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Impairment of Assets Held for Sale (Valuation Allowance against Assets and Liabilities Held for Sale) (Details) - Disposal Groups [Member] $ in Thousands | Mar. 31, 2020 USD ($)
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Assets: |
Accounts receivable | $ 21,680
Inventories | 15,313
Other current assets | 704
Other assets | 54
Total assets | 37,751
Valuation, allowance | (13,810)
Total assets, net | 23,941
Liabilities: |
Accounts payable | 7,866
Accrued liabilities | 5,407
Other liabilities | 1,001
Total liabilities | $ 14,274

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