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Unconsolidated Subsidiaries (Narrative) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Variable Interest Entity [Line Items] |  |
Investments in unconsolidated subsidiaries and related tax positions | $ 25,337 | $ 24,611
Variable interest entity, reporting entity involvement, maximum risk of loss | 5,300 | 5,000
Other noncurrent assets |  |
Variable Interest Entity [Line Items] |  |
Investments in unconsolidated subsidiaries and related tax positions | $ 25,300 | $ 24,600

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