XML 99 R103.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Income Taxes (Summary of Tax Years Subject to Examination by Major Taxing Jurisdictions) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2019
Federal [Member] | Earliest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2016
Federal [Member] | Latest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2019
State and Local [Member] | Arkansas [Member] | Earliest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2016
State and Local [Member] | Arkansas [Member] | Latest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2019
State and Local [Member] | Idaho [Member] | Earliest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2016
State and Local [Member] | Idaho [Member] | Latest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2019
State and Local [Member] | Michigan [Member] | Earliest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2015
State and Local [Member] | Michigan [Member] | Latest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2019
State and Local [Member] | Minnesota [Member] | Earliest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2015
State and Local [Member] | Minnesota [Member] | Latest Tax Year [Member] |
Income Tax Examination [Line Items] |
Tax years subject to examination | 2019

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_IncomeTaxExaminationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_OpenTaxYear
Namespace Prefix: | us-gaap_
Data Type: | us-types:gYearListItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_EarliestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_LatestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_AR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_ID
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MI
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |