Health Care	16.5%
Information Technology	16.0%
Consumer Staples	9.8%
Consumer Discretionary	6.9%
Materials	3.6%
Energy	3.5%
Communication Services	2.6%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Experian PLC	2.1%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Symrise AG	1.8%
BAE Systems PLC	1.7%
SAP SE	1.7%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000035184

Shareholder Report [Line Items]

Fund Name

International Select Fund

Class Name

Institutional Class

Trading Symbol

NILIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$88	0.80%

Expenses Paid, Amount

$ 88

Expense Ratio, Percent

0.80%

Line Graph [Table Text Block]

	Institutional Class $1,792,700	MSCI EAFE^® Index (Net) $1,659,600
8/31/14	$1,000,000	$1,000,000
8/31/15	$958,200	$925,300
8/31/16	$996,000	$924,200
8/31/17	$1,156,700	$1,087,200
8/31/18	$1,220,600	$1,134,900
8/31/19	$1,180,400	$1,098,000
8/31/20	$1,377,300	$1,165,300
8/31/21	$1,770,800	$1,469,700
8/31/22	$1,299,600	$1,178,700
8/31/23	$1,490,400	$1,389,900
8/31/24	$1,792,700	$1,659,600

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Institutional Class	20.29%	8.72%	6.01%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 172,603,821

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 604,184

InvestmentCompanyPortfolioTurnover

69.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$172,603,821
Number of Portfolio Holdings	82
Portfolio Turnover Rate	69%
Total Investment Advisory Fees Paid	$604,184

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	21.2%
Financials	19.9%
Health Care	16.5%
Information Technology	16.0%
Consumer Staples	9.8%
Consumer Discretionary	6.9%
Materials	3.6%
Energy	3.5%
Communication Services	2.6%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Experian PLC	2.1%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Symrise AG	1.8%
BAE Systems PLC	1.7%
SAP SE	1.7%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000057306

Shareholder Report [Line Items]

Fund Name

International Select Fund

Class Name

Class A

Trading Symbol

NBNAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$128	1.16%

Expenses Paid, Amount

$ 128

Expense Ratio, Percent

1.16%

Line Graph [Table Text Block]

	Class A (including sales charge) $16,292	MSCI EAFE^® Index (Net) $16,596
8/31/14	$9,425	$10,000
8/31/15	$8,990	$9,253
8/31/16	$9,322	$9,242
8/31/17	$10,776	$10,872
8/31/18	$11,328	$11,349
8/31/19	$10,923	$10,980
8/31/20	$12,694	$11,653
8/31/21	$16,258	$14,697
8/31/22	$11,886	$11,787
8/31/23	$13,591	$13,899
8/31/24	$16,292	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class A (at NAV)	19.88%	8.33%	5.63%
Class A (including sales charge)	13.01%	7.06%	5.00%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 172,603,821

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 604,184

InvestmentCompanyPortfolioTurnover

69.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$172,603,821
Number of Portfolio Holdings	82
Portfolio Turnover Rate	69%
Total Investment Advisory Fees Paid	$604,184

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	21.2%
Financials	19.9%
Health Care	16.5%
Information Technology	16.0%
Consumer Staples	9.8%
Consumer Discretionary	6.9%
Materials	3.6%
Energy	3.5%
Communication Services	2.6%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Experian PLC	2.1%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Symrise AG	1.8%
BAE Systems PLC	1.7%
SAP SE	1.7%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000057307

Shareholder Report [Line Items]

Fund Name

International Select Fund

Class Name

Class C

Trading Symbol

NBNCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$209	1.91%

Expenses Paid, Amount

$ 209

Expense Ratio, Percent

1.91%

Line Graph [Table Text Block]

	Class C (including sales charge) $16,040	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,477	$9,253
8/31/16	$9,751	$9,242
8/31/17	$11,184	$10,872
8/31/18	$11,673	$11,349
8/31/19	$11,168	$10,980
8/31/20	$12,885	$11,653
8/31/21	$16,377	$14,697
8/31/22	$11,882	$11,787
8/31/23	$13,485	$13,899
8/31/24	$16,040	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class C (at NAV)	18.95%	7.51%	4.84%
Class C (including sales charge)	17.95%	7.51%	4.84%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 172,603,821

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 604,184

InvestmentCompanyPortfolioTurnover

69.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$172,603,821
Number of Portfolio Holdings	82
Portfolio Turnover Rate	69%
Total Investment Advisory Fees Paid	$604,184

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	21.2%
Financials	19.9%
Health Care	16.5%
Information Technology	16.0%
Consumer Staples	9.8%
Consumer Discretionary	6.9%
Materials	3.6%
Energy	3.5%
Communication Services	2.6%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Experian PLC	2.1%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Symrise AG	1.8%
BAE Systems PLC	1.7%
SAP SE	1.7%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077166

Shareholder Report [Line Items]

Fund Name

International Select Fund

Class Name

Class R3

Trading Symbol

NBNRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$155	1.41%

Expenses Paid, Amount

$ 155

Expense Ratio, Percent

1.41%

Line Graph [Table Text Block]

	Class R3 $16,871	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,529	$9,253
8/31/16	$9,846	$9,242
8/31/17	$11,349	$10,872
8/31/18	$11,908	$11,349
8/31/19	$11,454	$10,980
8/31/20	$13,279	$11,653
8/31/21	$16,962	$14,697
8/31/22	$12,372	$11,787
8/31/23	$14,110	$13,899
8/31/24	$16,871	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class R3	19.57%	8.05%	5.37%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 172,603,821

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 604,184

InvestmentCompanyPortfolioTurnover

69.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$172,603,821
Number of Portfolio Holdings	82
Portfolio Turnover Rate	69%
Total Investment Advisory Fees Paid	$604,184

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	21.2%
Financials	19.9%
Health Care	16.5%
Information Technology	16.0%
Consumer Staples	9.8%
Consumer Discretionary	6.9%
Materials	3.6%
Energy	3.5%
Communication Services	2.6%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Experian PLC	2.1%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Symrise AG	1.8%
BAE Systems PLC	1.7%
SAP SE	1.7%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000160231

Shareholder Report [Line Items]

Fund Name

International Select Fund

Class Name

Class R6

Trading Symbol

NRILX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$77	0.70%

Expenses Paid, Amount

$ 77

Expense Ratio, Percent

0.70%

Line Graph [Table Text Block]

	Class R6 $17,895	MSCI EAFE^® Index (Net) $16,596
8/31/14	$10,000	$10,000
8/31/15	$9,553	$9,253
8/31/16	$9,902	$9,242
8/31/17	$11,466	$10,872
8/31/18	$12,106	$11,349
8/31/19	$11,730	$10,980
8/31/20	$13,697	$11,653
8/31/21	$17,622	$14,697
8/31/22	$12,936	$11,787
8/31/23	$14,864	$13,899
8/31/24	$17,895	$16,596

Average Annual Return [Table Text Block]

	1 Year	5 Years	10 Years
Class R6	20.39%	8.81%	5.99%
MSCI EAFE^® Index (Net)	19.40%	8.61%	5.20%

AssetsNet

$ 172,603,821

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 604,184

InvestmentCompanyPortfolioTurnover

69.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$172,603,821
Number of Portfolio Holdings	82
Portfolio Turnover Rate	69%
Total Investment Advisory Fees Paid	$604,184

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	21.2%
Financials	19.9%
Health Care	16.5%
Information Technology	16.0%
Consumer Staples	9.8%
Consumer Discretionary	6.9%
Materials	3.6%
Energy	3.5%
Communication Services	2.6%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

ASML Holding NV	3.0%
Novo Nordisk AS Class B	2.6%
AstraZeneca PLC	2.4%
Experian PLC	2.1%
Hitachi Ltd.	2.1%
Unilever PLC	1.9%
London Stock Exchange Group PLC	1.9%
Symrise AG	1.8%
BAE Systems PLC	1.7%
SAP SE	1.7%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000175514

Shareholder Report [Line Items]

Fund Name

International Small Cap Fund

Class Name

Institutional Class

Trading Symbol

NIOIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/international-small-cap-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$116	1.05%

Expenses Paid, Amount

$ 116

Expense Ratio, Percent

1.05%

Line Graph [Table Text Block]

	Institutional Class $1,889,300	MSCI EAFE^® Index (Net) $1,800,000	MSCI EAFE^® Small Cap Index (Net) $1,648,200
12/8/16	$1,000,000	$1,000,000	$1,000,000
8/31/17	$1,274,000	$1,179,200	$1,235,300
8/31/18	$1,389,500	$1,231,000	$1,327,500
8/31/19	$1,232,900	$1,190,900	$1,205,800
8/31/20	$1,526,800	$1,263,900	$1,334,300
8/31/21	$2,091,300	$1,594,100	$1,772,100
8/31/22	$1,447,500	$1,278,400	$1,311,800
8/31/23	$1,572,400	$1,507,500	$1,432,200
8/31/24	$1,889,300	$1,800,000	$1,648,200

Average Annual Return [Table Text Block]

	1 Year	5 Years	Since Inception 12/8/16
Institutional Class	20.16%	8.91%	8.57%
MSCI EAFE^® Index (Net)	19.40%	8.61%	7.89%
MSCI EAFE^® Small Cap Index (Net)	15.08%	6.45%	6.67%

Performance Inception Date

Dec. 08, 2016

AssetsNet

$ 4,210,965

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

43.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$4,210,965
Number of Portfolio Holdings	63
Portfolio Turnover Rate	43%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	29.7%
Information Technology	20.4%
Health Care	11.2%
Materials	9.4%
Consumer Discretionary	8.3%
Financials	6.7%
Real Estate	4.5%
Consumer Staples	3.0%
Energy	1.4%
Short-Term Investments	5.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional Treasury Money Market Fund Premier Class	4.1%
Accelleron Industries AG	2.5%
Nichias Corp.	2.3%
Diploma PLC	2.2%
NS Solutions Corp.	2.0%
YAMABIKO Corp.	2.0%
Sweco AB Class B	1.9%
Fugro NV	1.9%
VZ Holding AG	1.9%
Daiei Kankyo Co. Ltd.	1.9%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000175512

Shareholder Report [Line Items]

Fund Name

International Small Cap Fund

Class Name

Class A

Trading Symbol

NIOAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$155	1.41%

Expenses Paid, Amount

$ 155

Expense Ratio, Percent

1.41%

Line Graph [Table Text Block]

	Class A (including sales charge) $17,329	MSCI EAFE^® Index (Net) $18,000	MSCI EAFE^® Small Cap Index (Net) $16,482
12/8/16	$9,425	$10,000	$10,000
12/8/16	$9,425	$10,000	$10,000
8/31/17	$11,970	$11,792	$12,353
8/31/18	$12,999	$12,310	$13,275
8/31/19	$11,505	$11,909	$12,058
8/31/20	$14,198	$12,639	$13,343
8/31/21	$19,372	$15,941	$17,721
8/31/22	$13,357	$12,784	$13,118
8/31/23	$14,472	$15,075	$14,322
8/31/24	$17,329	$18,000	$16,482

Average Annual Return [Table Text Block]

	1 Year	5 Years	Since Inception 12/8/16
Class A (at NAV)	19.74%	8.54%	8.19%
Class A (including sales charge)	12.89%	7.25%	7.36%
MSCI EAFE^® Index (Net)	19.40%	8.61%	7.89%
MSCI EAFE^® Small Cap Index (Net)	15.08%	6.45%	6.67%

Performance Inception Date

Dec. 08, 2016

AssetsNet

$ 4,210,965

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

43.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$4,210,965
Number of Portfolio Holdings	63
Portfolio Turnover Rate	43%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	29.7%
Information Technology	20.4%
Health Care	11.2%
Materials	9.4%
Consumer Discretionary	8.3%
Financials	6.7%
Real Estate	4.5%
Consumer Staples	3.0%
Energy	1.4%
Short-Term Investments	5.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional Treasury Money Market Fund Premier Class	4.1%
Accelleron Industries AG	2.5%
Nichias Corp.	2.3%
Diploma PLC	2.2%
NS Solutions Corp.	2.0%
YAMABIKO Corp.	2.0%
Sweco AB Class B	1.9%
Fugro NV	1.9%
VZ Holding AG	1.9%
Daiei Kankyo Co. Ltd.	1.9%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000175513

Shareholder Report [Line Items]

Fund Name

International Small Cap Fund

Class Name

Class C

Trading Symbol

NIOCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$237	2.17%

Expenses Paid, Amount

$ 237

Expense Ratio, Percent

2.17%

Line Graph [Table Text Block]

	Class C (including sales charge) $17,351	MSCI EAFE^® Index (Net) $18,000	MSCI EAFE^® Small Cap Index (Net) $16,482
12/8/16	$10,000	$10,000	$10,000
12/8/16	$10,000	$10,000	$10,000
8/31/17	$12,630	$11,792	$12,353
8/31/18	$13,627	$12,310	$13,275
8/31/19	$11,962	$11,909	$12,058
8/31/20	$14,655	$12,639	$13,343
8/31/21	$19,855	$15,941	$17,721
8/31/22	$13,582	$12,784	$13,118
8/31/23	$14,594	$15,075	$14,322
8/31/24	$17,351	$18,000	$16,482

Average Annual Return [Table Text Block]

	1 Year	5 Years	Since Inception 12/8/16
Class C (at NAV)	18.89%	7.72%	7.38%
Class C (including sales charge)	17.89%	7.72%	7.38%
MSCI EAFE^® Index (Net)	19.40%	8.61%	7.89%
MSCI EAFE^® Small Cap Index (Net)	15.08%	6.45%	6.67%

Performance Inception Date

Dec. 08, 2016

AssetsNet

$ 4,210,965

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

43.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$4,210,965
Number of Portfolio Holdings	63
Portfolio Turnover Rate	43%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	29.7%
Information Technology	20.4%
Health Care	11.2%
Materials	9.4%
Consumer Discretionary	8.3%
Financials	6.7%
Real Estate	4.5%
Consumer Staples	3.0%
Energy	1.4%
Short-Term Investments	5.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional Treasury Money Market Fund Premier Class	4.1%
Accelleron Industries AG	2.5%
Nichias Corp.	2.3%
Diploma PLC	2.2%
NS Solutions Corp.	2.0%
YAMABIKO Corp.	2.0%
Sweco AB Class B	1.9%
Fugro NV	1.9%
VZ Holding AG	1.9%
Daiei Kankyo Co. Ltd.	1.9%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000175515

Shareholder Report [Line Items]

Fund Name

International Small Cap Fund

Class Name

Class R6

Trading Symbol

NIORX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$105	0.95%

Expenses Paid, Amount

$ 105

Expense Ratio, Percent

0.95%

Line Graph [Table Text Block]

	Class R6 $19,034	MSCI EAFE^® Index (Net) $18,000	MSCI EAFE^® Small Cap Index (Net) $16,482
12/8/16	$10,000	$10,000	$10,000
8/31/17	$12,740	$11,792	$12,353
8/31/18	$13,902	$12,310	$13,275
8/31/19	$12,354	$11,909	$12,058
8/31/20	$15,320	$12,639	$13,343
8/31/21	$21,010	$15,941	$17,721
8/31/22	$14,547	$12,784	$13,118
8/31/23	$15,817	$15,075	$14,322
8/31/24	$19,034	$18,000	$16,482

Average Annual Return [Table Text Block]

	1 Year	5 Years	Since Inception 12/8/16
Class R6	20.34%	9.03%	8.68%
MSCI EAFE^® Index (Net)	19.40%	8.61%	7.89%
MSCI EAFE^® Small Cap Index (Net)	15.08%	6.45%	6.67%

Performance Inception Date

Dec. 08, 2016

AssetsNet

$ 4,210,965

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

43.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$4,210,965
Number of Portfolio Holdings	63
Portfolio Turnover Rate	43%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Sector Allocation

(as a % of Total Investments^{Footnote Reference*})

Industrials	29.7%
Information Technology	20.4%
Health Care	11.2%
Materials	9.4%
Consumer Discretionary	8.3%
Financials	6.7%
Real Estate	4.5%
Consumer Staples	3.0%
Energy	1.4%
Short-Term Investments	5.4%
Total	100.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Largest Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional Treasury Money Market Fund Premier Class	4.1%
Accelleron Industries AG	2.5%
Nichias Corp.	2.3%
Diploma PLC	2.2%
NS Solutions Corp.	2.0%
YAMABIKO Corp.	2.0%
Sweco AB Class B	1.9%
Fugro NV	1.9%
VZ Holding AG	1.9%
Daiei Kankyo Co. Ltd.	1.9%

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000087774

Shareholder Report [Line Items]

Fund Name

Intrinsic Value Fund

Class Name

Institutional Class

Trading Symbol

NINLX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/intrinsic-value-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$99	0.95%

Expenses Paid, Amount

$ 99

Expense Ratio, Percent

0.95%

Line Graph [Table Text Block]

	Institutional Class $2,231,100	Russell 3000^® Index $3,207,100	Russell 2000^® Value Index $2,054,200	Russell 2000^® Index $2,165,500
8/31/14	$1,000,000	$1,000,000	$1,000,000	$1,000,000
8/31/15	$1,013,600	$1,003,600	$950,500	$1,000,300
8/31/16	$1,043,700	$1,118,400	$1,081,700	$1,086,200
8/31/17	$1,216,900	$1,298,000	$1,227,300	$1,248,300
8/31/18	$1,472,600	$1,560,800	$1,473,300	$1,565,900
8/31/19	$1,313,100	$1,581,300	$1,253,900	$1,364,000
8/31/20	$1,409,700	$1,920,300	$1,176,900	$1,446,100
8/31/21	$2,275,700	$2,554,800	$1,877,100	$2,127,000
8/31/22	$1,921,100	$2,215,500	$1,686,000	$1,746,600
8/31/23	$2,038,600	$2,542,400	$1,722,600	$1,827,800
8/31/24	$2,231,100	$3,207,100	$2,054,200	$2,165,500

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	9.44%	11.18%	8.36%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Value Index	19.25%	10.38%	7.46%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, total annual operating expense ratio for fiscal year 2023 was 0.95%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Value Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,280,520,287

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,289,858

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,280,520,287
Number of Portfolio Holdings	97
Portfolio Turnover Rate	21%
Total Investment Advisory Fees Paid	$10,289,858

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Criteo SA	3.9%
KBR, Inc.	3.2%
Vistra Corp.	3.1%
Veeco Instruments, Inc.	2.9%
Ciena Corp.	2.8%
Kyndryl Holdings, Inc.	2.7%
International Game Technology PLC	2.6%
AerCap Holdings NV	2.6%
Ormat Technologies, Inc.	2.6%
Avery Dennison Corp.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000087772

Shareholder Report [Line Items]

Fund Name

Intrinsic Value Fund

Class Name

Class A

Trading Symbol

NINAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$137	1.31%

Expenses Paid, Amount

$ 137

Expense Ratio, Percent

1.31%

Line Graph [Table Text Block]

	Class A (including sales charge) $20,265	Russell 3000^® Index $32,071	Russell 2000^® Value Index $20,542	Russell 2000^® Index $21,655
8/31/14	$9,425	$10,000	$10,000	$10,000
8/31/15	$9,516	$10,036	$9,505	$10,003
8/31/16	$9,761	$11,184	$10,817	$10,862
8/31/17	$11,342	$12,980	$12,273	$12,483
8/31/18	$13,677	$15,608	$14,733	$15,659
8/31/19	$12,148	$15,813	$12,539	$13,640
8/31/20	$13,002	$19,203	$11,769	$14,461
8/31/21	$20,909	$25,548	$18,771	$21,270
8/31/22	$17,584	$22,155	$16,860	$17,466
8/31/23	$18,580	$25,424	$17,226	$18,278
8/31/24	$20,265	$32,071	$20,542	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	9.06%	10.78%	7.96%
Class A (including sales charge)	2.80%	9.47%	7.32%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Value Index	19.25%	10.38%	7.46%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, total annual operating expense ratio for fiscal year 2023 was 1.35%. Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Value Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,280,520,287

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,289,858

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,280,520,287
Number of Portfolio Holdings	97
Portfolio Turnover Rate	21%
Total Investment Advisory Fees Paid	$10,289,858

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Criteo SA	3.9%
KBR, Inc.	3.2%
Vistra Corp.	3.1%
Veeco Instruments, Inc.	2.9%
Ciena Corp.	2.8%
Kyndryl Holdings, Inc.	2.7%
International Game Technology PLC	2.6%
AerCap Holdings NV	2.6%
Ormat Technologies, Inc.	2.6%
Avery Dennison Corp.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000087773

Shareholder Report [Line Items]

Fund Name

Intrinsic Value Fund

Class Name

Class C

Trading Symbol

NINCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$216	2.07%

Expenses Paid, Amount

$ 216

Expense Ratio, Percent

2.07%

Line Graph [Table Text Block]

	Class C (including sales charge) $19,950	Russell 3000^® Index $32,071	Russell 2000^® Value Index $20,542	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,019	$10,036	$9,505	$10,003
8/31/16	$10,204	$11,184	$10,817	$10,862
8/31/17	$11,771	$12,980	$12,273	$12,483
8/31/18	$14,084	$15,608	$14,733	$15,659
8/31/19	$12,425	$15,813	$12,539	$13,640
8/31/20	$13,191	$19,203	$11,769	$14,461
8/31/21	$21,049	$25,548	$18,771	$21,270
8/31/22	$17,571	$22,155	$16,860	$17,466
8/31/23	$18,431	$25,424	$17,226	$18,278
8/31/24	$19,950	$32,071	$20,542	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	8.24%	9.93%	7.15%
Class C (including sales charge)	7.24%	9.93%	7.15%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Value Index	19.25%	10.38%	7.46%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including acomparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 2.10%. Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Value Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,280,520,287

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,289,858

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,280,520,287
Number of Portfolio Holdings	97
Portfolio Turnover Rate	21%
Total Investment Advisory Fees Paid	$10,289,858

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Criteo SA	3.9%
KBR, Inc.	3.2%
Vistra Corp.	3.1%
Veeco Instruments, Inc.	2.9%
Ciena Corp.	2.8%
Kyndryl Holdings, Inc.	2.7%
International Game Technology PLC	2.6%
AerCap Holdings NV	2.6%
Ormat Technologies, Inc.	2.6%
Avery Dennison Corp.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000150163

Shareholder Report [Line Items]

Fund Name

Intrinsic Value Fund

Class Name

Class R6

Trading Symbol

NRINX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$90	0.86%

Expenses Paid, Amount

$ 90

Expense Ratio, Percent

0.86%

Line Graph [Table Text Block]

	Class R6 $22,456	Russell 3000^® Index $32,071	Russell 2000^® Value Index $20,542	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,136	$10,036	$9,505	$10,003
8/31/16	$10,437	$11,184	$10,817	$10,862
8/31/17	$12,169	$12,980	$12,273	$12,483
8/31/18	$14,726	$15,608	$14,733	$15,659
8/31/19	$13,149	$15,813	$12,539	$13,640
8/31/20	$14,133	$19,203	$11,769	$14,461
8/31/21	$22,831	$25,548	$18,771	$21,270
8/31/22	$19,295	$22,155	$16,860	$17,466
8/31/23	$20,500	$25,424	$17,226	$18,278
8/31/24	$22,456	$32,071	$20,542	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	9.54%	11.30%	8.43%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Value Index	19.25%	10.38%	7.46%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including acomparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class R6's inception date of January 18, 2019 is that of the Fund's Institutional Class, which had higher expenses than Class R6 so its performance typically would have been lower than that of Class R6. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, total annual operating expense ratio for fiscal year 2023 was 0.85%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Value Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,280,520,287

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,289,858

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,280,520,287
Number of Portfolio Holdings	97
Portfolio Turnover Rate	21%
Total Investment Advisory Fees Paid	$10,289,858

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Criteo SA	3.9%
KBR, Inc.	3.2%
Vistra Corp.	3.1%
Veeco Instruments, Inc.	2.9%
Ciena Corp.	2.8%
Kyndryl Holdings, Inc.	2.7%
International Game Technology PLC	2.6%
AerCap Holdings NV	2.6%
Ormat Technologies, Inc.	2.6%
Avery Dennison Corp.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021354

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Investor Class

Trading Symbol

NGUAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/large-cap-growth-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$91	0.81%

Expenses Paid, Amount

$ 91

Expense Ratio, Percent

0.81%

Line Graph [Table Text Block]

	Investor Class $35,193	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,697	$10,048	$10,426
8/31/16	$10,516	$11,309	$11,525
8/31/17	$12,367	$13,145	$13,924
8/31/18	$15,070	$15,730	$17,715
8/31/19	$15,678	$16,189	$18,472
8/31/20	$21,284	$19,740	$26,662
8/31/21	$28,839	$25,893	$34,268
8/31/22	$23,890	$22,986	$27,737
8/31/23	$28,199	$26,650	$33,822
8/31/24	$35,193	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	24.80%	17.55%	13.41%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Investor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.83%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021355

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Trust Class

Trading Symbol

NBGTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$113	1.01%

Expenses Paid, Amount

$ 113

Expense Ratio, Percent

1.01%

Line Graph [Table Text Block]

	Trust Class $34,565	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,678	$10,048	$10,426
8/31/16	$10,482	$11,309	$11,525
8/31/17	$12,303	$13,145	$13,924
8/31/18	$14,979	$15,730	$17,715
8/31/19	$15,544	$16,189	$18,472
8/31/20	$21,069	$19,740	$26,662
8/31/21	$28,488	$25,893	$34,268
8/31/22	$23,558	$22,986	$27,737
8/31/23	$27,755	$26,650	$33,822
8/31/24	$34,565	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	24.54%	17.33%	13.20%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.03%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021356

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Advisor Class

Trading Symbol

NBGUX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$161	1.44%

Expenses Paid, Amount

$ 161

Expense Ratio, Percent

1.44%

Line Graph [Table Text Block]

	Advisor Class $33,538	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,634	$10,048	$10,426
8/31/16	$10,408	$11,309	$11,525
8/31/17	$12,204	$13,145	$13,924
8/31/18	$14,808	$15,730	$17,715
8/31/19	$15,313	$16,189	$18,472
8/31/20	$20,700	$19,740	$26,662
8/31/21	$27,934	$25,893	$34,268
8/31/22	$23,059	$22,986	$27,737
8/31/23	$27,049	$26,650	$33,822
8/31/24	$33,538	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Advisor Class	23.99%	16.98%	12.86%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Advisor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.34%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000027740

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Institutional Class

Trading Symbol

NGDLX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$74	0.66%

Expenses Paid, Amount

$ 74

Expense Ratio, Percent

0.66%

Line Graph [Table Text Block]

	Institutional Class $3,579,500	S&P 500^® Index $3,388,200	Russell 1000^® Growth Index $4,422,300
8/31/14	$1,000,000	$1,000,000	$1,000,000
8/31/15	$971,600	$1,004,800	$1,042,600
8/31/16	$1,055,900	$1,130,900	$1,152,500
8/31/17	$1,243,100	$1,314,500	$1,392,400
8/31/18	$1,518,400	$1,573,000	$1,771,500
8/31/19	$1,582,000	$1,618,900	$1,847,200
8/31/20	$2,151,900	$1,974,000	$2,666,200
8/31/21	$2,919,700	$2,589,300	$3,426,800
8/31/22	$2,421,700	$2,298,600	$2,773,700
8/31/23	$2,863,500	$2,665,000	$3,382,200
8/31/24	$3,579,500	$3,388,200	$4,422,300

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	25.00%	17.74%	13.60%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.68%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077157

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Class A

Trading Symbol

NGDAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$115	1.02%

Expenses Paid, Amount

$ 115

Expense Ratio, Percent

1.02%

Line Graph [Table Text Block]

	Class A (including sales charge) $32,489	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$9,425	$10,000	$10,000
2/28/15	$9,425	$10,000	$10,000
8/31/15	$9,121	$10,048	$10,426
8/31/16	$9,880	$11,309	$11,525
8/31/17	$11,587	$13,145	$13,924
8/31/18	$14,098	$15,730	$17,715
8/31/19	$14,633	$16,189	$18,472
8/31/20	$19,826	$19,740	$26,662
8/31/21	$26,795	$25,893	$34,268
8/31/22	$22,151	$22,986	$27,737
8/31/23	$26,093	$26,650	$33,822
8/31/24	$32,489	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	24.51%	17.30%	13.17%
Class A (including sales charge)	17.34%	15.91%	12.51%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.05%. Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077158

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Class C

Trading Symbol

NGDCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$198	1.77%

Expenses Paid, Amount

$ 198

Expense Ratio, Percent

1.77%

Line Graph [Table Text Block]

	Class C (including sales charge) $32,002	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,599	$10,048	$10,426
8/31/16	$10,317	$11,309	$11,525
8/31/17	$12,022	$13,145	$13,924
8/31/18	$14,516	$15,730	$17,715
8/31/19	$14,952	$16,189	$18,472
8/31/20	$20,114	$19,740	$26,662
8/31/21	$26,987	$25,893	$34,268
8/31/22	$22,137	$22,986	$27,737
8/31/23	$25,887	$26,650	$33,822
8/31/24	$32,002	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	23.62%	16.44%	12.34%
Class C (including sales charge)	22.62%	16.44%	12.34%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.79%. Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC). The CDSC is 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077160

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Class R3

Trading Symbol

NGDRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$143	1.28%

Expenses Paid, Amount

$ 143

Expense Ratio, Percent

1.28%

Line Graph [Table Text Block]

	Class R3 $33,500	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,647	$10,048	$10,426
8/31/16	$10,418	$11,309	$11,525
8/31/17	$12,191	$13,145	$13,924
8/31/18	$14,792	$15,730	$17,715
8/31/19	$15,311	$16,189	$18,472
8/31/20	$20,679	$19,740	$26,662
8/31/21	$27,868	$25,893	$34,268
8/31/22	$22,963	$22,986	$27,737
8/31/23	$26,976	$26,650	$33,822
8/31/24	$33,500	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	24.18%	16.95%	12.85%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.36%, which includes the class's repayment of expenses previously reimbursed and/or waived under its contractual expense limitation. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000210977

Shareholder Report [Line Items]

Fund Name

Large Cap Growth Fund

Class Name

Class R6

Trading Symbol

NGRDX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$65	0.58%

Expenses Paid, Amount

$ 65

Expense Ratio, Percent

0.58%

Line Graph [Table Text Block]

	Class R6 $35,587	S&P 500^® Index $33,882	Russell 1000^® Growth Index $44,223
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,697	$10,048	$10,426
8/31/16	$10,516	$11,309	$11,525
8/31/17	$12,367	$13,145	$13,924
8/31/18	$15,070	$15,730	$17,715
8/31/19	$15,686	$16,189	$18,472
8/31/20	$21,347	$19,740	$26,662
8/31/21	$28,971	$25,893	$34,268
8/31/22	$24,042	$22,986	$27,737
8/31/23	$28,449	$26,650	$33,822
8/31/24	$35,587	$33,882	$44,223

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	25.09%	17.80%	13.53%
S&P 500^® Index	27.14%	15.92%	12.98%
Russell 1000^® Growth Index	30.75%	19.08%	16.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class R6's inception date of March 29, 2019 is that of the Fund's Investor Class, which had higher expenses than Class R6 so its performance typically would have been lower than that of Class R6. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.59%/0.58% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Growth Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

Material Change Date

Sep. 01, 2023

AssetsNet

$ 2,510,860,740

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 10,811,453

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$2,510,860,740
Number of Portfolio Holdings	65
Portfolio Turnover Rate	30%
Total Investment Advisory Fees Paid	$10,811,453

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	11.1%
Amazon.com, Inc.	7.1%
NVIDIA Corp.	6.8%
Apple, Inc.	5.6%
Meta Platforms, Inc. Class A	5.4%
Fanatics Holdings, Inc. Class A	4.0%
Alphabet, Inc. Class A	3.8%
Broadcom, Inc.	3.4%
Salesforce, Inc.	2.4%
Netflix, Inc.	2.4%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/large-cap-growth-fund?section=documents or upon request at 800.366.6264 or issdl@nb.com.

The fees associated with this Fund changed during the reporting period. The variations in fees are primarily the result of a reduction in the class's contractual expense cap.

Material Fund Change Expenses [Text Block]

The fees associated with this Fund changed during the reporting period. The variations in fees are primarily the result of a reduction in the class's contractual expense cap.

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/large-cap-growth-fund?section=documents or upon request at 800.366.6264 or issdl@nb.com.

Accountant Change Date

Sep. 01, 2023

C000021333

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Investor Class

Trading Symbol

NPRTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/large-cap-value-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$80	0.75%

Expenses Paid, Amount

$ 80

Expense Ratio, Percent

0.75%

Line Graph [Table Text Block]

	Investor Class $26,117	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,281	$10,040	$9,652
8/31/16	$10,502	$11,214	$10,899
8/31/17	$12,171	$13,025	$12,161
8/31/18	$13,740	$15,607	$13,677
8/31/19	$14,599	$15,996	$13,762
8/31/20	$15,071	$19,595	$13,877
8/31/21	$22,614	$25,914	$18,935
8/31/22	$21,624	$22,555	$17,756
8/31/23	$22,827	$26,029	$19,282
8/31/24	$26,117	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	14.41%	12.34%	10.08%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Investor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.76%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021334

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Trust Class

Trading Symbol

NBPTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$102	0.95%

Expenses Paid, Amount

$ 102

Expense Ratio, Percent

0.95%

Line Graph [Table Text Block]

	Trust Class $25,637	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,260	$10,040	$9,652
8/31/16	$10,461	$11,214	$10,899
8/31/17	$12,111	$13,025	$12,161
8/31/18	$13,647	$15,607	$13,677
8/31/19	$14,470	$15,996	$13,762
8/31/20	$14,912	$19,595	$13,877
8/31/21	$22,331	$25,914	$18,935
8/31/22	$21,312	$22,555	$17,756
8/31/23	$22,452	$26,029	$19,282
8/31/24	$25,637	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	14.18%	12.12%	9.87%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.95%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021335

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Advisor Class

Trading Symbol

NBPBX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$118	1.10%

Expenses Paid, Amount

$ 118

Expense Ratio, Percent

1.10%

Line Graph [Table Text Block]

	Advisor Class $25,249	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,245	$10,040	$9,652
8/31/16	$10,430	$11,214	$10,899
8/31/17	$12,048	$13,025	$12,161
8/31/18	$13,561	$15,607	$13,677
8/31/19	$14,361	$15,996	$13,762
8/31/20	$14,777	$19,595	$13,877
8/31/21	$22,089	$25,914	$18,935
8/31/22	$21,050	$22,555	$17,756
8/31/23	$22,143	$26,029	$19,282
8/31/24	$25,249	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Advisor Class	14.03%	11.95%	9.70%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Advisor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.10%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000027735

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Institutional Class

Trading Symbol

NBPIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$64	0.60%

Expenses Paid, Amount

$ 64

Expense Ratio, Percent

0.60%

Line Graph [Table Text Block]

	Institutional Class $2,655,000	Russell 1000^® Index $3,295,200	Russell 1000^® Value Index $2,336,000
8/31/14	$1,000,000	$1,000,000	$1,000,000
8/31/15	$929,700	$1,004,000	$965,200
8/31/16	$1,054,200	$1,121,400	$1,089,900
8/31/17	$1,223,300	$1,302,500	$1,216,100
8/31/18	$1,383,600	$1,560,700	$1,367,700
8/31/19	$1,472,300	$1,599,600	$1,376,200
8/31/20	$1,522,700	$1,959,500	$1,387,700
8/31/21	$2,287,900	$2,591,400	$1,893,500
8/31/22	$2,191,500	$2,255,500	$1,775,600
8/31/23	$2,316,800	$2,602,900	$1,928,200
8/31/24	$2,655,000	$3,295,200	$2,336,000

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	14.60%	12.52%	10.26%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.60%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090001

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Class A

Trading Symbol

NPNAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$105	0.98%

Expenses Paid, Amount

$ 105

Expense Ratio, Percent

0.98%

Line Graph [Table Text Block]

	Class A (including sales charge) $24,073	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$9,425	$10,000	$10,000
8/31/15	$8,723	$10,040	$9,652
8/31/16	$9,852	$11,214	$10,899
8/31/17	$11,393	$13,025	$12,161
8/31/18	$12,838	$15,607	$13,677
8/31/19	$13,607	$15,996	$13,762
8/31/20	$14,019	$19,595	$13,877
8/31/21	$20,981	$25,914	$18,935
8/31/22	$20,021	$22,555	$17,756
8/31/23	$21,086	$26,029	$19,282
8/31/24	$24,073	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	14.16%	12.09%	9.83%
Class A (including sales charge)	7.61%	10.76%	9.18%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.98%. Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000089999

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Class C

Trading Symbol

NPNCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$183	1.72%

Expenses Paid, Amount

$ 183

Expense Ratio, Percent

1.72%

Line Graph [Table Text Block]

	Class C (including sales charge) $23,742	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,189	$10,040	$9,652
8/31/16	$10,300	$11,214	$10,899
8/31/17	$11,828	$13,025	$12,161
8/31/18	$13,228	$15,607	$13,677
8/31/19	$13,921	$15,996	$13,762
8/31/20	$14,238	$19,595	$13,877
8/31/21	$21,156	$25,914	$18,935
8/31/22	$20,039	$22,555	$17,756
8/31/23	$20,949	$26,029	$19,282
8/31/24	$23,742	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	13.33%	11.27%	9.03%
Class C (including sales charge)	12.33%	11.27%	9.03%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.72%. Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090000

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Class R3

Trading Symbol

NPNRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$133	1.24%

Expenses Paid, Amount

$ 133

Expense Ratio, Percent

1.24%

Line Graph [Table Text Block]

	Class R3 $24,866	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,236	$10,040	$9,652
8/31/16	$10,398	$11,214	$10,899
8/31/17	$11,986	$13,025	$12,161
8/31/18	$13,471	$15,607	$13,677
8/31/19	$14,243	$15,996	$13,762
8/31/20	$14,633	$19,595	$13,877
8/31/21	$21,842	$25,914	$18,935
8/31/22	$20,789	$22,555	$17,756
8/31/23	$21,837	$26,029	$19,282
8/31/24	$24,866	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	13.87%	11.79%	9.54%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.24%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000150162

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Class R6

Trading Symbol

NRLCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$55	0.51%

Expenses Paid, Amount

$ 55

Expense Ratio, Percent

0.51%

Line Graph [Table Text Block]

	Class R6 $26,485	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,281	$10,040	$9,652
8/31/16	$10,502	$11,214	$10,899
8/31/17	$12,171	$13,025	$12,161
8/31/18	$13,740	$15,607	$13,677
8/31/19	$14,619	$15,996	$13,762
8/31/20	$15,136	$19,595	$13,877
8/31/21	$22,763	$25,914	$18,935
8/31/22	$21,824	$22,555	$17,756
8/31/23	$23,087	$26,029	$19,282
8/31/24	$26,485	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	14.72%	12.62%	10.23%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class R6's inception date of January 18, 2019 is that of the Fund's Investor Class, which had higher expenses than Class R6 so its performance typically would have been lower than that of Class R6. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.52%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000228869

Shareholder Report [Line Items]

Fund Name

Large Cap Value Fund

Class Name

Class E

Trading Symbol

NPNEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$3	0.03%

Expenses Paid, Amount

$ 3

Expense Ratio, Percent

0.03%

Line Graph [Table Text Block]

	Class E $26,625	Russell 1000^® Index $32,952	Russell 1000^® Value Index $23,360
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,281	$10,040	$9,652
8/31/16	$10,502	$11,214	$10,899
8/31/17	$12,171	$13,025	$12,161
8/31/18	$13,740	$15,607	$13,677
8/31/19	$14,599	$15,996	$13,762
8/31/20	$15,071	$19,595	$13,877
8/31/21	$22,614	$25,914	$18,935
8/31/22	$21,723	$22,555	$17,756
8/31/23	$23,097	$26,029	$19,282
8/31/24	$26,625	$32,952	$23,360

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class E	15.27%	12.77%	10.29%
Russell 1000^® Index	26.60%	15.55%	12.66%
Russell 1000^® Value Index	21.15%	11.16%	8.85%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class E's inception date of January 11, 2022 is that of the Fund's Investor Class, which had higher expenses than Class E so its performance typically would have been lower than Class E. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class E: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.45%/0.03% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 1000 Index in order to satisfy a change in regulatory requirements. The Russell 1000 Value Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the Russell 1000 Index.

AssetsNet

$ 9,296,737,542

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 42,340,052

InvestmentCompanyPortfolioTurnover

81.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$9,296,737,542
Number of Portfolio Holdings	74
Portfolio Turnover Rate	81%
Total Investment Advisory Fees Paid	$42,340,052

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Johnson & Johnson	4.1%
Exxon Mobil Corp.	4.0%
Procter & Gamble Co.	3.4%
Duke Energy Corp.	3.4%
PNC Financial Services Group, Inc.	3.4%
Berkshire Hathaway, Inc. Class B	3.3%
Sempra	3.0%
JPMorgan Chase & Co.	2.9%
Walmart, Inc.	2.9%
State Street Institutional U.S. Government Money Market Fund Premier Class	2.8%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021357

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Investor Class

Trading Symbol

NMANX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/mid-cap-growth-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$94	0.85%

Expenses Paid, Amount

$ 94

Expense Ratio, Percent

0.85%

Line Graph [Table Text Block]

	Investor Class $26,137	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$11,074	$10,036	$10,246	$10,002
8/31/16	$10,886	$11,184	$10,963	$10,994
8/31/17	$12,606	$12,980	$12,555	$12,362
8/31/18	$15,977	$15,608	$15,702	$14,574
8/31/19	$16,751	$15,813	$16,638	$14,653
8/31/20	$20,427	$19,203	$20,557	$15,932
8/31/21	$27,704	$25,548	$27,788	$22,502
8/31/22	$20,800	$22,155	$20,371	$19,167
8/31/23	$21,718	$25,424	$23,019	$20,772
8/31/24	$26,137	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	20.35%	9.31%	10.08%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Investor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.86%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021358

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Trust Class

Trading Symbol

NBMTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$104	0.94%

Expenses Paid, Amount

$ 104

Expense Ratio, Percent

0.94%

Line Graph [Table Text Block]

	Trust Class $25,959	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$11,073	$10,036	$10,246	$10,002
8/31/16	$10,877	$11,184	$10,963	$10,994
8/31/17	$12,590	$12,980	$12,555	$12,362
8/31/18	$15,945	$15,608	$15,702	$14,574
8/31/19	$16,708	$15,813	$16,638	$14,653
8/31/20	$20,358	$19,203	$20,557	$15,932
8/31/21	$27,591	$25,548	$27,788	$22,502
8/31/22	$20,699	$22,155	$20,371	$19,167
8/31/23	$21,585	$25,424	$23,019	$20,772
8/31/24	$25,959	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	20.27%	9.21%	10.01%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.95%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021359

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Advisor Class

Trading Symbol

NBMBX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$131	1.19%

Expenses Paid, Amount

$ 131

Expense Ratio, Percent

1.19%

Line Graph [Table Text Block]

	Advisor Class $25,292	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$11,039	$10,036	$10,246	$10,002
8/31/16	$10,814	$11,184	$10,963	$10,994
8/31/17	$12,486	$12,980	$12,555	$12,362
8/31/18	$15,772	$15,608	$15,702	$14,574
8/31/19	$16,486	$15,813	$16,638	$14,653
8/31/20	$20,041	$19,203	$20,557	$15,932
8/31/21	$27,093	$25,548	$27,788	$22,502
8/31/22	$20,269	$22,155	$20,371	$19,167
8/31/23	$21,097	$25,424	$23,019	$20,772
8/31/24	$25,292	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Advisor Class	19.89%	8.94%	9.72%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Advisor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.20%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000027741

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Institutional Class

Trading Symbol

NBMLX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$75	0.68%

Expenses Paid, Amount

$ 75

Expense Ratio, Percent

0.68%

Line Graph [Table Text Block]

	Institutional Class $2,660,800	Russell 3000^® Index $3,207,100	Russell Midcap^® Growth Index $2,740,800	Russell Midcap^® Index $2,496,000
8/31/14	$1,000,000	$1,000,000	$1,000,000	$1,000,000
8/31/15	$1,109,800	$1,003,600	$1,024,600	$1,000,200
8/31/16	$1,093,000	$1,118,400	$1,096,300	$1,099,400
8/31/17	$1,268,200	$1,298,000	$1,255,500	$1,236,200
8/31/18	$1,609,700	$1,560,800	$1,570,200	$1,457,400
8/31/19	$1,691,600	$1,581,300	$1,663,800	$1,465,300
8/31/20	$2,065,700	$1,920,300	$2,055,700	$1,593,200
8/31/21	$2,807,600	$2,554,800	$2,778,800	$2,250,200
8/31/22	$2,111,100	$2,215,500	$2,037,100	$1,916,700
8/31/23	$2,207,100	$2,542,400	$2,301,900	$2,077,200
8/31/24	$2,660,800	$3,207,100	$2,740,800	$2,496,000

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	20.56%	9.48%	10.28%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.70%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077161

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Class A

Trading Symbol

NMGAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$117	1.06%

Expenses Paid, Amount

$ 117

Expense Ratio, Percent

1.06%

Line Graph [Table Text Block]

	Class A (including sales charge) $24,155	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$9,425	$10,000	$10,000	$10,000
8/31/15	$10,421	$10,036	$10,246	$10,002
8/31/16	$10,222	$11,184	$10,963	$10,994
8/31/17	$11,815	$12,980	$12,555	$12,362
8/31/18	$14,944	$15,608	$15,702	$14,574
8/31/19	$15,639	$15,813	$16,638	$14,653
8/31/20	$19,033	$19,203	$20,557	$15,932
8/31/21	$25,774	$25,548	$27,788	$22,502
8/31/22	$19,310	$22,155	$20,371	$19,167
8/31/23	$20,124	$25,424	$23,019	$20,772
8/31/24	$24,155	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	20.03%	9.08%	9.87%
Class A (including sales charge)	13.16%	7.80%	9.22%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.07%. Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077162

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Class C

Trading Symbol

NMGCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$198	1.81%

Expenses Paid, Amount

$ 198

Expense Ratio, Percent

1.81%

Line Graph [Table Text Block]

	Class C (including sales charge) $23,768	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,972	$10,036	$10,246	$10,002
8/31/16	$10,685	$11,184	$10,963	$10,994
8/31/17	$12,255	$12,980	$12,555	$12,362
8/31/18	$15,379	$15,608	$15,702	$14,574
8/31/19	$15,981	$15,813	$16,638	$14,653
8/31/20	$19,301	$19,203	$20,557	$15,932
8/31/21	$25,944	$25,548	$27,788	$22,502
8/31/22	$19,286	$22,155	$20,371	$19,167
8/31/23	$19,955	$25,424	$23,019	$20,772
8/31/24	$23,768	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	19.11%	8.26%	9.04%
Class C (including sales charge)	18.11%	8.26%	9.04%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.82%. Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077164

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Class R3

Trading Symbol

NMGRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$144	1.31%

Expenses Paid, Amount

$ 144

Expense Ratio, Percent

1.31%

Line Graph [Table Text Block]

	Class R3 $24,983	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$11,029	$10,036	$10,246	$10,002
8/31/16	$10,794	$11,184	$10,963	$10,994
8/31/17	$12,446	$12,980	$12,555	$12,362
8/31/18	$15,696	$15,608	$15,702	$14,574
8/31/19	$16,389	$15,813	$16,638	$14,653
8/31/20	$19,889	$19,203	$20,557	$15,932
8/31/21	$26,855	$25,548	$27,788	$22,502
8/31/22	$20,074	$22,155	$20,371	$19,167
8/31/23	$20,866	$25,424	$23,019	$20,772
8/31/24	$24,983	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	19.73%	8.80%	9.59%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 1.33%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000125073

Shareholder Report [Line Items]

Fund Name

Mid Cap Growth Fund

Class Name

Class R6

Trading Symbol

NRMGX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$65	0.59%

Expenses Paid, Amount

$ 65

Expense Ratio, Percent

0.59%

Line Graph [Table Text Block]

	Class R6 $26,846	Russell 3000^® Index $32,071	Russell Midcap^® Growth Index $27,408	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$11,104	$10,036	$10,246	$10,002
8/31/16	$10,944	$11,184	$10,963	$10,994
8/31/17	$12,710	$12,980	$12,555	$12,362
8/31/18	$16,141	$15,608	$15,702	$14,574
8/31/19	$16,981	$15,813	$16,638	$14,653
8/31/20	$20,763	$19,203	$20,557	$15,932
8/31/21	$28,235	$25,548	$27,788	$22,502
8/31/22	$21,257	$22,155	$20,371	$19,167
8/31/23	$22,253	$25,424	$23,019	$20,772
8/31/24	$26,846	$32,071	$27,408	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	20.64%	9.59%	10.38%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Growth Index	19.07%	10.50%	10.61%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratio for fiscal year 2023 was 0.60%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Growth Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 1,695,593,799

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,851,954

InvestmentCompanyPortfolioTurnover

97.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,695,593,799
Number of Portfolio Holdings	78
Portfolio Turnover Rate	97%
Total Investment Advisory Fees Paid	$7,851,954

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Palantir Technologies, Inc. Class A	3.9%
Trade Desk, Inc. Class A	3.3%
Monolithic Power Systems, Inc.	2.7%
Cencora, Inc.	2.5%
Ares Management Corp. Class A	2.5%
Axon Enterprise, Inc.	2.3%
Datadog, Inc. Class A	2.3%
HEICO Corp.	2.2%
W.W. Grainger, Inc.	2.1%
Deckers Outdoor Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021347

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Investor Class

Trading Symbol

NBRVX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/mid-cap-intrinsic-value-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$103	0.96%

Expenses Paid, Amount

$ 103

Expense Ratio, Percent

0.96%

Line Graph [Table Text Block]

	Investor Class $17,789	Russell 3000^® Index $32,071	Russell Midcap^® Value Index $22,215	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$9,891	$10,036	$9,746	$10,002
8/31/16	$10,470	$11,184	$11,001	$10,994
8/31/17	$12,269	$12,980	$12,191	$12,362
8/31/18	$13,766	$15,608	$13,735	$14,574
8/31/19	$11,980	$15,813	$13,305	$14,653
8/31/20	$10,051	$19,203	$13,132	$15,932
8/31/21	$15,487	$25,548	$18,975	$22,502
8/31/22	$14,919	$22,155	$17,495	$19,167
8/31/23	$15,498	$25,424	$18,484	$20,772
8/31/24	$17,789	$32,071	$22,215	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	14.78%	8.23%	5.93%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Investor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.51%/1.50% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021348

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Trust Class

Trading Symbol

NBREX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$129	1.20%

Expenses Paid, Amount

$ 129

Expense Ratio, Percent

1.20%

Line Graph [Table Text Block]

	Trust Class $17,489	Russell 3000^® Index $32,071	Russell Midcap^® Value Index $22,215	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$9,869	$10,036	$9,746	$10,002
8/31/16	$10,442	$11,184	$11,001	$10,994
8/31/17	$12,201	$12,980	$12,191	$12,362
8/31/18	$13,686	$15,608	$13,735	$14,574
8/31/19	$11,902	$15,813	$13,305	$14,653
8/31/20	$9,967	$19,203	$13,132	$15,932
8/31/21	$15,335	$25,548	$18,975	$22,502
8/31/22	$14,736	$22,155	$17,495	$19,167
8/31/23	$15,275	$25,424	$18,484	$20,772
8/31/24	$17,489	$32,071	$22,215	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	14.49%	8.00%	5.75%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.70%/1.25% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000027737

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Institutional Class

Trading Symbol

NBRTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$91	0.85%

Expenses Paid, Amount

$ 91

Expense Ratio, Percent

0.85%

Line Graph [Table Text Block]

	Institutional Class $1,816,600	Russell 3000^® Index $3,207,100	Russell Midcap^® Value Index $2,221,500	Russell Midcap^® Index $2,496,000
8/31/14	$1,000,000	$1,000,000	$1,000,000	$1,000,000
8/31/15	$991,000	$1,003,600	$974,600	$1,000,200
8/31/16	$1,052,200	$1,118,400	$1,100,100	$1,099,400
8/31/17	$1,235,300	$1,298,000	$1,219,100	$1,236,200
8/31/18	$1,390,900	$1,560,800	$1,373,500	$1,457,400
8/31/19	$1,214,300	$1,581,300	$1,330,500	$1,465,300
8/31/20	$1,021,400	$1,920,300	$1,313,200	$1,593,200
8/31/21	$1,576,500	$2,554,800	$1,897,500	$2,250,200
8/31/22	$1,520,500	$2,215,500	$1,749,500	$1,916,700
8/31/23	$1,581,300	$2,542,400	$1,848,400	$2,077,200
8/31/24	$1,816,600	$3,207,100	$2,221,500	$2,496,000

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	14.88%	8.39%	6.15%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.34%/0.85% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090009

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Class A

Trading Symbol

NBRAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$130	1.21%

Expenses Paid, Amount

$ 130

Expense Ratio, Percent

1.21%

Line Graph [Table Text Block]

	Class A (including sales charge) $16,518	Russell 3000^® Index $32,071	Russell Midcap^® Value Index $22,215	Russell Midcap^® Index $24,960
8/31/14	$9,425	$10,000	$10,000	$10,000
8/31/15	$9,309	$10,036	$9,746	$10,002
8/31/16	$9,845	$11,184	$11,001	$10,994
8/31/17	$11,514	$12,980	$12,191	$12,362
8/31/18	$12,922	$15,608	$13,735	$14,574
8/31/19	$11,238	$15,813	$13,305	$14,653
8/31/20	$9,421	$19,203	$13,132	$15,932
8/31/21	$14,484	$25,548	$18,975	$22,502
8/31/22	$13,922	$22,155	$17,495	$19,167
8/31/23	$14,430	$25,424	$18,484	$20,772
8/31/24	$16,518	$32,071	$22,215	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	14.47%	8.01%	5.77%
Class A (including sales charge)	7.91%	6.73%	5.15%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, data please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.75%/1.21% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090010

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Class C

Trading Symbol

NBRCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$209	1.96%

Expenses Paid, Amount

$ 209

Expense Ratio, Percent

1.96%

Line Graph [Table Text Block]

	Class C (including sales charge) $16,252	Russell 3000^® Index $32,071	Russell Midcap^® Value Index $22,215	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$9,798	$10,036	$9,746	$10,002
8/31/16	$10,289	$11,184	$11,001	$10,994
8/31/17	$11,945	$12,980	$12,191	$12,362
8/31/18	$13,302	$15,608	$13,735	$14,574
8/31/19	$11,481	$15,813	$13,305	$14,653
8/31/20	$9,551	$19,203	$13,132	$15,932
8/31/21	$14,583	$25,548	$18,975	$22,502
8/31/22	$13,908	$22,155	$17,495	$19,167
8/31/23	$14,305	$25,424	$18,484	$20,772
8/31/24	$16,252	$32,071	$22,215	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	13.61%	7.20%	4.98%
Class C (including sales charge)	12.61%	7.20%	4.98%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, data please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 2.47%/1.96% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090011

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Class R3

Trading Symbol

NBRRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$156	1.46%

Expenses Paid, Amount

$ 156

Expense Ratio, Percent

1.46%

Line Graph [Table Text Block]

	Class R3 $17,088	Russell 3000^® Index $32,071	Russell Midcap^® Value Index $22,215	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$9,851	$10,036	$9,746	$10,002
8/31/16	$10,397	$11,184	$11,001	$10,994
8/31/17	$12,124	$12,980	$12,191	$12,362
8/31/18	$13,569	$15,608	$13,735	$14,574
8/31/19	$11,776	$15,813	$13,305	$14,653
8/31/20	$9,843	$19,203	$13,132	$15,932
8/31/21	$15,100	$25,548	$18,975	$22,502
8/31/22	$14,479	$22,155	$17,495	$19,167
8/31/23	$14,965	$25,424	$18,484	$20,772
8/31/24	$17,088	$32,071	$22,215	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	14.19%	7.73%	5.50%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 2.01%/1.46% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000210976

Shareholder Report [Line Items]

Fund Name

Mid Cap Intrinsic Value Fund

Class Name

Class R6

Trading Symbol

NBMRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$81	0.75%

Expenses Paid, Amount

$ 81

Expense Ratio, Percent

0.75%

Line Graph [Table Text Block]

	Class R6 $18,047	Russell 3000^® Index $32,071	Russell Midcap^® Value Index $22,215	Russell Midcap^® Index $24,960
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$9,891	$10,036	$9,746	$10,002
8/31/16	$10,470	$11,184	$11,001	$10,994
8/31/17	$12,269	$12,980	$12,191	$12,362
8/31/18	$13,766	$15,608	$13,735	$14,574
8/31/19	$12,003	$15,813	$13,305	$14,653
8/31/20	$10,108	$19,203	$13,132	$15,932
8/31/21	$15,611	$25,548	$18,975	$22,502
8/31/22	$15,077	$22,155	$17,495	$19,167
8/31/23	$15,697	$25,424	$18,484	$20,772
8/31/24	$18,047	$32,071	$22,215	$24,960

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	14.98%	8.50%	6.08%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell Midcap^® Value Index	20.19%	10.80%	8.31%
Russell Midcap^® Index	20.16%	11.24%	9.58%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class R6's inception date of March 29, 2019 is that of the Fund's Investor Class, which had higher expenses than Class R6 so its performance typically would have been lower than that of Class R6. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.71%/0.75% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell Midcap Value Index and the Russell Midcap Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 56,999,028

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 252

InvestmentCompanyPortfolioTurnover

29.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$56,999,028
Number of Portfolio Holdings	72
Portfolio Turnover Rate	29%
Total Investment Advisory Fees Paid	$252

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Vistra Corp.	2.9%
KBR, Inc.	2.6%
Fortune Brands Innovations, Inc.	2.5%
AerCap Holdings NV	2.2%
EOG Resources, Inc.	2.1%
L3Harris Technologies, Inc.	2.1%
FirstEnergy Corp.	2.1%
Teledyne Technologies, Inc.	2.1%
TreeHouse Foods, Inc.	2.0%
FedEx Corp.	2.0%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000082272

Shareholder Report [Line Items]

Fund Name

Multi-Cap Opportunities Fund

Class Name

Institutional Class

Trading Symbol

NMULX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/multi-cap-opportunities-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$99	0.88%

Expenses Paid, Amount

$ 99

Expense Ratio, Percent

0.88%

Line Graph [Table Text Block]

	Institutional Class $2,864,200	S&P 500^® Index $3,388,200
8/31/14	$1,000,000	$1,000,000
8/31/15	$982,000	$1,004,800
8/31/16	$1,069,700	$1,130,900
8/31/17	$1,286,600	$1,314,500
8/31/18	$1,532,900	$1,573,000
8/31/19	$1,577,600	$1,618,900
8/31/20	$1,739,100	$1,974,000
8/31/21	$2,369,300	$2,589,300
8/31/22	$2,022,000	$2,298,600
8/31/23	$2,281,100	$2,665,000
8/31/24	$2,864,200	$3,388,200

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	25.56%	12.67%	11.10%
S&P 500^® Index	27.14%	15.92%	12.98%

AssetsNet

$ 252,051,550

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 942,268

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$252,051,550
Number of Portfolio Holdings	41
Portfolio Turnover Rate	25%
Total Investment Advisory Fees Paid	$942,268

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	5.5%
Berkshire Hathaway, Inc. Class B	5.3%
Apple, Inc.	5.1%
Alphabet, Inc. Class C	4.4%
Brookfield Corp. Class A	3.7%
HCA Healthcare, Inc.	3.6%
Graphic Packaging Holding Co.	3.6%
Motorola Solutions, Inc.	3.3%
Aramark	3.3%
Amazon.com, Inc.	3.1%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000082270

Shareholder Report [Line Items]

Fund Name

Multi-Cap Opportunities Fund

Class Name

Class A

Trading Symbol

NMUAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$141	1.25%

Expenses Paid, Amount

$ 141

Expense Ratio, Percent

1.25%

Line Graph [Table Text Block]

	Class A (including sales charge) $26,042	S&P 500^® Index $33,882
8/31/14	$9,425	$10,000
8/31/15	$9,223	$10,048
8/31/16	$10,010	$11,309
8/31/17	$11,997	$13,145
8/31/18	$14,243	$15,730
8/31/19	$14,604	$16,189
8/31/20	$16,040	$19,740
8/31/21	$21,764	$25,893
8/31/22	$18,517	$22,986
8/31/23	$20,808	$26,650
8/31/24	$26,042	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	25.15%	12.26%	10.70%
Class A (including sales charge)	17.96%	10.94%	10.04%
S&P 500^® Index	27.14%	15.92%	12.98%

AssetsNet

$ 252,051,550

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 942,268

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$252,051,550
Number of Portfolio Holdings	41
Portfolio Turnover Rate	25%
Total Investment Advisory Fees Paid	$942,268

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	5.5%
Berkshire Hathaway, Inc. Class B	5.3%
Apple, Inc.	5.1%
Alphabet, Inc. Class C	4.4%
Brookfield Corp. Class A	3.7%
HCA Healthcare, Inc.	3.6%
Graphic Packaging Holding Co.	3.6%
Motorola Solutions, Inc.	3.3%
Aramark	3.3%
Amazon.com, Inc.	3.1%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000082271

Shareholder Report [Line Items]

Fund Name

Multi-Cap Opportunities Fund

Class Name

Class C

Trading Symbol

NMUCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$224	2.00%

Expenses Paid, Amount

$ 224

Expense Ratio, Percent

2.00%

Line Graph [Table Text Block]

	Class C (including sales charge) $25,658	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$9,716	$10,048
8/31/16	$10,467	$11,309
8/31/17	$12,450	$13,145
8/31/18	$14,671	$15,730
8/31/19	$14,932	$16,189
8/31/20	$16,281	$19,740
8/31/21	$21,924	$25,893
8/31/22	$18,508	$22,986
8/31/23	$20,660	$26,650
8/31/24	$25,658	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	24.19%	11.44%	9.88%
Class C (including sales charge)	23.20%	11.44%	9.88%
S&P 500^® Index	27.14%	15.92%	12.98%

AssetsNet

$ 252,051,550

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 942,268

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$252,051,550
Number of Portfolio Holdings	41
Portfolio Turnover Rate	25%
Total Investment Advisory Fees Paid	$942,268

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	5.5%
Berkshire Hathaway, Inc. Class B	5.3%
Apple, Inc.	5.1%
Alphabet, Inc. Class C	4.4%
Brookfield Corp. Class A	3.7%
HCA Healthcare, Inc.	3.6%
Graphic Packaging Holding Co.	3.6%
Motorola Solutions, Inc.	3.3%
Aramark	3.3%
Amazon.com, Inc.	3.1%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000228874

Shareholder Report [Line Items]

Fund Name

Multi-Cap Opportunities Fund

Class Name

Class E

Trading Symbol

NMUEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$15	0.13%

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.13%

Line Graph [Table Text Block]

	Class E $29,226	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$9,820	$10,048
8/31/16	$10,697	$11,309
8/31/17	$12,866	$13,145
8/31/18	$15,329	$15,730
8/31/19	$15,776	$16,189
8/31/20	$17,391	$19,740
8/31/21	$23,693	$25,893
8/31/22	$20,306	$22,986
8/31/23	$23,089	$26,650
8/31/24	$29,226	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class E	26.58%	13.12%	11.32%
S&P 500^® Index	27.14%	15.92%	12.98%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class E's inception date of January 11, 2022 is that of the Fund's Institutional Class, which had higher expenses than Class E so its performance typically would have been lower than that of Class E. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class E: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.72%/0.12% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

AssetsNet

$ 252,051,550

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 942,268

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$252,051,550
Number of Portfolio Holdings	41
Portfolio Turnover Rate	25%
Total Investment Advisory Fees Paid	$942,268

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	5.5%
Berkshire Hathaway, Inc. Class B	5.3%
Apple, Inc.	5.1%
Alphabet, Inc. Class C	4.4%
Brookfield Corp. Class A	3.7%
HCA Healthcare, Inc.	3.6%
Graphic Packaging Holding Co.	3.6%
Motorola Solutions, Inc.	3.3%
Aramark	3.3%
Amazon.com, Inc.	3.1%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021342

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Trust Class

Trading Symbol

NBRFX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/real-estate-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$115	1.04%

Expenses Paid, Amount

$ 115

Expense Ratio, Percent

1.04%

Line Graph [Table Text Block]

	Trust Class $19,740	S&P 500^® Index $33,882	FTSE Nareit All Equity REITs Index $19,820
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,846	$10,048	$9,967
8/31/16	$11,973	$11,309	$12,496
8/31/17	$12,319	$13,145	$12,728
8/31/18	$12,936	$15,730	$13,551
8/31/19	$15,680	$16,189	$15,661
8/31/20	$15,032	$19,740	$14,400
8/31/21	$20,161	$25,893	$19,597
8/31/22	$17,970	$22,986	$17,685
8/31/23	$16,169	$26,650	$16,322
8/31/24	$19,740	$33,882	$19,820

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	22.09%	4.71%	7.04%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2024 were 1.40%/1.04% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021341

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Institutional Class

Trading Symbol

NBRIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$95	0.85%

Expenses Paid, Amount

$ 95

Expense Ratio, Percent

0.85%

Line Graph [Table Text Block]

	Institutional Class $2,012,700	S&P 500^® Index $3,388,200	FTSE Nareit All Equity REITs Index $1,982,000
8/31/14	$1,000,000	$1,000,000	$1,000,000
8/31/15	$986,600	$1,004,800	$996,700
8/31/16	$1,202,100	$1,130,900	$1,249,600
8/31/17	$1,238,300	$1,314,500	$1,272,800
8/31/18	$1,303,700	$1,573,000	$1,355,100
8/31/19	$1,583,200	$1,618,900	$1,566,100
8/31/20	$1,520,300	$1,974,000	$1,440,000
8/31/21	$2,043,300	$2,589,300	$1,959,700
8/31/22	$1,823,400	$2,298,600	$1,768,500
8/31/23	$1,644,500	$2,665,000	$1,632,200
8/31/24	$2,012,700	$3,388,200	$1,982,000

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	22.39%	4.92%	7.25%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.03%/0.86% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090002

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Class A

Trading Symbol

NREAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$134	1.21%

Expenses Paid, Amount

$ 134

Expense Ratio, Percent

1.21%

Line Graph [Table Text Block]

	Class A (including sales charge) $18,299	S&P 500^® Index $33,882	FTSE Nareit All Equity REITs Index $19,820
8/31/14	$9,268	$10,000	$10,000
2/28/15	$9,268	$10,000	$10,000
8/31/15	$9,268	$10,048	$9,967
8/31/16	$11,249	$11,309	$12,496
8/31/17	$11,544	$13,145	$12,728
8/31/18	$12,110	$15,730	$13,551
8/31/19	$14,654	$16,189	$15,661
8/31/20	$14,023	$19,740	$14,400
8/31/21	$18,775	$25,893	$19,597
8/31/22	$16,705	$22,986	$17,685
8/31/23	$15,004	$26,650	$16,322
8/31/24	$18,299	$33,882	$19,820

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	21.96%	4.54%	6.86%
Class A (including sales charge)	14.97%	3.31%	6.23%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.40%/1.22% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090003

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Class C

Trading Symbol

NRECX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$217	1.96%

Expenses Paid, Amount

$ 217

Expense Ratio, Percent

1.96%

Line Graph [Table Text Block]

	Class C (including sales charge) $18,015	S&P 500^® Index $33,882	FTSE Nareit All Equity REITs Index $19,820
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,762	$10,048	$9,967
8/31/16	$11,759	$11,309	$12,496
8/31/17	$11,980	$13,145	$12,728
8/31/18	$12,477	$15,730	$13,551
8/31/19	$14,987	$16,189	$15,661
8/31/20	$14,226	$19,740	$14,400
8/31/21	$18,912	$25,893	$19,597
8/31/22	$16,696	$22,986	$17,685
8/31/23	$14,887	$26,650	$16,322
8/31/24	$18,015	$33,882	$19,820

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	21.01%	3.75%	6.06%
Class C (including sales charge)	20.01%	3.75%	6.06%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for Class C for fiscal year 2023 were 2.16%/1.97% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000090004

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Class R3

Trading Symbol

NRERX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$162	1.46%

Expenses Paid, Amount

$ 162

Expense Ratio, Percent

1.46%

Line Graph [Table Text Block]

	Class R3 $18,922	S&P 500^® Index $33,882	FTSE Nareit All Equity REITs Index $19,820
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,806	$10,048	$9,967
8/31/16	$11,869	$11,309	$12,496
8/31/17	$12,159	$13,145	$12,728
8/31/18	$12,716	$15,730	$13,551
8/31/19	$15,355	$16,189	$15,661
8/31/20	$14,652	$19,740	$14,400
8/31/21	$19,568	$25,893	$19,597
8/31/22	$17,370	$22,986	$17,685
8/31/23	$15,568	$26,650	$16,322
8/31/24	$18,922	$33,882	$19,820

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	21.55%	4.27%	6.59%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.66%/1.47% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000125071

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Class R6

Trading Symbol

NRREX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$83	0.75%

Expenses Paid, Amount

$ 83

Expense Ratio, Percent

0.75%

Line Graph [Table Text Block]

	Class R6 $20,292	S&P 500^® Index $33,882	FTSE Nareit All Equity REITs Index $19,820
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,874	$10,048	$9,967
8/31/16	$12,031	$11,309	$12,496
8/31/17	$12,412	$13,145	$12,728
8/31/18	$13,077	$15,730	$13,551
8/31/19	$15,895	$16,189	$15,661
8/31/20	$15,279	$19,740	$14,400
8/31/21	$20,543	$25,893	$19,597
8/31/22	$18,362	$22,986	$17,685
8/31/23	$16,570	$26,650	$16,322
8/31/24	$20,292	$33,882	$19,820

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	22.46%	5.01%	7.33%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original costs. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.94%/0.76% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000228872

Shareholder Report [Line Items]

Fund Name

Real Estate Fund

Class Name

Class E

Trading Symbol

NREEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$9	0.08%

Expenses Paid, Amount

$ 9

Expense Ratio, Percent

0.08%

Line Graph [Table Text Block]

	Class E $20,251	S&P 500^® Index $33,882	FTSE Nareit All Equity REITs Index $19,820
8/31/14	$10,000	$10,000	$10,000
8/31/15	$9,846	$10,048	$9,967
8/31/16	$11,973	$11,309	$12,496
8/31/17	$12,319	$13,145	$12,728
8/31/18	$12,936	$15,730	$13,551
8/31/19	$15,680	$16,189	$15,661
8/31/20	$15,032	$19,740	$14,400
8/31/21	$20,161	$25,893	$19,597
8/31/22	$18,072	$22,986	$17,685
8/31/23	$16,427	$26,650	$16,322
8/31/24	$20,251	$33,882	$19,820

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class E	23.28%	5.25%	7.31%
S&P 500^® Index	27.14%	15.92%	12.98%
FTSE Nareit All Equity REITs Index	21.44%	4.82%	7.08%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and an additional index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class E's inception date of January 11, 2022 is that of the Fund's Trust Class, which has higher expenses than Class E so its performance typically would have been lower than that of Class E. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class E: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 0.88%/0.08% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the S&P 500 Index in order to satisfy a change in regulatory requirements. The FTSE Nareit All Equity REITs Index will be maintained as a secondary index as it shows how the Fund’s performance compares to an index with characteristics that are more representative of the Fund’s investment strategy than the S&P 500 Index.

AssetsNet

$ 776,537,593

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 4,242,267

InvestmentCompanyPortfolioTurnover

53.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$776,537,593
Number of Portfolio Holdings	34
Portfolio Turnover Rate	53%
Total Investment Advisory Fees Paid	$4,242,267

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

American Tower Corp.	8.5%
Equinix, Inc.	7.8%
Prologis, Inc.	7.2%
Public Storage	6.5%
AvalonBay Communities, Inc.	5.4%
Welltower, Inc.	4.6%
Iron Mountain, Inc.	4.5%
Simon Property Group, Inc.	4.5%
Ventas, Inc.	4.5%
SBA Communications Corp.	3.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021330

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Investor Class

Trading Symbol

NBMIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/small-cap-growth-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$117	1.01%

Expenses Paid, Amount

$ 117

Expense Ratio, Percent

1.01%

Line Graph [Table Text Block]

	Investor Class $30,710	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,751	$10,036	$10,511	$10,003
8/31/16	$10,411	$11,184	$10,884	$10,862
8/31/17	$12,700	$12,980	$12,668	$12,483
8/31/18	$17,611	$15,608	$16,559	$15,659
8/31/19	$18,325	$15,813	$14,734	$13,640
8/31/20	$22,577	$19,203	$17,280	$14,461
8/31/21	$28,887	$25,548	$23,433	$21,270
8/31/22	$23,125	$22,155	$17,514	$17,466
8/31/23	$23,461	$25,424	$18,701	$18,278
8/31/24	$30,710	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	30.90%	10.88%	11.87%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Investor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.32%/1.31% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021331

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Trust Class

Trading Symbol

NBMOX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$144	1.25%

Expenses Paid, Amount

$ 144

Expense Ratio, Percent

1.25%

Line Graph [Table Text Block]

	Trust Class $30,168	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,730	$10,036	$10,511	$10,003
8/31/16	$10,379	$11,184	$10,884	$10,862
8/31/17	$12,636	$12,980	$12,668	$12,483
8/31/18	$17,494	$15,608	$16,559	$15,659
8/31/19	$18,192	$15,813	$14,734	$13,640
8/31/20	$22,382	$19,203	$17,280	$14,461
8/31/21	$28,583	$25,548	$23,433	$21,270
8/31/22	$22,827	$22,155	$17,514	$17,466
8/31/23	$23,104	$25,424	$18,701	$18,278
8/31/24	$30,168	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	30.57%	10.65%	11.67%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Trust Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.51%/1.41% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021332

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Advisor Class

Trading Symbol

NBMVX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$161	1.40%

Expenses Paid, Amount

$ 161

Expense Ratio, Percent

1.40%

Line Graph [Table Text Block]

	Advisor Class $29,724	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,713	$10,036	$10,511	$10,003
8/31/16	$10,349	$11,184	$10,884	$10,862
8/31/17	$12,582	$12,980	$12,668	$12,483
8/31/18	$17,396	$15,608	$16,559	$15,659
8/31/19	$18,058	$15,813	$14,734	$13,640
8/31/20	$22,186	$19,203	$17,280	$14,461
8/31/21	$28,288	$25,548	$23,433	$21,270
8/31/22	$22,556	$22,155	$17,514	$17,466
8/31/23	$22,801	$25,424	$18,701	$18,278
8/31/24	$29,724	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Advisor Class	30.36%	10.48%	11.51%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Advisor Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.68%/1.61% (before and after any expense reimbursements and/or fee waivers, respectively. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000027734

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Institutional Class

Trading Symbol

NBSMX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$104	0.90%

Expenses Paid, Amount

$ 104

Expense Ratio, Percent

0.90%

Line Graph [Table Text Block]

	Institutional Class $3,143,200	Russell 3000^® Index $3,207,100	Russell 2000^® Growth Index $2,200,600	Russell 2000^® Index $2,165,500
8/31/14	$1,000,000	$1,000,000	$1,000,000	$1,000,000
8/31/15	$1,078,400	$1,003,600	$1,051,100	$1,000,300
8/31/16	$1,048,100	$1,118,400	$1,088,400	$1,086,200
8/31/17	$1,281,800	$1,298,000	$1,266,800	$1,248,300
8/31/18	$1,783,300	$1,560,800	$1,655,900	$1,565,900
8/31/19	$1,861,400	$1,581,300	$1,473,400	$1,364,000
8/31/20	$2,299,100	$1,920,300	$1,728,000	$1,446,100
8/31/21	$2,947,000	$2,554,800	$2,343,300	$2,127,000
8/31/22	$2,361,800	$2,215,500	$1,751,400	$1,746,600
8/31/23	$2,399,100	$2,542,400	$1,870,100	$1,827,800
8/31/24	$3,143,200	$3,207,100	$2,200,600	$2,165,500

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	31.02%	11.05%	12.13%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.13%/0.91% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077149

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Class A

Trading Symbol

NSNAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$145	1.26%

Expenses Paid, Amount

$ 145

Expense Ratio, Percent

1.26%

Line Graph [Table Text Block]

	Class A (including sales charge) $28,567	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$9,425	$10,000	$10,000	$10,000
8/31/15	$10,126	$10,036	$10,511	$10,003
8/31/16	$9,804	$11,184	$10,884	$10,862
8/31/17	$11,949	$12,980	$12,668	$12,483
8/31/18	$16,562	$15,608	$16,559	$15,659
8/31/19	$17,225	$15,813	$14,734	$13,640
8/31/20	$21,201	$19,203	$17,280	$14,461
8/31/21	$27,072	$25,548	$23,433	$21,270
8/31/22	$21,620	$22,155	$17,514	$17,466
8/31/23	$21,883	$25,424	$18,701	$18,278
8/31/24	$28,567	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	30.55%	10.65%	11.73%
Class A (including sales charge)	23.05%	9.34%	11.07%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.53%/1.27% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077150

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Class C

Trading Symbol

NSNCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$231	2.01%

Expenses Paid, Amount

$ 231

Expense Ratio, Percent

2.01%

Line Graph [Table Text Block]

	Class C (including sales charge) $28,134	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,668	$10,036	$10,511	$10,003
8/31/16	$10,250	$11,184	$10,884	$10,862
8/31/17	$12,402	$12,980	$12,668	$12,483
8/31/18	$17,061	$15,608	$16,559	$15,659
8/31/19	$17,607	$15,813	$14,734	$13,640
8/31/20	$21,514	$19,203	$17,280	$14,461
8/31/21	$27,269	$25,548	$23,433	$21,270
8/31/22	$21,614	$22,155	$17,514	$17,466
8/31/23	$21,712	$25,424	$18,701	$18,278
8/31/24	$28,134	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	29.57%	9.83%	10.90%
Class C (including sales charge)	28.57%	9.83%	10.90%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 2.25%/2.02% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000077152

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Class R3

Trading Symbol

NSNRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$174	1.51%

Expenses Paid, Amount

$ 174

Expense Ratio, Percent

1.51%

Line Graph [Table Text Block]

	Class R3 $29,582	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,722	$10,036	$10,511	$10,003
8/31/16	$10,353	$11,184	$10,884	$10,862
8/31/17	$12,587	$12,980	$12,668	$12,483
8/31/18	$17,407	$15,608	$16,559	$15,659
8/31/19	$18,057	$15,813	$14,734	$13,640
8/31/20	$22,173	$19,203	$17,280	$14,461
8/31/21	$28,243	$25,548	$23,433	$21,270
8/31/22	$22,496	$22,155	$17,514	$17,466
8/31/23	$22,716	$25,424	$18,701	$18,278
8/31/24	$29,582	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	30.22%	10.38%	11.46%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R3: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.77%/1.52% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000205810

Shareholder Report [Line Items]

Fund Name

Small Cap Growth Fund

Class Name

Class R6

Trading Symbol

NSRSX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$92	0.80%

Expenses Paid, Amount

$ 92

Expense Ratio, Percent

0.80%

Line Graph [Table Text Block]

	Class R6 $31,227	Russell 3000^® Index $32,071	Russell 2000^® Growth Index $22,006	Russell 2000^® Index $21,655
8/31/14	$10,000	$10,000	$10,000	$10,000
8/31/15	$10,751	$10,036	$10,511	$10,003
8/31/16	$10,411	$11,184	$10,884	$10,862
8/31/17	$12,700	$12,980	$12,668	$12,483
8/31/18	$17,611	$15,608	$16,559	$15,659
8/31/19	$18,399	$15,813	$14,734	$13,640
8/31/20	$22,752	$19,203	$17,280	$14,461
8/31/21	$29,188	$25,548	$23,433	$21,270
8/31/22	$23,416	$22,155	$17,514	$17,466
8/31/23	$23,810	$25,424	$18,701	$18,278
8/31/24	$31,227	$32,071	$22,006	$21,655

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	31.15%	11.16%	12.06%
Russell 3000^® Index	26.14%	15.19%	12.36%
Russell 2000^® Growth Index	17.67%	8.35%	8.21%
Russell 2000^® Index	18.47%	9.68%	8.03%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index and additional indexes. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class R6's inception date of September 7, 2018 is that of the Fund's Investor Class, which had higher expenses than Class R6 so its performance typically would have been lower than that of Class R6. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class R6: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 1.04%/0.81% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower. On July 24, 2024, the Fund began comparing its performance to the Russell 3000 Index in order to satisfy a change in regulatory requirements. The Russell 2000 Growth Index and the Russell 2000 Index will be maintained as additional indices as they show how the Fund’s performance compares to indices with characteristics that are more representative of the Fund’s investment strategy than the Russell 3000 Index.

AssetsNet

$ 413,188,339

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,004,612

InvestmentCompanyPortfolioTurnover

131.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$413,188,339
Number of Portfolio Holdings	94
Portfolio Turnover Rate	131%
Total Investment Advisory Fees Paid	$2,004,612

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

State Street Institutional U.S. Government Money Market Fund Premier Class	3.1%
Fabrinet	2.3%
Halozyme Therapeutics, Inc.	2.0%
Mr. Cooper Group, Inc.	2.0%
RadNet, Inc.	1.9%
MACOM Technology Solutions Holdings, Inc.	1.9%
Piper Sandler Cos.	1.8%
Impinj, Inc.	1.8%
FTAI Aviation Ltd.	1.8%
Credo Technology Group Holding Ltd.	1.7%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000021349

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Investor Class

Trading Symbol

NBSRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$102	0.88%

Expenses Paid, Amount

$ 102

Expense Ratio, Percent

0.88%

Line Graph [Table Text Block]

	Investor Class $29,477	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$10,029	$10,048
8/31/16	$11,081	$11,309
8/31/17	$12,581	$13,145
8/31/18	$14,892	$15,730
8/31/19	$14,490	$16,189
8/31/20	$16,825	$19,740
8/31/21	$22,621	$25,893
8/31/22	$19,523	$22,986
8/31/23	$22,399	$26,650
8/31/24	$29,477	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Investor Class	31.60%	15.26%	11.42%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

During the reporting period, the shareholders approved a change in the Fund's classification from a diversified to a non-diversified Fund and eliminated the related fundamental policy on diversification.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000021350

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Trust Class

Trading Symbol

NBSTX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Trust Class	$123	1.06%

Expenses Paid, Amount

$ 123

Expense Ratio, Percent

1.06%

Line Graph [Table Text Block]

	Trust Class $28,985	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$10,012	$10,048
8/31/16	$11,042	$11,309
8/31/17	$12,523	$13,145
8/31/18	$14,794	$15,730
8/31/19	$14,370	$16,189
8/31/20	$16,662	$19,740
8/31/21	$22,363	$25,893
8/31/22	$19,266	$22,986
8/31/23	$22,058	$26,650
8/31/24	$28,985	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Trust Class	31.40%	15.06%	11.23%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000027738

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Institutional Class

Trading Symbol

NBSLX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$81	0.70%

Expenses Paid, Amount

$ 81

Expense Ratio, Percent

0.70%

Line Graph [Table Text Block]

	Institutional Class $3,002,000	S&P 500^® Index $3,388,200
8/31/14	$1,000,000	$1,000,000
8/31/15	$1,004,600	$1,004,800
8/31/16	$1,112,100	$1,130,900
8/31/17	$1,265,300	$1,314,500
8/31/18	$1,500,200	$1,573,000
8/31/19	$1,462,500	$1,618,900
8/31/20	$1,701,600	$1,974,000
8/31/21	$2,291,600	$2,589,300
8/31/22	$1,981,000	$2,298,600
8/31/23	$2,276,600	$2,665,000
8/31/24	$3,002,000	$3,388,200

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Institutional Class	31.86%	15.47%	11.62%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000077156

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Class A

Trading Symbol

NRAAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$124	1.07%

Expenses Paid, Amount

$ 124

Expense Ratio, Percent

1.07%

Line Graph [Table Text Block]

	Class A (including sales charge) $27,268	S&P 500^® Index $33,882
8/31/14	$9,425	$10,000
8/31/15	$9,434	$10,048
8/31/16	$10,403	$11,309
8/31/17	$11,793	$13,145
8/31/18	$13,932	$15,730
8/31/19	$13,529	$16,189
8/31/20	$15,685	$19,740
8/31/21	$21,044	$25,893
8/31/22	$18,127	$22,986
8/31/23	$20,754	$26,650
8/31/24	$27,268	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class A (at NAV)	31.39%	15.05%	11.21%
Class A (including sales charge)	23.83%	13.70%	10.55%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000077153

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Class C

Trading Symbol

NRACX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$210	1.82%

Expenses Paid, Amount

$ 210

Expense Ratio, Percent

1.82%

Line Graph [Table Text Block]

	Class C (including sales charge) $26,845	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$9,933	$10,048
8/31/16	$10,872	$11,309
8/31/17	$12,234	$13,145
8/31/18	$14,345	$15,730
8/31/19	$13,826	$16,189
8/31/20	$15,909	$19,740
8/31/21	$21,189	$25,893
8/31/22	$18,117	$22,986
8/31/23	$20,589	$26,650
8/31/24	$26,845	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class C (at NAV)	30.39%	14.19%	10.38%
Class C (including sales charge)	29.39%	14.19%	10.38%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000077155

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Class R3

Trading Symbol

NRARX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$152	1.32%

Expenses Paid, Amount

$ 152

Expense Ratio, Percent

1.32%

Line Graph [Table Text Block]

	Class R3 $28,217	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$9,988	$10,048
8/31/16	$10,987	$11,309
8/31/17	$12,419	$13,145
8/31/18	$14,636	$15,730
8/31/19	$14,179	$16,189
8/31/20	$16,395	$19,740
8/31/21	$21,948	$25,893
8/31/22	$18,857	$22,986
8/31/23	$21,539	$26,650
8/31/24	$28,217	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R3	31.01%	14.75%	10.93%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000125072

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Class R6

Trading Symbol

NRSRX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$71	0.61%

Expenses Paid, Amount

$ 71

Expense Ratio, Percent

0.61%

Line Graph [Table Text Block]

	Class R6 $30,266	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$10,051	$10,048
8/31/16	$11,134	$11,309
8/31/17	$12,675	$13,145
8/31/18	$15,039	$15,730
8/31/19	$14,673	$16,189
8/31/20	$17,091	$19,740
8/31/21	$23,042	$25,893
8/31/22	$19,937	$22,986
8/31/23	$22,935	$26,650
8/31/24	$30,266	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class R6	31.96%	15.58%	11.71%
S&P 500^® Index	27.14%	15.92%	12.98%

Material Change Date

Sep. 01, 2023

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Accountant Change Date

Sep. 01, 2023

C000244622

Shareholder Report [Line Items]

Fund Name

Sustainable Equity Fund

Class Name

Class E

Trading Symbol

NRAEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of December 6, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment^{Footnote Reference*}	Costs paid as a percentage of a $10,000 investment
Class E	$7	0.08%

Footnote	Description
Footnote^*	Expenses for a full reporting period would be higher.

Expenses Paid, Amount

$ 7

Expense Ratio, Percent

0.08%

Line Graph [Table Text Block]

	Class E $29,651	S&P 500^® Index $33,882
8/31/14	$10,000	$10,000
8/31/15	$10,029	$10,048
8/31/16	$11,081	$11,309
8/31/17	$12,581	$13,145
8/31/18	$14,892	$15,730
8/31/19	$14,490	$16,189
8/31/20	$16,825	$19,740
8/31/21	$22,621	$25,893
8/31/22	$19,523	$22,986
8/31/23	$22,399	$26,650
8/31/24	$29,651	$33,882

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	5 Years	10 Years
Class E	32.37%	15.40%	11.48%
S&P 500^® Index	27.14%	15.92%	12.98%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted over the past 10 fiscal years, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The performance prior to Class E's inception date of December 6, 2023 is that of the Fund's Investor Class, which had higher expenses than Class E so its performance typically would have been lower than that of Class E. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class E: As stated in the Fund’s most recent prospectus, the estimated total annual operating expense ratios for fiscal year 2024 were 0.55/0.05% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

AssetsNet

$ 1,535,917,187

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,955,958

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$1,535,917,187
Number of Portfolio Holdings	44
Portfolio Turnover Rate	8%
Total Investment Advisory Fees Paid	$6,955,958

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Microsoft Corp.	8.7%
Amazon.com, Inc.	8.0%
Alphabet, Inc. Class A	7.8%
Berkshire Hathaway, Inc. Class B	5.4%
MasterCard, Inc. Class A	4.6%
GoDaddy, Inc. Class A	3.9%
Interactive Brokers Group, Inc. Class A	3.9%
Cigna Group	3.7%
Applied Materials, Inc.	3.4%
Progressive Corp.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Material Fund Changes

This is a summary of certain changes to the Fund since December 6, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by December 18, 2024 at https://www.nb.com/en/us/products/mutual-funds/sustainable-equity-fund?section=documents or upon request at 800.877.9700 or fundinfo@nb.com.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

C000225949

Shareholder Report [Line Items]

Fund Name

U.S. Equity Impact Fund

Class Name

Institutional Class

Trading Symbol

NEQIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://www.nb.com/en/us/products/mutual-funds/us-equity-impact-fund?section=documents. You can also request this information by contacting your financial intermediary or investment provider or at 800.366.6264 or issdl@nb.com.

Additional Information Phone Number

800.366.6264

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$102	0.90%

Expenses Paid, Amount

$ 102

Expense Ratio, Percent

0.90%

Line Graph [Table Text Block]

	Institutional Class $1,266,200	Russell 3000^® Index $1,427,200
3/23/21	$1,000,000	$1,000,000
8/31/21	$1,135,000	$1,136,900
8/31/22	$885,900	$985,900
8/31/23	$1,007,400	$1,131,400
8/31/24	$1,266,200	$1,427,200

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	Since Inception 3/23/21
Institutional Class	25.69%	7.09%
Russell 3000^® Index	26.14%	10.87%

The graph shows the change in value of a hypothetical $1,000,000 investment in the Fund for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Institutional Class: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 4.44%/0.91% (before and after any expense reimbursements and/or fee waivers, respectively). Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Mar. 23, 2021

AssetsNet

$ 14,134,936

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

16.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$14,134,936
Number of Portfolio Holdings	44
Portfolio Turnover Rate	16%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Trane Technologies PLC	4.8%
Graphic Packaging Holding Co.	4.6%
Motorola Solutions, Inc.	4.4%
HCA Healthcare, Inc.	4.3%
Pentair PLC	4.1%
Boston Scientific Corp.	4.1%
Westinghouse Air Brake Technologies Corp.	3.9%
Ecolab, Inc.	3.6%
Brookfield Renewable Corp. Class A	3.5%
NextEra Energy, Inc.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000225950

Shareholder Report [Line Items]

Fund Name

U.S. Equity Impact Fund

Class Name

Class A

Trading Symbol

NEQAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$142	1.26%

Expenses Paid, Amount

$ 142

Expense Ratio, Percent

1.26%

Line Graph [Table Text Block]

	Class A (including sales charge) $11,788	Russell 3000^® Index $14,272
3/23/21	$9,425	$10,000
8/31/21	$10,679	$11,369
8/31/22	$8,299	$9,859
8/31/23	$9,408	$11,314
8/31/24	$11,788	$14,272

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	Since Inception 3/23/21
Class A (at NAV)	25.29%	6.71%
Class A (including sales charge)	18.07%	4.89%
Russell 3000^® Index	26.14%	10.87%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund inclusive of the maximum initial sales charge for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class A: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 5.09%/1.27% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the deduction of the current maximum initial sales charge of 5.75%. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Mar. 23, 2021

AssetsNet

$ 14,134,936

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

16.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$14,134,936
Number of Portfolio Holdings	44
Portfolio Turnover Rate	16%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Trane Technologies PLC	4.8%
Graphic Packaging Holding Co.	4.6%
Motorola Solutions, Inc.	4.4%
HCA Healthcare, Inc.	4.3%
Pentair PLC	4.1%
Boston Scientific Corp.	4.1%
Westinghouse Air Brake Technologies Corp.	3.9%
Ecolab, Inc.	3.6%
Brookfield Renewable Corp. Class A	3.5%
NextEra Energy, Inc.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

C000225951

Shareholder Report [Line Items]

Fund Name

U.S. Equity Impact Fund

Class Name

Class C

Trading Symbol

NEQCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Fund for the period of September 1, 2023 to August 31, 2024.

Shareholder Report Annual or Semi-Annual

Annual Shareholder Report

Additional Information [Text Block]

Additional Information Phone Number

800.877.9700

Additional Information Email

Additional Information Website

Expenses [Text Block]

What were the Fund's costs for the year?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$225	2.01%

Expenses Paid, Amount

$ 225

Expense Ratio, Percent

2.01%

Line Graph [Table Text Block]

	Class C (including sales charge) $12,188	Russell 3000^® Index $14,272
3/23/21	$10,000	$10,000
8/31/21	$11,290	$11,369
8/31/22	$8,715	$9,859
8/31/23	$9,806	$11,314
8/31/24	$12,188	$14,272

Average Annual Return [Table Text Block]

Average Annual Total Returns

	1 Year	Since Inception 3/23/21
Class C (at NAV)	24.29%	5.91%
Class C (including sales charge)	23.29%	5.91%
Russell 3000^® Index	26.14%	10.87%

The graph shows the change in value of a hypothetical $10,000 investment in the Fund for the class noted since inception, including a comparison to a broad-based market index. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Results represent the Fund's past performance, which is not a good predictor of how the Fund will perform in the future. Current performance may be lower or higher than the performance data quoted. For current performance, please visit www.nb.com/performance. Class C: As stated in the Fund’s most recent prospectus, the total annual operating expense ratios for fiscal year 2023 were 6.25%/2.02% (before and after any expense reimbursements and/or fee waivers, respectively). Returns shown with a sales charge reflect the contingent deferred sales charge (CDSC) is of 1.00%, which is reduced to 0% after 1 year. Absent any applicable expense reimbursements and/or fee waivers during certain periods, returns would have been lower.

Performance Inception Date

Mar. 23, 2021

AssetsNet

$ 14,134,936

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

16.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets	$14,134,936
Number of Portfolio Holdings	44
Portfolio Turnover Rate	16%
Total Investment Advisory Fees Paid	$0

Holdings [Text Block]

Top Ten Securities

(as a % of Total Investments^{Footnote Reference*})

Trane Technologies PLC	4.8%
Graphic Packaging Holding Co.	4.6%
Motorola Solutions, Inc.	4.4%
HCA Healthcare, Inc.	4.3%
Pentair PLC	4.1%
Boston Scientific Corp.	4.1%
Westinghouse Air Brake Technologies Corp.	3.9%
Ecolab, Inc.	3.6%
Brookfield Renewable Corp. Class A	3.5%
NextEra Energy, Inc.	3.3%

Footnote	Description
Footnote*	Derivatives (other than options purchased), if any, are excluded from this calculation.

Material Fund Change [Text Block]

Accountant Change Date

Sep. 01, 2023

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Key Fund Statistics

Sector Allocation

(as a % of Total InvestmentsFootnote Reference*)

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Key Fund Statistics

Sector Allocation

(as a % of Total InvestmentsFootnote Reference*)

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Key Fund Statistics

Sector Allocation

(as a % of Total InvestmentsFootnote Reference*)

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Key Fund Statistics

Sector Allocation

(as a % of Total InvestmentsFootnote Reference*)

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Key Fund Statistics

Sector Allocation

(as a % of Total InvestmentsFootnote Reference*)

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

What were the Fund's costs for the year?

Average Annual Total Returns

Key Fund Statistics

Top Ten Securities

(as a % of Total InvestmentsFootnote Reference*)

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