CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 2,918	$ (767)
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	10,818	10,638
Amortization of deferred financing costs	90	176
Loss on early extinguishment of debt		1,220
Increase (decrease) in allowance for doubtful accounts and lease reserves	11	(28)
Gain (loss) on disposition of assets	(34)	14
Stock grants	325	351
Gain on change in fair value of interest rate derivatives	(181)	(89)
Gain on change in fair value of fuel commodity derivatives	(53)	(250)
Increase (decrease) in deferred income taxes	(224)	4
Non-cash stock compensation	601	644
(Increase) decrease in accounts receivable	666	(114)
Increase in inventory	(888)	(497)
Increase in prepaid facilities management rent and other assets	(1,434)	(703)
Decrease in accounts payable, accrued facilities management rent, accrued expenses and other liabilities	(568)	(4,117)
Net cash flows provided by operating activities	12,047	6,482
Cash flows from investing activities:
Capital expenditures	(8,677)	(7,734)
Payments for acquisitions	(2,018)
Proceeds from sale of assets	34	36
Net cash flows used in investing activities	(10,661)	(7,698)
Cash flows from financing activities:
Payments on capital lease obligations	(341)	(362)
Payment on senior notes		(100,000)
Payments on secured revolving credit facility	(19,547)	(106,473)
Borrowings on secured revolving credit facility	20,120	230,797
Payments on secured term credit facility		(18,750)
Proceeds from exercise of stock options	49	163
Proceeds from issuance of common stock	120	140
Debt acquisition costs		(1,497)
Cash dividend paid	(1,279)	(876)
Repurchase of common stock		(2,000)
Net cash flows provided by (used in) financing activities	(878)	1,142
Increase (decrease) in cash and cash equivalents	508	(74)
Cash and cash equivalents, beginning of period	14,328	13,881
Cash and cash equivalents, end of period	14,836	13,807
Supplemental disclosure of non-cash investing and financing activities:
Capital lease agreements	188	0
Fair value of net assets acquired	2,737
Consideration paid in cash	2,018
Future cash payment	$ 719