XML 24 R9.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Use of Estimates | 6 Months Ended
--- | ---
Jun. 30, 2014
Use of Estimates [Abstract] |
Use of Estimates [Text Block] | Note 2 - Use of Estimates Preparing financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period, as well as the disclosures provided. Actual results could differ from those estimates. Estimates associated with the allowance for loan losses, fair values of foreclosed real estate, loan servicing rights, investment securities, deferred tax assets, goodwill, and the status of contingencies are particularly susceptible to material change in the near term.

X
- Details
Name: | nwin_UseOfEstimatesAbstract
Namespace Prefix: | nwin_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for use of estimates. + References No definition available. + Details
Name: | nwin_UseOfEstimatesTextBlock
Namespace Prefix: | nwin_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration