Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Sep. 30, 2010
ASSETS
Cash and cash equivalents	$ 39,243	$ 33,453
Short-term investments	1,936
Trade accounts receivable, net	19,225	19,107
Current portion of notes receivable, net	2,926	2,400
Inventories, net	72,982	47,395
Deferred income tax asset	6,716	4,542
Other current assets	1,742	3,089
Total current assets	144,770	109,986
Rental equipment, net	10,542	8,003
Property, plant and equipment, net	35,290	33,988
Patents, net	379	558
Goodwill	1,843	1,843
Non-current deferred income tax asset	499	754
Non-current notes receivable, net	4,185	6,131
Other assets	1,264	2,233
Total assets	198,772	163,496
LIABILITIES AND STOCKHOLDERS' EQUITY
Notes payable and current maturities of long-term debt		440
Accounts payable trade	11,007	3,809
Accrued expenses and other current liabilities	12,462	10,793
Deferred revenue	504	1,311
Deferred income tax liability	21
Income tax payable	4,998	2,056
Total current liabilities	28,992	18,409
Long-term debt, net of current maturities		7,260
Non-current deferred income tax liabilities	1,924	1,241
Total liabilities	30,916	26,910
Commitments and contingencies
Stockholders' equity:
Preferred stock
Common stock	63	61
Additional paid-in capital	51,331	47,059
Retained earnings	115,744	89,622
Accumulated other comprehensive income (loss)	718	(156)
Total stockholders' equity	167,856	136,586
Total liabilities and stockholders' equity	$ 198,772	$ 163,496