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Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 70,090	$ 144,083
Less current maturities	73	77
Total long-term debt	70,017	144,006
Capital lease obligations
Debt Instrument [Line Items]
Total debt	0	23
Other notes payable
Debt Instrument [Line Items]
Total debt	90	60
Bank revolving credit facility | Amended and Restated Revolving Credit Agreement | Unsecured Debt
Debt Instrument [Line Items]
Total debt	$ 70,000	$ 144,000

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
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