INCOME TAXES (Details 2) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Retirement benefits	$ 4,729,000	$ 5,678,000
Allowances for loss contingencies	5,121,000	5,441,000
Deferred tax assets:
Accrued employee benefits	13,944,000	11,642,000
Long-term contracts and inventory valuation reductions	9,554,000	14,152,000
Allowances for loss contingencies	5,121,000	5,441,000
Deferred compensation	4,310,000	4,346,000
Property, plant and equipment	1,507,000	1,127,000
Intangible assets	2,324,000	477,000
Retirement benefits	4,729,000	5,678,000
State research and development credit carryforward	7,285,000	4,839,000
Net operating losses carryforwards	15,662,000	18,639,000
Other	585,000	2,048,000
Total gross deferred tax assets	65,021,000	68,389,000
Valuation allowance	(14,024,000)	(8,801,000)
Total deferred tax assets	50,997,000	59,588,000
Deferred tax liabilities:
Deferred revenue	22,507,000	28,865,000
State taxes	6,000	995,000
Other	1,937,000	2,052,000
Deferred tax liabilities	24,450,000	31,912,000
Net deferred tax asset	26,547,000	27,676,000
Unused state tax credits	13,800,000
Change in valuation allowance	5,200,000
Foreign subsidiaries earnings on which income tax provided	10,500,000
Foreign subsidiaries earnings on which income tax not provided	389,800,000
Charge to income tax provision related to Australia	19,831,000	14,502,000	40,332,000
Foreign
Deferred tax liabilities:
Net operating loss carryforwards	51,100,000
State
Deferred tax liabilities:
Net operating loss carryforwards	30,400,000
Adjustments | Reclassification of long-term contracts and inventory valuation reductions
Allowances for loss contingencies	700,000
Deferred tax assets:
Allowances for loss contingencies	$ 700,000