Change in Accounting Principles (Tables)

12 Months Ended

Dec. 31, 2016

New Accounting Pronouncements And Changes In Accounting Principles [Abstract]

Summary of adjustments made to the consolidated financial statements

(dollars in thousands)	Year Ended December 31,
	2014
	Previous Method			As Reported			Effect of Change
Consolidated Statement of Income
Cost of goods sold	$	4,516,704		$	4,524,676		$	7,972
Gross profit		810,501			802,529			(7,972	)
Warehousing, marketing, and administrative expenses		592,050			595,673			3,623
Income before income taxes		194,483			182,888			(11,595	)
Income tax expense		75,285			70,773			(4,512	)
Net income		119,198			112,115			(7,083	)
Net income per share
Basic	$	3.08		$	2.90		$	(0.18	)
Diluted	$	3.05		$	2.87		$	(0.18	)
Consolidated Statement of Comprehensive Income
Net income	$	119,198		$	112,115		$	(7,083	)
Comprehensive income		96,295			89,212			(7,083	)
Consolidated Statement of Cash Flows
Net income	$	119,198		$	112,115		$	(7,083	)
Deferred income taxes		(6,367	)		(10,879	)		(4,512	)
Inventories		(30,319	)		(18,724	)		11,595
Cash provided by operating activities		77,133			77,133			-
Consolidated Statement of Shareholders’ Equity
Retained earnings at beginning of year	$	1,444,238		$	1,438,870		$	(5,368	)
Retained earnings at end of year		1,541,675			1,529,224			(12,451	)