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Investments (Narrative) (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 01, 2018 USD ($) | Dec. 31, 2018 USD ($) a facility | Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments |  |  |
Proceeds from sale of equity method investments |  | $ 3,875 | $ 0
Repayment of revolving line of credit from equity method investment |  | $ 1,235 | $ 0
LB Pipe & Coupling Products, LLC |  |  |
Schedule of Equity Method Investments |  |  |
Equity method investment, ownership percentage | 45.00% |  | 45.00%
Equity investments |  |  | $ 3,875
Proceeds from sale of equity method investments | $ 3,875 |  |
Other than temporary impairment of equity method investment |  |  | 413
Repayment of revolving line of credit from equity method investment | 1,235 |  |
Interest income | $ 159 |  |
Equity in income (loss) of nonconsolidated investments |  |  | 386
LB Pipe & Coupling Products, LLC | Capital leased land |  |  |
Schedule of Equity Method Investments |  |  |
Area of land (in acres) | a |  | 5 |
Capital leased assets, number of units | facility |  | 2 |
Capital leases, monthly rent |  | $ 17 |
Capital leases balloon payment in direct financing leases |  | 488 |
LB Pipe & Coupling Products, LLC | Carrying value |  |  |
Schedule of Equity Method Investments |  |  |
Equity investments |  |  | $ 4,288
LB Pipe & Coupling Products, LLC | Third Party |  |  |
Schedule of Equity Method Investments |  |  |
Equity method investment, ownership percentage |  |  | 45.00%
Other equity investments |  |  |
Schedule of Equity Method Investments |  |  |
Equity investments |  | $ 155 | $ 162

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