Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 4,705	$ 3,186
Accounts receivable, net	163,819	115,288
Inventories, net (includes LIFO debit of $3,172 as of June 30, 2014 and $3,572 as of December 31, 2013)	310,954	286,371
Prepaid expenses and other	9,880	12,786
Total current assets	489,358	417,631
Property and equipment, at cost	366,265	361,368
Accumulated depreciation	(181,197)	(170,484)
Net property and equipment	185,068	190,884
Goodwill	40,787	40,787
Intangible assets, net	34,091	34,535
Other long-term assets	15,127	13,512
Total assets	764,431	697,349
Liabilities
Current portion of long-term debt	3,530	13,090
Accounts payable	147,405	126,012
Accrued payroll	10,822	10,723
Other accrued liabilities	16,757	15,808
Total current liabilities	178,514	165,633
Credit facility revolver	233,783	146,075
Long-term debt		40,104
Other long-term liabilities	14,301	13,445
Deferred income taxes	31,841	33,476
Total liabilities	458,439	398,733
Shareholders' Equity
Preferred stock	0	0
Common stock	125,586	124,118
Accumulated other comprehensive loss	(360)	(437)
Retained earnings	180,766	174,935
Total shareholders' equity	305,992	298,616
Total liabilities and shareholders' equity	$ 764,431	$ 697,349