Long-Term Debt - Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt	$ 20,344	$ 45,286
Less current maturities of long-term debt	(967)	(14,102)
Long-term debt of current maturities	19,377	31,184
Convertible Subordinated Debt \| Convertible senior subordinated debentures at 4.125%, due in February 2027
Debt Instrument [Line Items]
Long-term debt	11,351	10,641
Other notes and lease obligations
Debt Instrument [Line Items]
Long-term debt	4,993	6,536
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Long-term debt	$ 4,000	$ 28,109

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

+ Details

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- Definition

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

+ References

+ Details

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- Definition

Amount of long-term debt and capital lease obligations including current maturities.

+ References

No definition available.

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