Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities [Abstract]
Accrued compensation	$ 7,050us-gaap_AccruedSalariesCurrent	$ 5,767us-gaap_AccruedSalariesCurrent
Accrued commissions	1,605us-gaap_AccruedSalesCommissionCurrent	1,666us-gaap_AccruedSalesCommissionCurrent
Accrued restructuring	360us-gaap_RestructuringReserve	902us-gaap_RestructuringReserve
Other accrued liabilities	3,854us-gaap_OtherAccruedLiabilitiesCurrent	4,539us-gaap_OtherAccruedLiabilitiesCurrent
Accrued Liabilities, Current	$ 12,869us-gaap_AccruedLiabilitiesCurrent	$ 12,874us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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