CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 20,448	$ 1,991
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,901	2,711
Provision for bad debts	3	18
Deferred income taxes	(17,208)
Stock compensation expense-restricted stock	155	124
Changes in operating assets and liabilities:
Accounts receivable, gross	3,129	(1,611)
Inventory	36	160
Prepaid expenses and other	(126)	(230)
Other long-term assets	52	(69)
Accounts payable	(3,929)	(1,661)
Accrued expenses, accrued salaries and other	(372)	396
Other long-term liabilities	(266)	(91)
Net cash provided by operating activities	4,823	1,738
Cash flows from investing activities:
Capital expenditures	(3,291)	(4,703)
Proceeds from disposition of assets		1
Net change in noncurrent assets and liabilities	(10)	(9)
Net cash used in investing activities	(3,301)	(4,711)
Cash flows from financing activities:
Borrowings on equipment loan		1,800
Payments on equipment loan	(1,620)	(90)
Capital lease payments	(326)	(321)
Loan commitment fees	(131)	(37)
Net cash (used in) provided by financing activities	(2,077)	1,352
Net decrease in cash and cash equivalents	(555)	(1,621)
Cash and cash equivalents, beginning of period	4,005	3,283
Cash and cash equivalents, end of period	3,450	1,662
Supplemental cash flow disclosures:
Cash paid for interest	151	148
Non-cash investing and financing activities:
Capital lease for warehouse and computer equipment	1,201	862
Capital expenditures in accounts payable	$ 1,477	$ 287