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Concentrations of Credit Risk (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Concentration Risk [Line Items]
Foreign exchange fluctuations loss	$ 0.1	$ 0.2
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Diplomat Specialty Pharmacy [Member]
Concentration Risk [Line Items]
Concentration risk (as a percentage)	21.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Caremark L.L.C. [Member]
Concentration Risk [Line Items]
Concentration risk (as a percentage)	18.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Affiliates of McKesson Corporation [Member]
Concentration Risk [Line Items]
Concentration risk (as a percentage)	16.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Accredo Health, Incorporated [Member]
Concentration Risk [Line Items]
Concentration risk (as a percentage)	12.00%

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+ References

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 830
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