Goodwill and Intangible Assets (Goodwill Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2014	Dec. 31, 2013
Changes in the Carrying Amount of Goodwill
Beginning balance	$ 56,975	$ 56,493
Goodwill acquired during the period	0	0
Impairment charges	0	0
Adjustments to goodwill during the period	0	482
Ending balance	56,975	56,975
Gross goodwill	231,219
Accumulated impairment charges	$ (174,244)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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