CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net income	$ 4,429	$ 2,339
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation expense	6,484	5,319
Amortization of intangible assets	1,160	1,127
Amortization of debt issuance costs	226	239
Deferred income taxes	(3,824)	(3,005)
Non-cash stock compensation expense	1,326	980
Impairment of assets held for sale	0	96
Gain on sale of property, equipment and real estate	(263)	(684)
Bad debt expense	1,288	259
Change in assets and liabilities
Accounts receivable	(18,521)	(19,973)
Inventories, net	(10,209)	(26,260)
Accounts payable	25,579	28,609
Other assets and liabilities	3,520	(927)
Net cash provided by (used in) operating activities	11,195	(11,881)
Cash flows from investing activities
Purchases of property and equipment	(7,385)	(12,837)
Purchase of business	(2,025)	0
Proceeds on sale-leaseback transactions, net	15,296	0
Proceeds from sale of property, equipment and real estate	390	2,603
Change in restricted assets	291	503
Net cash provided by (used in) investing activities	6,567	(9,731)
Cash flows from financing activities
Proceeds from revolving line of credit	674,169	681,675
Repayments of proceeds from revolving line of credit	(689,535)	(649,913)
Other financing activities	(1,268)	(2,172)
Net cash (used in) provided by financing activities	(16,634)	29,590
Net increase in cash and cash equivalents	1,128	7,978
Cash and cash equivalents
Beginning of period	5,806	1,138
End of period	6,934	9,116
Non-cash investing and financing transactions
Assets acquired under capital lease obligations	$ 6,422	$ 945