Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Sep. 30, 2018
Current Assets:
Cash and cash equivalents	$ 71,921	$ 36,584
Short-term investments	6,109	13,170
Restricted cash	8,188	19,154
Accounts receivable, less allowance for doubtful accounts of $205 and $157	108,551	92,548
Contract assets	57,231	82,545
Inventories	29,484	21,352
Income taxes receivable	72	6,904
Prepaid expenses	3,316	3,775
Other current assets	2,398	630
Total Current Assets	287,270	276,662
Property, plant and equipment, net	121,909	128,764
Restricted cash	8,476	5,987
Goodwill and intangible assets, net	1,381	1,514
Deferred income taxes	6,960	5,937
Other assets	11,110	11,087
Total Assets	437,106	429,951
Current Liabilities:
Current maturities of long-term debt	400	400
Accounts payable	38,483	40,714
Contract liabilities	60,868	43,174
Accrued compensation and benefits	16,078	22,274
Accrued product warranty	3,180	2,604
Income taxes payable	507	897
Other current liabilities	10,285	7,786
Total Current Liabilities	129,801	117,849
Long-term debt, net of current maturities	800	1,200
Deferred compensation	6,497	5,902
Other long-term liabilities	4,349	3,356
Total Liabilities	141,447	128,307
Commitments and Contingencies (Note F)
Stockholders' Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued	0	0
Common stock, par value $.01; 30,000,000 shares authorized; 12,358,566 and 12,280,556 shares issued, respectively	124	123
Additional paid-in capital	57,838	56,769
Retained earnings	285,891	291,530
Treasury stock, 806,018 shares at cost	(24,999)	(24,999)
Accumulated other comprehensive loss	(23,195)	(21,779)
Total Stockholders' Equity	295,659	301,644
Total Liabilities and Stockholders' Equity	$ 437,106	$ 429,951