Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Provisional tax benefit recognized for remeasurement of deferred tax liability			$ 12,000
United States	$ 304,259	$ 278,311	259,436
Foreign	13,215	14,682	9,746
Total	317,474	292,993	269,182
Current [Abstract]
Federal	35,270	39,504	71,329
State and other	17,168	14,609	11,289
Current tax	52,438	54,113	82,618
Deferred [Abstract]
Federal	4,154	4,676	(6,643)
State and other	(431)	(15)	2,007
Deferred tax	3,723	4,661	(4,636)
Total	$ 56,161	$ 58,774	$ 77,982
Reconciliation of U.S. federal statutory tax rate to effective tax rate [Abstract]
Federal statutory rate (in hundredths)	21.00%	21.00%	35.00%
Change in valuation allowance (in hundredths)	0.10%	(0.13%)	(0.06%)
Stock-based compensation (as a percent)	(7.40%)	(5.23%)	(4.67%)
Federal tax reform (as a percent)	0.00%	0.00%	(4.46%)
Other, primarily state income tax rate (in hundredths)	3.99%	4.42%	3.16%
Total effective tax rate (in hundredths)	17.69%	20.06%	28.97%
Deferred tax assets [Abstract]
Product inventories	$ 5,740	$ 5,413
Accrued expenses	927	776
Leases	42,698	1,189
Share-based compensation	9,245	9,427
Uncertain tax positions	2,852	2,558
Net operating losses	4,807	5,058
Deferred Tax Assets, Hedging Transactions	66
Other	2,889	2,080
Total noncurrent	69,224	26,501
Less: Valuation allowance, non-current	(4,794)	(5,058)
Component reclassified for net presentation	(63,699)	(20,897)
Total non-current, net	731	546
Total deferred tax assets	731	546
Deferred tax liabilities [Abstract]
Trade discounts on purchases	2,326	2,094
Prepaid expenses	2,821	1,804
Deferred Tax Liabilities, Leasing Arrangements	41,418
Intangible assets, primarily goodwill	32,331	30,988
Depreciation	17,401	14,924
Interest rate swaps	0	486
Total non-current	96,297	50,296
Component reclassified for net presentation	(63,699)	(20,897)
Deferred income taxes	32,598	29,399
Total deferred tax liabilities	32,598	29,399
Net deferred tax liability	31,867	28,853
Uncertain tax positions activity [Roll Forward]
Beginning balance	12,179	9,937	$ 7,846
Increases for tax positions taken during a prior period	771	76	129
Increases for tax positions taken during the current period	2,354	3,809	3,260
Decreases resulting from the expiration of the statute of limitations	1,390	1,603	869
Decreases relating to settlements	332	40	429
Ending balance	13,582	12,179	9,937
Unrecognized tax benefits that, if recognized, would decrease the effective tax rate	10,700	9,600
Interest expense related to unrecognized tax benefits	600	200	200
Accrued interest on unrecognized tax benefits	1,700	1,100
International Subsidiaries [Member]
Loss Carryforwards [Line Items]
Tax loss carry-forwards	17,700
Deferred tax asset, valuation allowance	4,600	5,100
Adjustments for New Accounting Pronouncement [Member]
Loss Carryforwards [Line Items]
Excess tax benefits recognized as a result of the adoption	$ 23,500	$ 15,300	$ 12,600