INCOME TAXES (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Reclassification
Retirement benefits	$ 8,040	$ 4,729
Allowances for loss contingencies	3,793	5,121
Deferred tax assets:
Accrued employee benefits	12,597	13,944
Long-term contracts and inventory valuation reductions	13,297	9,554
Allowances for loss contingencies	3,793	5,121
Deferred compensation	4,252	4,310
Property, plant and equipment	1,611	1,507
Intangible assets	8,037	2,324
Retirement benefits	8,040	4,729
Tax credit carryforwards	11,151	7,285
Net operating losses carryforwards	14,795	15,662
Other	867	585
Total gross deferred tax assets	78,440	65,021
Valuation allowance	(54,759)	(14,024)
Total deferred tax assets	23,681	50,997
Deferred tax liabilities:
Deferred revenue	(23,981)	(22,507)
Other	(2,248)	(1,943)
Total deferred tax liabilities	(26,229)	(24,450)
Net deferred tax asset		26,547
Net deferred tax liabilities	(2,548)
Unused state tax credits	15,800
Valuation allowance expense	37,600
Deferred tax asset valuation allowance	54,759	$ 14,024
Foreign subsidiaries earnings on which income tax not provided	$ 426,600
Period of cumulative income or loss under assessment to determine if a valuation allowance is required	3 years
Period of historical cumulative loss	3 years
United Kingdom
Deferred tax liabilities:
Foreign subsidiaries earnings on which income tax not provided	$ 394,900
Foreign
Deferred tax liabilities:
Net operating loss carryforwards	47,400
Valuation allowance expense	1,800
U.S.
Deferred tax liabilities:
Valuation allowance expense	35,800
State
Deferred tax liabilities:
Net operating loss carryforwards	$ 33,300