Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies Earn-out and Equipment Purchase Commitments and Legal Matters (Details)

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Commitments and Contingencies Earn-out and Equipment Purchase Commitments and Legal Matters (Details) (USD $)
Dec. 31, 2013
Other Commitments [Line Items]  
Purchase obligation $ 35,000,000
Purchase obligation due in next twelve months 32,800,000
Purchase obligation due in second year 2,200,000
Earn-Out Commitment
 
Other Commitments [Line Items]  
Other Commitment $ 1,800,000