Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Current assets:
Cash and cash equivalents	$ 15,092	$ 10,262	$ 22,314
Short-term investments	36,137	27,491	18,112
Trade accounts receivable, net of allowance of $1,395, $2,449 and $2,516	9,435	15,392	12,693
Financing receivables	3,055	1,533	2,004
Income tax receivable	273	13,290	17,369
Inventories	20,752	30,844	32,422
Prepaid expenses and other current assets	1,623	1,826	1,295
Total current assets	86,367	100,638	106,209
Rental equipment, net	16,462	30,973	46,036
Property, plant and equipment, net	37,399	44,732	48,709
Non-current inventories	55,935	73,696	92,378
Deferred income tax assets, net	259	216	4,554
Non-current financing receivables, net of allowance of $1,020, $500 and $0	8,195	1,817	1,516
Prepaid income taxes	450	2,620	4,095
Other assets	629	80	95
Total assets	205,696	254,772	303,592
Current liabilities:
Accounts payable trade	2,599	2,120	4,077
Accrued expenses and other current liabilities	6,338	7,849	9,679
Deferred revenue	1,568	174	165
Income tax payable		125	3
Total current liabilities	10,505	10,268	13,924
Deferred income tax liabilities	37	37	44
Total liabilities	10,542	10,305	13,968
Commitments and contingencies (Note 18)
Stockholders’ equity:
Preferred stock, 1,000,000 shares authorized, no shares issued and outstanding
Common stock, $.01 par value, 20,000,000 shares authorized, 13,438,316, 13,328,066 and 13,147,916 shares issued and outstanding	134	133	131
Additional paid-in capital	83,733	77,967	74,160
Retained earnings	125,517	182,308	228,278
Accumulated other comprehensive loss	(14,230)	(15,941)	(12,945)
Total stockholders’ equity	195,154	244,467	289,624
Total liabilities and stockholders’ equity	$ 205,696	$ 254,772	$ 303,592