Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Current Assets:
Cash and cash equivalents	$ 56,464	$ 103,118
Accounts receivable, less allowance for doubtful accounts of $1,844 and $1,577	131,253	107,162
Costs and estimated earnings in excess of billings on uncompleted contracts	84,922	95,970
Inventories	36,630	32,815
Income taxes receivable	3,356	2,804
Deferred income taxes	5,106	5,297
Prepaid expenses	4,752	5,870
Other current assets	4,334	4,291
Total Current Assets	326,817	357,327
Property, plant and equipment, net	165,426	156,896
Goodwill	1,003	1,003
Intangible assets, net	1,762	1,904
Deferred income taxes	11,900	11,422
Other assets	9,313	8,224
Long-term receivable (Note D)	4,667	4,667
Total Assets	520,888	541,443
Current Liabilities:
Current maturities of long-term debt and capital lease obligations	400	400
Income taxes payable		705
Accounts payable	59,610	70,209
Accrued salaries, bonuses and commissions	14,089	25,206
Billings in excess of costs and estimated earnings on uncompleted contracts	59,280	48,702
Accrued product warranty	4,480	4,557
Other accrued expenses	4,355	6,291
Deferred credit ─ short term (Note D)	2,029	2,029
Total Current Liabilities	144,243	158,099
Long-term debt and capital lease obligations, net of current maturities	2,400	2,800
Deferred compensation	5,376	4,226
Other long-term liabilities	655	655
Deferred credit ─ long term (Note D)	4,059	4,566
Total Liabilities	156,733	170,346
Commitments and Contingencies (Note F)
Stockholders' Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued
Common stock, par value $.01; 30,000,000 shares authorized; 12,059,692 and 12,031,243 shares issued and outstanding, respectively	121	120
Additional paid-in capital	46,929	46,267
Retained earnings	327,846	331,213
Accumulated other comprehensive loss	(10,741)	(6,503)
Total Stockholders' Equity	364,155	371,097
Total Liabilities and Stockholders' Equity	$ 520,888	$ 541,443