Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 401,869	$ 345,555
Accounts receivable, net of allowance for doubtful accounts of $292 and $338, respectively	499,479	559,763
Inventories, net	421,216	396,699
Prepaid expenses and other assets	33,134	26,283
Income taxes receivable	2,631	3,231
Deferred income taxes	6,902	11,302
Total current assets	1,365,231	1,342,833
Long-term investments	9,710	9,921
Property, plant and equipment, net of accumulated depreciation of $357,502 and $346,500 respectively	190,686	185,319
Goodwill, net	45,970	44,691
Deferred income taxes	32,042	33,856
Other, net	37,838	40,751
Total assets	1,681,477	1,657,371
Current liabilities:
Current installments of capital lease obligations	628	582
Accounts payable	298,762	320,953
Income taxes payable	5,553	9,570
Accrued liabilities	72,731	67,272
Total current liabilities	377,674	398,377
Capital lease obligations, less current installments	9,194	9,521
Other long-term liabilities	21,680	20,369
Deferred income taxes	2,071	2,071
Shareholders' equity:
Preferred shares, $0.10 par value; 5,000 shares authorized, none issued
Common shares, $0.10 par value; 145,000 shares authorized; issued - 54,070 and 53,936, respectively; outstanding - 53,959 and 53,825, respectively	5,396	5,383
Additional paid-in capital	653,853	644,594
Retained earnings	621,377	586,422
Accumulated other comprehensive loss	(9,496)	(9,094)
Less treasury shares, at cost; 111 shares	(272)	(272)
Total shareholders' equity	1,270,858	1,227,033
Commitments and contingencies
Total liabilities and shareholders' equity	$ 1,681,477	$ 1,657,371