Interim Financial Information - Cumulative Effect of the Changes Made and Impact of Applying Topic 606 on the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Assets
Accounts and notes receivable, net	$ 178,339	$ 200,234	$ 188,611
Inventories, net	1,721,249	1,759,633	1,763,293
Prepaid expenses and other current assets	80,957	50,745	42,062
Liabilities
Accounts payable	442,577	414,737	412,981
Deferred income taxes	138,478	127,897	124,404
Stockholders' equity
Retained earnings	1,339,185	1,257,720	1,246,323
Balances Without Adoption of Topic 606
Assets
Accounts and notes receivable, net	166,795		188,611
Inventories, net	1,724,761		1,763,293
Prepaid expenses and other current assets	73,091		42,062
Liabilities
Accounts payable	440,763		412,981
Deferred income taxes	135,199		124,404
Stockholders' equity
Retained earnings	1,328,380		$ 1,246,323
Adjustment due to Topic 606 \| ASU 2014-09
Assets
Accounts and notes receivable, net	11,544	11,623
Inventories, net	(3,512)	(3,660)
Prepaid expenses and other current assets	7,866	8,683
Liabilities
Accounts payable	1,814	1,756
Deferred income taxes	3,279	3,493
Stockholders' equity
Retained earnings	$ 10,805	$ 11,397

The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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