CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net income	$ 10,460	$ 7,313
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation expense	10,074	8,054
Amortization of intangible assets	1,756	1,690
Amortization of debt issuance costs	339	353
Deferred income taxes	(3,783)	(4,030)
Non-cash stock compensation expense	2,101	1,848
Impairment of assets held for sale	0	96
Gain on sale of property, equipment and real estate	(370)	(1,076)
Bad debt expense	1,801	417
Change in assets and liabilities
Accounts receivable	(24,535)	(19,756)
Inventories, net	(9,693)	(23,445)
Accounts payable	11,871	26,951
Other assets and liabilities	13,461	6,396
Net cash provided by operating activities	13,482	4,811
Cash flows from investing activities
Purchases of property and equipment	(12,329)	(20,795)
Purchase of business	(2,025)	0
Proceeds on sale-leaseback transactions, net	15,296	0
Proceeds from sale of property, equipment and real estate	1,005	3,493
Change in restricted assets	310	2
Net cash provided by (used in) investing activities	2,257	(17,300)
Cash flows from financing activities
Proceeds from revolving line of credit	1,055,182	1,046,220
Repayments of proceeds from revolving line of credit	(1,068,832)	(1,023,476)
Payments on capital leases	(2,419)	(1,177)
Other financing activities	(94)	(1,972)
Net cash (used in) provided by financing activities	(16,163)	19,595
Net (decrease) increase in cash and cash equivalents	(424)	7,106
Cash and cash equivalents
Beginning of period	5,806	1,138
End of period	5,382	8,244
Non-cash investing and financing transactions
Assets acquired under capital lease obligations	$ 10,298	$ 1,783