BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	3 Months Ended			12 Months Ended			3 Months Ended																																										3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013	Mar. 31, 2013 Search And Rescue [Member]	Jun. 30, 2013 Revolving Credit Facility [Member] First Amendment [Member]	Jun. 30, 2013 Revolving Credit Facility [Member] Third Amendment [Member]	Jun. 30, 2013 Assets Held-for-sale [Member]	Jun. 30, 2012 Assets Held-for-sale [Member]	Jun. 30, 2013 One British Pound Sterling Into Us Dollars [Member] High [Member] Quarter To Date [Member]	Jun. 30, 2012 One British Pound Sterling Into Us Dollars [Member] High [Member] Quarter To Date [Member]	Jun. 30, 2013 One British Pound Sterling Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2012 One British Pound Sterling Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2013 One British Pound Sterling Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2012 One British Pound Sterling Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2013 One British Pound Sterling Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2012 One British Pound Sterling Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2013 One Euro Into Us Dollars [Member] High [Member] Quarter To Date [Member]	Jun. 30, 2012 One Euro Into Us Dollars [Member] High [Member] Quarter To Date [Member]	Jun. 30, 2013 One Euro Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2012 One Euro Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2013 One Euro Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2012 One Euro Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2013 One Euro Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2012 One Euro Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2013 One Australian Dollar Into Us Dollars [Member] High [Member]	Jun. 30, 2012 One Australian Dollar Into Us Dollars [Member] High [Member]	Jun. 30, 2013 One Australian Dollar Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2012 One Australian Dollar Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2013 One Australian Dollar Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2012 One Australian Dollar Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2013 One Australian Dollar Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2012 One Australian Dollar Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2013 One Nigerian Naira Into Us Dollars [Member] High [Member] Quarter To Date [Member]	Jun. 30, 2012 One Nigerian Naira Into Us Dollars [Member] High [Member] Quarter To Date [Member]	Jun. 30, 2013 One Nigerian Naira Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2012 One Nigerian Naira Into Us Dollars [Member] Average [Member] Quarter To Date [Member]	Jun. 30, 2013 One Nigerian Naira Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2012 One Nigerian Naira Into Us Dollars [Member] Low [Member] Quarter To Date [Member]	Jun. 30, 2013 One Nigerian Naira Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2012 One Nigerian Naira Into Us Dollars [Member] At period-end [Member] Quarter To Date [Member]	Jun. 30, 2013 One Brazilian Real Into Us Dollars [Member] High [Member]	Jun. 30, 2012 One Brazilian Real Into Us Dollars [Member] High [Member]	Jun. 30, 2013 One Brazilian Real Into Us Dollars [Member] Average [Member]	Jun. 30, 2012 One Brazilian Real Into Us Dollars [Member] Average [Member]	Jun. 30, 2013 One Brazilian Real Into Us Dollars [Member] Low [Member]	Jun. 30, 2012 One Brazilian Real Into Us Dollars [Member] Low [Member]	Jun. 30, 2013 One Brazilian Real Into Us Dollars [Member] At period-end [Member]	Jun. 30, 2012 One Brazilian Real Into Us Dollars [Member] At period-end [Member]	Jun. 30, 2013 Impact of Changes in Foreign Currency Exchange Rates [Member] Quarter To Date [Member]
Foreign Currency [Line Items]
Foreign currency exchange rates									1.57	1.62	1.54	1.58	1.50	1.53	1.52	1.57	1.34	1.33	1.31	1.28	1.28	1.24	1.30	1.27	1.07	1.04	1.00	1.01	0.92	0.97	0.92	1.03	0.0065	0.0065	0.0064	0.0063	0.0062	0.0061	0.0062	0.0062	0.5123	0.5488	0.4857	0.5125	0.4434	0.4811	0.4492	0.4816
Revenues	$ 398,994,000	$ 362,608,000																																															$ (2,988,000)
Operating expense	(355,126,000)	(319,289,000)																																															1,673,000
Earnings from unconsolidated affiliates, net of losses	13,972,000	1,989,000																																															2,729,000
Non-operating expense																																																	(342,000)
Income before provision for income taxes	34,502,000	30,376,000																																															1,072,000
Provision for income taxes	(7,590,000)	(6,180,000)																																															(236,000)
Net income	26,912,000	24,196,000																																															836,000
Cumulative translation adjustment																																																	(4,559,000)
Total stockholders' investment	1,627,907,000		1,610,957,000																																														(3,723,000)
Foreign currency transaction gain/loss	(1,400,000)	(900,000)
Impact of Foreign Exchange Rates on Unconsolidated affiliates	(400,000)	(3,100,000)
Accounts Receivable [Line Items]
Allowance for doubtful accounts, affiliates	0		0
Allowance For Doubtful Accounts Non-Affiliates	5,000,000		5,100,000
Inventories [Line Items]
Impairment of inventories	800,000
Property And Equipment [Line Items]
Impairment of Long-Lived Assets to be Disposed of							1,200,000	1,900,000
Number of Impairment of Long-Lived Assets to be Disposed of							2	7
Property, Plant and Equipment, Number of Aircraft Sold	4	4
Proceeds from Sale of Flight Equipment	1,900,000	20,200,000
Net gain/loss from aircraft and other equipment sold	(500,000)	(3,400,000)
Deferred financing fees				12,700,000
Debt Instrument, Face Amount					$ 200,000,000	$ 350,000,000