CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 9,957	$ 50,752
Short-term investments		19,960
Trade accounts receivable, net	33,164	16,229
Current portion of notes receivable, net	7,054	3,806
Inventories, net	137,503	83,894
Costs and estimated earnings in excess of billings	28,387
Deferred income tax assets	6,861	6,689
Prepaid expenses and other current assets	3,896	5,898
Total current assets	226,822	187,228
Rental equipment, net	33,572	27,853
Property, plant and equipment, net	45,686	34,433
Goodwill	1,843	1,843
Non-current deferred income tax assets	167	307
Non-current notes receivable, net	389	1,687
Prepaid income taxes	6,695	5,479
Other assets	110	192
Total assets	315,284	259,022
Current liabilities:
Accounts payable trade	20,561	17,187
Accrued expenses and other current liabilities	14,367	13,978
Deferred revenue	734	8,641
Deferred income tax liabilities		111
Income taxes payable	2,457	1,275
Total current liabilities	38,119	41,192
Non-current deferred income tax liabilities	2,584	2,843
Total liabilities	40,703	44,035
Commitments and contingencies
Stockholder's equity:
Preferred stock
Common stock	129	128
Additional paid-in capital	64,903	60,633
Retained earnings	210,324	154,451
Accumulated other comprehensive loss	(775)	(225)
Total stockholder's equity	274,581	214,987
Total liabilities and stockholder's equity	$ 315,284	$ 259,022