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v3.19.3.a.u2

Sale of Building (Details) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Oct. 02, 2018 USD ($) ft² | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gain on sale |  | $ 0 | $ 4,396
Minnetonka, MN |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Area of real estate sold (in sqft) | ft² | 130,000 |  |
Proceeds from sale of buildings | $ 10,000 |  |
Gain on sale |  |  | 4,400
Gain on sale, net of deferred tax |  |  | $ 3,400

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