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Business Realignment (Schedule of Restructuring and Related Costs) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) |  | $ (13) | $ 53 | $ 729 | $ 547
Cost of Goods Sold [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) |  | 16 | 17 | 42 | 411
Selling, General and Administrative Expenses [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) |  | (29) | 35 | 559 | 135
Design and Development Expense [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) |  |  | 1 | 128 | 1
Control Devices [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) | [1] | 32 |  | 160 |
Control Devices [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  | 32 |  | 32 |
Control Devices [Member] | Design and Development Expense [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  |  |  | 128 |
Electronics [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) | [2] | (80) | 16 | 215 | 72
Electronics [Member] | Cost of Goods Sold [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  |  |  |  | 56
Electronics [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  | (80) | 16 | 215 | 16
PST Segment [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Total business realignment costs (benefit) | [3] | 35 | 37 | 354 | 475
PST Segment [Member] | Cost of Goods Sold [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  | 16 | 17 | 42 | 355
PST Segment [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  | $ 19 | 19 | $ 312 | 119
PST Segment [Member] | Design and Development Expense [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance costs |  |  | $ 1 |  | $ 1
[1] | Severance costs for the nine months ended September 30, 2018 related to D&D were $128. Severance costs for the three and nine months ended September 30, 2018 related to SG&A were $32
[2] | Severance costs (benefit) for the three and nine months ended September 30, 2018 related to SG&A were $(80) and $215, respectively. Severance costs for the three and nine months ended September 30, 2017 related to SG&A were $16. Severance costs for the nine months ended September 30, 2017 related to COGS were $56
[3] | Severance costs for the three and nine months ended September 30, 2018 related to SG&A were $19 and $312, respectively. Severance costs for the three and nine months ended September 30, 2018 related to COGS were $16 and $42, respectively. Severance costs for the three months ended September 30, 2017 related to COGS, SG&A and D&D were $17, $19 and $1, respectively. Severance costs for the nine months ended September 30, 2017 related to COGS, SG&A and D&D were $355, $119 and $1, respectively

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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 + Details
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