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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts [Text Block] | Schedule II Valuation and Qualifying Accounts The Company maintains an allowance for the distributors’ ship and debit credits relating to the sell-through of the Company’s products. This reserve is established using the Company’s historical ship and debit amounts and levels of inventory in the distributor channels. The following is a summary of the activity in the allowance for ship and debit credits:
(in thousands) | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Deductions(1) |  | Balance at End of Period
Allowance for ship and debit credits: |  |  |  |  |  |  |
Year ended December 31, 2015 | $ | 27,425 |  |  | $ | 195,669 |  |  | $ | (188,679 | ) |  | $ | 34,415 |
Year ended December 31, 2016 | 34,415 |  |  | 262,501 |  |  | (258,841 | ) |  | 38,075 |
Year ended December 31, 2017 | $ | 38,075 |  |  | $ | 273,492 |  |  | $ | (272,081 | ) |  | $ | 39,486 |
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(1) | Deductions relate to ship and debit credits issued which adjust the sell-in price from the standard distribution price to the pre-approved lower price. Refer to Note 2, Significant Accounting Policies and Recent Accounting Pronouncements, for the Company’s revenue recognition policy, including the Company’s accounting for ship and debit claims.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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