Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term debt	$ 22,909	$ 20,344
Less current maturities of long-term debt	(843)	(967)
Long-term debt net of current maturities	22,066	19,377
Convertible Subordinated Debt \| Convertible Senior Subordinated Debentures at 4.125% February 2027
Debt Instrument [Line Items]
Long-term debt	11,542	11,351
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term debt	4,267	4,993
Senior secured revolving credit facility, due in January 2018 [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Long-term debt	7,100	0
Senior secured revolving credit facility, due in October 2015 [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 4,000

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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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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

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+ References

No definition available.

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