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Acquisition - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Jul. 02, 2018 | Mar. 31, 2019
Total consideration, net of net asset adjustments |  | $ 57,900
Huen Electric Inc [Member] |  |
Total consideration paid | $ 47,082 | 47,082
Preliminary estimated net asset adjustments | 10,749 | 10,834
Total consideration, net of net asset adjustments | $ 57,831 | 57,916
Huen Electric Inc [Member] | Certain Performance Targets and Continued Employment of Key Executives [Member] |  |
Change in contingent consideration |  | 300
Huen Electric Inc [Member] | Margin Guarantee [Member] |  |
Change in contingent consideration |  | $ 800

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