Fair Value of accrued amount receivable as of the balance sheet date.

No definition available.

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It describes about the demand deposits, savings, now and money market deposits as of balance sheet date.

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No definition available.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure.

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No definition available.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

No definition available.

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Represents the carrying value of impaired loans receivables as of the date.

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No definition available.

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Represents the fair value of impaired loans receivables as of the date.

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No definition available.

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- Definition

Carrying amount of mortgagors escrow accounts as of the balance sheet date.

+ References

No definition available.

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Represents the estimation of fair value mortgagors escrow accounts in the reporting period.

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No definition available.

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Represents the carrying value of performing loans receivables.

+ References

No definition available.

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Represents the fair value of performing loans receivables as of the date.

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No definition available.

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.

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Fair value portion of accrued expenses.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

+ References

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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- Definition

Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

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Amount classified as loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

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FAIR VALUE (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Financial Assets, Carrying Value
Cash and cash equivalents, Carrying Value	$ 7,779	$ 10,940	$ 11,714	$ 26,374
Investment securities, available-for-sale, Carrying Value	86,185us-gaap_AvailableForSaleSecurities	77,538us-gaap_AvailableForSaleSecurities
Investment securities, held-to-maturity, Carrying Value	12,454us-gaap_HeldToMaturitySecurities	13,441us-gaap_HeldToMaturitySecurities
Accrued interest receivable, Carrying Value	1,660	1,599
FHLB Stock, Carrying value	4,548us-gaap_FederalHomeLoanBankStock	4,548us-gaap_FederalHomeLoanBankStock
Financial Liabilities, Carrying Value
Time deposits, Carrying Value	146,267us-gaap_TimeDeposits	145,276us-gaap_TimeDeposits
FHLB advances, Carrying value	61,914	53,762
Mortgagors' escrow accounts, Carrying Value	2,224nvsl_MortgagorsEscrowAccounts	4,341nvsl_MortgagorsEscrowAccounts
Financial Assets, Fair Value
Investment securities, available-for-sale, Fair Value	86,185us-gaap_AvailableForSaleSecurities	77,538us-gaap_AvailableForSaleSecurities
Investment securities, held-to-maturity, Fair Value	12,651	13,633
Fair Value, Inputs, Level 1 [Member]
Financial Assets, Carrying Value
Cash and cash equivalents, Carrying Value	7,779	10,940
Accrued interest receivable, Carrying Value	1,660	1,599
Financial Liabilities, Carrying Value
Demand deposits, savings, Now and money market deposits, Carrying Value	232,717	228,183
Accrued interest payable, Carrying Value	73	67
Financial Assets, Fair Value
Cash and Cash Equivalents, Fair Value	7,779	10,940
Accrued interest receivable, Fair Value	1,660	1,599
Financial Liabilities, Fair Value
Demand deposits, savings, Now and money market deposits, Fair Value	232,717	228,183
Accrued interest payable, Fair Value	73	67
Fair Value, Inputs, Level 2 [Member]
Financial Assets, Carrying Value
Investment securities, available-for-sale, Carrying Value	86,185	77,538
Investment securities, held-to-maturity, Carrying Value	12,454	13,441
Loans held for sale, Carrying Value	2,209	1,062
Performing Loans Receivables Carrying Value	362,705	355,943
Financial Liabilities, Carrying Value
Time deposits, Carrying Value	146,267	145,276
FHLB advances, Carrying value	61,914	53,762
Mortgagors' escrow accounts, Carrying Value	2,224	4,341
Financial Assets, Fair Value
Investment securities, available-for-sale, Fair Value	86,185	77,538
Investment securities, held-to-maturity, Fair Value	12,651	13,633
Loans held for sale, Fair Value	2,209	1,062
Performing Loans receivable, net, Fair Value	368,526	359,687
Financial Liabilities, Fair Value
Time deposits, Fair Value	148,292	147,385
FHLB advances, Fair value	62,525	54,148
Mortgagors' escrow accounts, Fair Value	2,224	4,341
Fair Value, Inputs, Level 3 [Member]
Financial Assets, Carrying Value
Impaired Loans Receivables Carrying Value	7,359	7,316
FHLB Stock, Carrying value	4,548	4,548
Financial Assets, Fair Value
Impaired Loans Receivables Fair Value	7,359	7,316
FHLB Stock, Fair Value	$ 4,548	$ 4,548