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Fair Value Measurements - Narrative (Details) (USD $) | 3 Months Ended | 9 Months Ended |  |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 Other Long-term Obligations | Dec. 31, 2013 Other Long-term Obligations | Sep. 30, 2014 Accrued Liabilities | Dec. 31, 2013 Accrued Liabilities | Sep. 30, 2014 Ostial Solutions, LLC [Member] | Sep. 30, 2014 Ostial Solutions, LLC [Member] Developed technology
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges | $ 1,241,000 | $ 8,100,000 | $ 1,360,000 | $ 8,200,000 |  |  |  |  |  |
Contingent consideration liability |  |  |  |  | 1,400,000 | 2,300,000 |  |  |  |
Contingent consideration liability |  |  |  |  |  |  | 365,000 | 274,000 |  |
Fair value reductions to contingent consideration liability | 874,000 | 3,800,000 |  |  |  |  |  |  |  |
Intangible assets impairment charge | 1,102,000 | 8,089,000 | 1,102,000 | 8,089,000 |  |  |  |  | 1,100,000 |
Fair value of intangible assets |  |  |  |  |  |  |  |  |  | $ 447,000

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