Troubled Debt Restructures - Breakdown of Types of Concessions Made by Loan Class (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($) Contract	Dec. 31, 2015 USD ($) Contract	Dec. 31, 2014 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	4	10	10
Pre-Modification Outstanding Recorded Investment	$ 482	$ 684	$ 1,326
Post-Modification Outstanding Recorded Investment	$ 328	$ 673	$ 1,326
Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract			1
Pre-Modification Outstanding Recorded Investment			$ 32
Post-Modification Outstanding Recorded Investment			$ 32
Extended Maturity [Member] \| Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract			1
Pre-Modification Outstanding Recorded Investment			$ 32
Post-Modification Outstanding Recorded Investment			$ 32
Other Payment Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	4	10	9
Pre-Modification Outstanding Recorded Investment	$ 482	$ 684	$ 1,294
Post-Modification Outstanding Recorded Investment	$ 328	$ 673	$ 1,294
Other Payment Terms [Member] \| Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract		2
Pre-Modification Outstanding Recorded Investment		$ 46
Post-Modification Outstanding Recorded Investment		$ 44
Other Payment Terms [Member] \| Real Estate - Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract			3
Pre-Modification Outstanding Recorded Investment			$ 424
Post-Modification Outstanding Recorded Investment			$ 424
Other Payment Terms [Member] \| Other Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract		1
Pre-Modification Outstanding Recorded Investment		$ 55
Post-Modification Outstanding Recorded Investment		$ 55
Other Payment Terms [Member] \| Real Estate - Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	4	6	6
Pre-Modification Outstanding Recorded Investment	$ 482	$ 530	$ 870
Post-Modification Outstanding Recorded Investment	$ 328	$ 521	$ 870
Other Payment Terms [Member] \| Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract		1
Pre-Modification Outstanding Recorded Investment		$ 53
Post-Modification Outstanding Recorded Investment		$ 53

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=uwhr_OtherPaymentTermsConcessionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=uwhr_CommercialRealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=uwhr_OtherRealEstateConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=uwhr_ResidentialRealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=uwhr_OtherLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: