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Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Fair Values of Plan Assets by Major Asset Category (Details)

v3.10.0.1
Employee Benefit Plans - Fair Values of Plan Assets by Major Asset Category (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets $ 5,313 $ 5,356 $ 4,937
Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 407 165 Ìý
Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 813 670 Ìý
Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 2,448 2,468 Ìý
Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 1,645 2,053 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 5,313 5,356 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 407 165 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 813 670 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 2,448 2,468 Ìý
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 1,645 2,053 Ìý
Significant Other Observable Inputs (Level 2) Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Other Observable Inputs (Level 2) | Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Cash and cash equivalents — money markets Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Equities Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Equity funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets 0 0 Ìý
Significant Unobservable Inputs (Level 3) | Fixed income funds Ìý Ìý Ìý
Defined Benefit Plan Disclosure [Line Items] Ìý Ìý Ìý
Fair value of plan assets $ 0 $ 0 Ìý