CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Statement of Financial Position [Abstract]
Accounts receivable, net allowances	$ 6,426	$ 5,342
Contract costs, net of progress payments	8,001	16,467
Debt discount, long term debt	$ (2,695)	$ (5,594)
Preferred stock, par value (in Dollars per share)	$ 0.25	$ 0.25
Preferred stock, share authorized (in Shares)	3,000,000	3,000,000
Preferred stock, shares issued (in Shares)	0	0
Common stock, par value (in Dollars per share)	$ 0.25	$ 0.25
Common stock, share authorized (in Shares)	85,000,000	85,000,000
Common stock, shares issued (in Shares)	79,966,000	79,080,000
Treasury shares (in Shares)	34,797,000	30,737,000