Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Current assets:
Cash and cash equivalents	$ 33,357	$ 2,726
Short-term investments	19,861
Trade accounts receivable, net of allowance of $1,125 and $376	24,602	49,756
Current portion of notes receivable	3,786	5,290
Inventories, net	145,890	149,548
Costs and estimated earnings in excess of billings	0	12,400
Deferred income tax assets	7,244	7,056
Prepaid expenses and other current assets	9,268	6,327
Total current assets	244,008	233,103
Rental equipment, net	53,873	36,908
Property, plant and equipment, net	49,205	48,480
Goodwill	1,843	1,843
Non-current deferred income tax assets	75	594
Non-current notes receivable	28
Prepaid income taxes	5,848	6,201
Other assets	106	96
Total assets	354,986	327,225
Current liabilities:
Accounts payable trade	4,964	16,737
Accrued expenses and other current liabilities	14,590	16,638
Deferred revenue	3,752	1,093
Deferred income tax liabilities	23	12
Income tax payable	22	159
Total current liabilities	23,351	34,639
Long-term debt		931
Non-current deferred income tax liabilities	2,377	2,597
Total liabilities	25,728	38,167
Commitments and contingencies
Stockholders’ equity:
Preferred stock, 1,000,000 shares authorized, no shares issued and outstanding
Common stock, $.01 par value, 20,000,000 shares authorized,13,147,416 and 12,942,066 shares issued and outstanding	131	129
Additional paid-in capital	70,704	65,985
Retained earnings	260,919	224,008
Accumulated other comprehensive loss	(2,496)	(1,064)
Total stockholders’ equity	329,258	289,058
Total liabilities and stockholders’ equity	$ 354,986	$ 327,225