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Employee Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2018
Pension Benefits [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Components of Net Periodic Benefit Cost |
﻿ |  |  |  |  |
﻿ |  |  |  |  |
﻿ | Three Months Ended
﻿ | March 31,
﻿Pension Benefits | 2018 |  | 2017
﻿Interest cost | $ | 427 |  | $ | 446
﻿Expected return on plan assets |  | (711) |  |  | (642)
﻿Amortization of unrecognized net loss |  | 113 |  |  | 119
﻿Plan curtailment and special termination benefits |  | - |  |  | 270
﻿ | $ | (171) |  | $ | 193
﻿
Postretirement Benefit Plan [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Components of Net Periodic Benefit Cost |
﻿ |  |  |  |  |
﻿ |  |  |  |  |
﻿ | Three Months Ended
﻿ | March 31,
﻿Postretirement Benefit Plan | 2018 |  | 2017
﻿Service cost | $ | 8 |  | $ | 12
﻿Interest cost |  | 45 |  |  | 50
﻿Settlement income |  | - |  |  | -
﻿Amortization of prior service cost |  | 4 |  |  | 4
﻿Amortization of unrecognized net (gain) loss |  | (70) |  |  | (80)
﻿Plan curtailment and special termination benefits |  | - |  |  | 150
﻿ | $ | (13) |  | $ | 136
﻿

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- 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
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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