Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Changes in valuation and qualifying accounts
Balance at Beginning of Period	$ 2,683	$ 1,771	$ 1,822
Additions	59,372	37,098	26,517
Deductions Charged to Reserves	(50,580)	(36,186)	(26,568)
Balance at End of Period	11,475	2,683	1,771
Rebates Fees and Returns Reserves [Member]
Changes in valuation and qualifying accounts
Balance at Beginning of Period	4,799	3,448	5,943
Additions	52,079	11,820	6,729
Deductions Charged to Reserves	(13,126)	(10,469)	(9,224)
Balance at End of Period	$ 43,752	$ 4,799	$ 3,448

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

+ Details

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- Definition

+ References

+ Details

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

+ Details

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