Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Sep. 30, 2011
ASSETS
Cash and cash equivalents	$ 37,842	$ 31,388
Short-term investments	4,956	4,926
Trade accounts receivable, net	22,474	19,761
Current portion of notes receivable, net	1,671	2,100
Inventories, net	64,334	72,390
Deferred income tax assets	6,043	6,356
Other current assets	1,837	5,660
Total current assets	139,157	142,581
Rental equipment, net	26,240	11,945
Property, plant and equipment, net	34,250	34,692
Patents, net	259	319
Goodwill	1,843	1,843
Non-current deferred income tax assets	427	505
Non-current notes receivable, net	3,195	3,706
Other assets	5,017	1,210
Total assets	210,388	196,801
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable trade	7,550	5,042
Accrued expenses and other current liabilities	10,867	11,384
Deferred revenue	1,067	774
Deferred income tax liability	10	82
Income tax payable	3,581	399
Total current liabilities	23,075	17,681
Non-current deferred income tax liability	1,856	2,107
Total liabilities	24,931	19,788
Commitments and contingencies
Stockholders' equity:
Preferred stock
Common stock	64	64
Additional paid-in capital	57,709	57,446
Retained earnings	128,018	119,333
Accumulated other comprehensive income (loss)	(334)	170
Total stockholders' equity	185,457	177,013
Total liabilities and stockholders' equity	$ 210,388	$ 196,801