Restructuring (Reserve Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary of changes in restructuring accrual
Beginning balance	$ 277us-gaap_RestructuringReserve	$ 420us-gaap_RestructuringReserve
Restructuring charges		809us-gaap_RestructuringCharges	3,109us-gaap_RestructuringCharges
Cash payments	(238)us-gaap_PaymentsForRestructuring	(877)us-gaap_PaymentsForRestructuring	(1,123)us-gaap_PaymentsForRestructuring
Non-cash items		(49)	(1,413)
Adjustments to previously accrued charges	(39)	(26)	(153)
Ending balance	0us-gaap_RestructuringReserve	277us-gaap_RestructuringReserve	420us-gaap_RestructuringReserve
Q1 2012 Restructuring Plan [Member]
Summary of changes in restructuring accrual
Beginning balance	0	0
Restructuring charges		0	572
Cash payments	0	0	(512)
Non-cash items		0	0
Adjustments to previously accrued charges	0	0	(60)
Ending balance	0	0	0
Q3 2012 Restructuring Plan [Member]
Summary of changes in restructuring accrual
Beginning balance	0	420
Restructuring charges			2,537
Cash payments	0	(345)	(611)
Non-cash items		(49)	(1,413)
Adjustments to previously accrued charges	0	(26)	(93)
Ending balance	0	0	420
Q4 2013 Restructuring Plan [Member]
Summary of changes in restructuring accrual
Beginning balance	277	0
Restructuring charges		809	0
Cash payments	(238)	(532)	0
Non-cash items		0	0
Adjustments to previously accrued charges	(39)	0	0
Ending balance	$ 0	$ 277	$ 0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost.

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