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Acquisition Activity (Schedule of Acquisition Costs) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 31, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition costs | $ 443 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 443 | $ 0 | $ 0
Dynamic Systems Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  |  |  |  |  |  | 443 |  |
Accounting and legal fees | Dynamic Systems Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  |  |  |  |  |  | 214 |  |
Appraisal fees | Dynamic Systems Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  |  |  |  |  |  | 13 |  |
Other | Dynamic Systems Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition costs |  |  |  |  |  |  |  |  | $ 216 |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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