CONSOLIDATED STATEMENTS OF CASH FLOW (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating activities:
Net income	$ 16,389	$ 12,931	$ 10,155
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,241	7,289	7,537
Impairment of goodwill	0	0	3,350
Intangible asset impairment	1,163	0	0
Contingent consideration write-off	(1,235)	0	0
Restricted stock compensation	1,254	1,794	1,672
Charges for inventory obsolescence and valuation	820	1,099	1,940
Change in deferred tax assets and liabilities	1,253	(166)	(1,224)
Other noncash items	(227)	(240)	(123)
Changes in operating assets and liabilities, net of acquired businesses:
Trade accounts receivable	(8,871)	1,440	(7,971)
Inventories	(6,753)	(544)	15,037
Prepaid expenses and other assets	(1,080)	800	(91)
Current income taxes	818	(735)	21
Accounts payable	4,354	639	(4,768)
Accrued expenses	1,049	2,538	(3,118)
Net cash provided by operating activities	16,175	26,845	22,417
Investing activities:
Additions to property, plant and equipment	(10,267)	(7,151)	(3,938)
Proceeds from sale of equipment	270	6	123
Acquisitions, net of cash acquired	0	0	(9,990)
Other, net	0	0	(48)
Net cash used by investing activities	(9,997)	(7,145)	(13,853)
Financing activities:
Principal payments on long-term debt and notes payable	(180)	(327)	(498)
Advances on revolving line of credit	0	13,520	43,819
Payments on revolving line of credit	0	(30,520)	(51,819)
Other, net	(77)	(457)	(64)
Net cash used by financing activities	(257)	(17,784)	(8,562)
Net increase (decrease) in cash and cash equivalents	5,921	1,916	2
Cash and cash equivalents, beginning of year	1,947	31	29
Cash and cash equivalents, end of year	7,868	1,947	31
Supplemental disclosures of cash flow information:
Interest paid	490	531	1,518
Income taxes paid, net of refunds received	$ 5,032	$ 6,360	$ 6,950