CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities
Net income	$ 8,241	$ 8,499
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,208	3,975
Amortization of deferred financing fees	92	65
Losses on disposals of property and equipment		15
Deferred income taxes	787	923
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable, net	(335)	(2,135)
Inventories	558	2,611
Prepaid expenses and other current assets	2,449	336
Other non-current assets	(57)	185
Accounts payable	2,380	2,772
Accrued expenses	(1,174)	(1,303)
Other non-current liabilities	102	(240)
Net cash provided by operating activities	17,251	15,703
Cash flows from investing activities
Acquisitions of businesses	(6,490)	(7,403)
Purchases of property and equipment	(4,746)	(3,364)
Net cash used in investing activities	(11,236)	(10,767)
Cash flows from financing activities
Proceeds from debt	4,000	8,000
Payments on debt	(4,000)	(9,000)
Payments of deferred financing fees		(878)
Proceeds from issuances of common stock	342	660
Repurchases of common stock	(3,761)	(1,933)
Tax benefit from stock option exercises	195	250
Net cash used in financing activities	(3,224)	(2,901)
Effect of exchange rate changes on cash	10	75
Net increase in cash	2,801	2,110
Cash at beginning of period	2,441	3,740
Cash at end of period	$ 5,242	$ 5,850