OPERATING SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales	$ 287,426	$ 267,133	$ 237,708	$ 216,490	$ 242,409	$ 225,969	$ 216,314	$ 212,655	$ 1,008,757	$ 897,347	$ 764,891
Depreciation and amortization									36,790	30,656	18,543
Operating income									183,590	163,294	138,431
Capital expenditures									18,328	15,262	9,446
Total assets	1,533,015				1,192,846				1,533,015	1,192,846	941,069
Flight Support Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales									665,148	570,325	539,563
Depreciation and amortization									14,614	10,451	10,661
Operating income									122,058	103,943	95,001
Capital expenditures									10,190	7,045	6,866
Total assets	679,839				487,188				679,839	487,188	458,624
Electronic Technologies Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales									350,033	331,598	227,771
Depreciation and amortization									21,392	19,365	7,502
Operating income									83,063	77,438	59,465
Capital expenditures									7,748	7,248	2,543
Total assets	759,807				636,660				759,807	636,660	429,869
Other Primarily Corporate and Inter Segment [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales									(6,424)	(4,576)	(2,443)
Depreciation and amortization									784	840	380
Operating income									(21,531)	(18,087)	(16,035)
Capital expenditures									390	969	37
Total assets	$ 93,369				$ 68,998				$ 93,369	$ 68,998	$ 52,576