Quarterly report pursuant to Section 13 or 15(d)

Summary Of Significant Accounting Policies Summary of Adoption of 606 (Details)

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Summary Of Significant Accounting Policies Summary of Adoption of 606 (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Jan. 01, 2018
Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Accounts receivable, net $ 316,415 $ 260,456 $ 429,381 $ 364,862
Inventories 405,971 398,842 433,890 457,927
Prepaid expenses and other current assets 72,788 40,863 70,782 58,559
Total current assets 1,603,368 1,290,637 1,702,202 1,649,497
Total assets 2,188,684 1,888,074 2,288,572 2,212,902
Accrued liabilities 206,145 126,866 243,568 182,228
Total current liabilities 383,734 227,917 515,206 453,636
Total liabilities 497,331 296,057 622,213 560,643
Total liabilities and equity 2,188,684 1,888,074 2,288,572 2,212,902
Net sales 607,308 543,793    
Gross profit 299,438 258,467    
Selling, general and administrative expenses 243,368 $ 212,815    
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Accounts receivable, net 56,768   64,519  
Inventories (18,175)   (24,037)  
Prepaid expenses and other current assets 18,175   24,037  
Total current assets 56,768   64,519  
Total assets 56,768   64,000  
Accrued liabilities 56,768   61,340  
Total current liabilities 56,768   61,570  
Total liabilities 56,768   61,570  
Total liabilities and equity 56,768   $ 64,000  
Net sales 8,257      
Gross profit 8,257      
Selling, general and administrative expenses 8,257      
Calculated under Revenue Guidance in Effect before Topic 606 [Member]        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Accounts receivable, net 259,647     364,862
Inventories 424,146     457,927
Prepaid expenses and other current assets 54,613     58,559
Total current assets 1,546,600     1,649,497
Total assets 2,131,916     2,212,902
Accrued liabilities 149,377     182,228
Total current liabilities 326,966     453,636
Total liabilities 440,563     560,643
Total liabilities and equity 2,131,916     $ 2,212,902
Net sales 599,051      
Gross profit 291,181      
Selling, general and administrative expenses $ 235,111