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Restructuring Costs (Narrative) (Details) (USD $)
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3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Dec. 31, 2014
employee
|
Dec. 31, 2013
|
Dec. 31, 2012
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| Restructuring Cost and Reserve [Line Items] | |||||
| Restructuring and Related Activities, Initiation Date | Aug. 19, 2013 | ||||
| Restructuring and Related Cost, Number of Positions Eliminated | 57 | ||||
| Lease Expiration Date | Jul. 31, 2015 | ||||
| Restructuring costs | $ 975,000 | $ 900,000 | $ 1,907,000 | $ 5,753,000 | $ 0 |
| Impairment of intangible assets and prepaid royalties | 700,000 | ||||
| Change in prior estimate | 1,907,000 | ||||
| Restructuring Reserve, Current | 1,200,000 | ||||
| Facility Closing [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Restructuring costs | 2,400,000 | ||||
| Change in prior estimate | 1,936,000 | ||||
| Other Restructuring [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Restructuring costs | 1,700,000 | ||||
| Employee Severance [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Restructuring costs | 1,000,000 | ||||
| Change in prior estimate | $ (29,000) | ||||