Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total	$ 11,185us-gaap_LongTermDebt	$ 11,185us-gaap_LongTermDebt
Less current maturities	(400)us-gaap_LongTermDebtCurrent	(950)us-gaap_LongTermDebtCurrent
Long-term debt, net of current portion	10,785us-gaap_LongTermDebtNoncurrent	10,235us-gaap_LongTermDebtNoncurrent
Main Street Capital Corporation [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Loans payable to bank	9,000	9,000
Total	9,000
Main Street Capital Corporation [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loans payable to bank	400	300
Total	400
Promissory Note [Member] \| Note with SRS [Member]
Debt Instrument [Line Items]
SRS Note	1,785	1,885
Total	$ 1,785

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Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond 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 942

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-Section S99

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