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Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 85,298 | $ 60,082
Less current maturities | 119 | 82
Total long-term debt | 85,179 | 60,000
Capital lease obligations |  |
Debt Instrument [Line Items] |  |
Total debt | 298 | 0
Other notes payable |  |
Debt Instrument [Line Items] |  |
Total debt | 0 | 82
Bank revolving credit facility | Amended and Restated Revolving Credit Agreement | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Total debt | $ 85,000 | $ 60,000

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