XML 70 R59.htm IDEA: XBRL DOCUMENT v3.19.1

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense related to net securities gains	$ 71	$ 171
Tax benefit due to a change in tax law, treatment of acquired life insurance assets	$ 185

X

- References

No definition available.

+ Details

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

X

- Definition

Income Tax Expense (Benefit), Change In Tax Law, Acquired Life Insurance Assets

+ References

No definition available.

+ Details

Name:	wfx_IncomeTaxExpenseBenefitChangeInTaxLawAcquiredLifeInsuranceAssets
Namespace Prefix:	wfx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Provision for income taxes related to net security gains.

+ References

No definition available.

+ Details

Name:	wfx_ProvisionForIncomeTaxesRelatedToNetSecurityGains
Namespace Prefix:	wfx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration