XML 44 R33.htm IDEA: XBRL DOCUMENT
v3.8.0.1

FAIR VALUE MEASUREMENT Changes in Fair Value of Recurring Fair Value Measurements Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Thousands | Apr. 01, 2018 | Dec. 31, 2017 | Apr. 02, 2017 | Jan. 01, 2017
--- | --- | --- | --- | ---
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Cash, cash equivalents and restricted cash | $ 79,054 | $ 73,831 | $ 80,439 | $ 103,222
Deferred compensation mutual funds | 24,093 | 22,428 |  |
Held-to-maturity Securities, Fair Value | 164,446 | 172,238 |  |
Total Fair Value |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Cash and cash equivalents | 26,636 | 28,780 |  |
Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Cash and cash equivalents | 0 | 0 |  |
Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Cash and cash equivalents | 0 | 0 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Cash and cash equivalents | 26,636 | 28,780 |  |
Restricted Assets | Total Fair Value |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Restricted cash and cash equivalents | 52,418 | 45,051 |  |
Cash, cash equivalents and restricted cash | 79,054 | 73,831 |  |
Deferred compensation mutual funds | 24,093 | 22,428 |  |
Held-to-maturity Securities, Fair Value | 164,446 | 172,238 |  |
Restricted Assets | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Restricted cash and cash equivalents | 0 | 0 |  |
Cash, cash equivalents and restricted cash | 0 | 0 |  |
Deferred compensation mutual funds | 0 | 0 |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Restricted Assets | Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Restricted cash and cash equivalents | 0 | 0 |  |
Cash, cash equivalents and restricted cash | 0 | 0 |  |
Deferred compensation mutual funds | 0 | 0 |  |
Held-to-maturity Securities, Fair Value | 164,446 | 172,238 |  |
Restricted Assets | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Restricted cash and cash equivalents | 52,418 | 45,051 |  |
Cash, cash equivalents and restricted cash | 79,054 | 73,831 |  |
Deferred compensation mutual funds | 24,093 | 22,428 |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Municipal debt securities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 78,643 | 83,366 |  |
Municipal debt securities | Restricted Assets | Total Fair Value |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 78,643 | 83,366 |  |
Municipal debt securities | Restricted Assets | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Municipal debt securities | Restricted Assets | Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 78,643 | 83,366 |  |
Municipal debt securities | Restricted Assets | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Corporate debt securities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 81,182 | 83,791 |  |
Corporate debt securities | Restricted Assets | Total Fair Value |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 81,182 | 83,791 |  |
Corporate debt securities | Restricted Assets | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Corporate debt securities | Restricted Assets | Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 81,182 | 83,791 |  |
Corporate debt securities | Restricted Assets | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Agency mortgage-backed securities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 3,630 | 4,062 |  |
Agency mortgage-backed securities | Restricted Assets | Total Fair Value |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 3,630 | 4,062 |  |
Agency mortgage-backed securities | Restricted Assets | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
Agency mortgage-backed securities | Restricted Assets | Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 3,630 | 4,062 |  |
Agency mortgage-backed securities | Restricted Assets | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
U.S. government and agency securities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 991 | 1,019 |  |
U.S. government and agency securities | Restricted Assets | Total Fair Value |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 991 | 1,019 |  |
U.S. government and agency securities | Restricted Assets | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 0 | 0 |  |
U.S. government and agency securities | Restricted Assets | Significant Other Observable Inputs (Level 2) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | 991 | 1,019 |  |
U.S. government and agency securities | Restricted Assets | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Held-to-maturity Securities, Fair Value | $ 0 | $ 0 |  |

X
- Definition Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents + References No definition available. + Details
Name: | tbi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Namespace Prefix: | tbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredCompensationPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tbi_RestrictedOrUnrestrictedStatusOfAssetsAxis=tbi_RestrictedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |