CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income (loss)	$ 1,859us-gaap_NetIncomeLoss	$ (3,288)us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation expense	3,153us-gaap_Depreciation	2,474us-gaap_Depreciation
Amortization of intangible assets	563us-gaap_AmortizationOfIntangibleAssets	563us-gaap_AmortizationOfIntangibleAssets
Amortization of debt issuance costs	113us-gaap_AmortizationOfFinancingCosts	126us-gaap_AmortizationOfFinancingCosts
Deferred income taxes	(2,956)	(1,593)
Non-cash stock compensation expense	670us-gaap_ShareBasedCompensation	485us-gaap_ShareBasedCompensation
Impairment of assets held for sale	0	96
Gain on sale of property, equipment and real estate	(208)us-gaap_GainLossOnDispositionOfAssets1	(1)us-gaap_GainLossOnDispositionOfAssets1
Bad debt expense	951us-gaap_ProvisionForDoubtfulAccounts	256us-gaap_ProvisionForDoubtfulAccounts
Change in assets and liabilities
Accounts receivable	(7,625)	(420)
Inventories, net	(10,078)us-gaap_IncreaseDecreaseInInventories	(13,565)us-gaap_IncreaseDecreaseInInventories
Accounts payable	9,429	24,544
Other assets and liabilities	6,727	(1,321)
Net cash provided by operating activities	2,598	8,356
Cash flows from investing activities
Purchases of property and equipment	(3,920)	(8,449)
Proceeds on sale-leaseback transactions, net	15,296	0
Proceeds from sale of property, equipment and real estate	200	380
Change in restricted assets	578	507
Net cash provided by (used in) investing activities	12,154	(7,562)
Cash flows from financing activities
Proceeds from revolving line of credit	314,229	307,095
Repayments of proceeds from revolving line of credit	(325,814)	(299,548)
Other financing activities	(597)	(1,736)
Net cash (used in) provided by financing activities	(12,182)	5,811
Net increase in cash and cash equivalents	2,570	6,605
Cash and cash equivalents
Beginning of period	5,806	1,138
End of period	8,376	7,743
Non-cash investing and financing transactions
Assets acquired under capital lease obligations	$ 2,227us-gaap_CapitalLeaseObligationsIncurred	$ 0us-gaap_CapitalLeaseObligationsIncurred

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