CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 20,812	$ 22,326
Accounts receivable, less allowance for doubtful accounts of $19,725 in 2014 and $20,608 in 2013	702,527	643,379
Inventories	926,809	830,295
Other current assets	30,042	29,255
Total current assets	1,680,190	1,525,255
Property, plant and equipment, at cost
Land	13,105	13,185
Buildings	62,370	62,235
Fixtures and equipment	331,163	318,013
Leasehold improvements	29,841	28,860
Capitalized software costs	91,624	83,026
Total property, plant and equipment	528,103	505,319
Less: accumulated depreciation and amortization	389,886	362,269
Net property, plant equipment	138,217	143,050
Intangible assets, net	111,958	65,502
Goodwill	398,042	356,811
Other long-term assets	41,810	25,576
Total assets	2,370,217	2,116,194
Current liabilities:
Accounts payable	485,241	476,113
Accrued liabilities	192,792	191,531
Current maturities of long-term debt	851	373
Total current liabilities	678,884	668,017
Deferred income taxes	17,763	29,552
Long-term debt	713,058	533,324
Other long-term liabilities	104,394	59,787
Total liabilities	1,514,099	1,290,680
Stockholders’ equity:
Common stock, $0.10 par value; authorized - 100,000,000 shares, issued - 74,435,628 shares in 2014 and 2013	7,444	7,444
Additional paid-in capital	412,291	411,954
Treasury stock, at cost – 35,719,041 shares in 2014 and 34,714,083 shares in 2013	(1,042,501)	(998,234)
Retained earnings	1,541,675	1,444,238
Accumulated other comprehensive loss	(62,791)	(39,888)
Total stockholders’ equity	856,118	825,514
Total liabilities and stockholders’ equity	$ 2,370,217	$ 2,116,194