Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 4,267	$ 3,009
Accounts receivable, net	213,422	132,737
Inventories, net (includes LIFO debit of $662 as of September 30, 2018 and $5,337 as of December 31, 2017)	366,198	275,307
Prepaid expenses and other	5,219	8,333
Assets held for sale		750
Total current assets	589,106	420,136
Property and equipment, at cost	398,524	376,710
Accumulated depreciation	(239,862)	(229,062)
Net property and equipment	158,662	147,648
Intangible assets, net	27,519	22,980
Other long-term assets	13,980	13,394
Total assets	789,267	604,158
Liabilities
Current portion of long-term debt		930
Accounts payable	118,134	84,034
Accrued payroll	19,265	11,999
Other accrued liabilities	11,595	14,184
Total current liabilities	148,994	111,147
Credit facility revolver	304,484	196,235
Other long-term liabilities	12,724	12,048
Deferred income taxes	14,718	12,145
Total liabilities	480,920	331,575
Shareholders' Equity
Preferred stock
Common stock	130,597	129,453
Treasury stock	(132)	(337)
Retained earnings	177,882	143,467
Total shareholders' equity	308,347	272,583
Total liabilities and shareholders' equity	$ 789,267	$ 604,158