Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 730,146	$ 681,433
Accounts receivable, net of allowance for doubtful accounts of $1,802 and $2,838, respectively	411,550	440,692
Inventories, net	421,858	381,334
Prepaid expenses and other assets	42,150	28,057
Income taxes receivable	199	146
Total current assets	1,605,903	1,531,662
Property, plant and equipment, net of accumulated depreciation of $423,520 and $406,375, respectively	178,122	166,148
Goodwill	191,616	191,616
Deferred income taxes	4,908	6,572
Other, net	96,157	102,670
Total assets	2,076,706	1,998,668
Current liabilities:
Current installments of long-term debt and capital lease obligations	16,804	12,396
Accounts payable	335,315	326,249
Income taxes payable	3,629	3,534
Accrued liabilities	90,045	70,202
Total current liabilities	445,793	412,381
Long-term debt and capital lease obligations, less current installments	197,766	211,252
Other long-term liabilities	8,236	9,570
Shareholders' equity:
Common stock, $0.10 par value; 145,000 shares authorized; issued and outstanding - 49,822 and 49,330, respectively	4,982	4,933
Additional paid-in capital	640,472	626,306
Retained earnings	788,939	748,402
Accumulated other comprehensive loss	(9,482)	(14,176)
Total shareholders' equity	1,424,911	1,365,465
Total liabilities and shareholders' equity	$ 2,076,706	$ 1,998,668