Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Expected Contractual Cash Commitments (Parenthetical) (Details)

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Commitments and Contingencies - Expected Contractual Cash Commitments (Parenthetical) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Expected contractual cash commitments  
Reserve for uncertain tax positions $ 1,432us-gaap_UnrecognizedTaxBenefits