Annual report pursuant to Section 13 and 15(d)

Valuation and Qualifying Accounts (Details)

v3.10.0.1
Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
SEC Schedule, 12-09, Allowance, Credit Loss [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ (9,043) $ (8,556) $ (9,928)
Charged to Costs and Expenses 3,908 3,296 2,037
Deductions [1] (1,392) (3,174) (3,406)
Valuation Allowances and Reserves, Adjustments [2] (508) 365 (3)
Balance at End of Period (11,051) (9,043) (8,556)
Allowance For Sales Returns And Miscellaneous Claims [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period (46,306) (39,768) (40,510)
Charged to Costs and Expenses 0 80,116 49,822
Deductions [1] 0 (75,066) (50,548)
Valuation Allowances and Reserves, Adjustments [2] 0 1,488 (16)
Balance at End of Period $ 0 $ (46,306) $ (39,768)
[1] Charges to the accounts included in this column are for the purposes for which the reserves were created.
[2] Amounts included in this column primarily relate to foreign currency translation.