COMMITMENTS AND CONTINGENCIES (Details) (USD $)	3 Months Ended								3 Months Ended			3 Months Ended				0 Months Ended	3 Months Ended	0 Months Ended																										3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jul. 11, 2013	Jul. 11, 2013 Medium Aircraft [Member]	Jul. 11, 2013 Large Aircraft [Member]	Jul. 11, 2013 Medium and Large [Member]	Jul. 11, 2013 SAR Configured [Member]	Jul. 11, 2013 AW 189 Large Aircraft [Member] Subsequent Event [Member]	Jun. 30, 2013 Aircraft [Member]	Jun. 30, 2012 Aircraft [Member]	Jun. 30, 2013 S92 Aircraft [Member]	Jun. 30, 2013 United Kingdom Location [Member]	Jun. 30, 2013 Norway Location [Member]	Jun. 30, 2013 Australia Location [Member]	Jun. 30, 2013 Commitments [Member]	Jul. 11, 2013 Commitments [Member] Subsequent Event [Member]	Jun. 30, 2013 Options [Member]	Jul. 11, 2013 Options [Member] Subsequent Event [Member]	Jul. 11, 2013 Remainder of Year 2014 [Member]	Jul. 11, 2013 Remainder of Year 2014 [Member] Medium Aircraft [Member]	Jul. 11, 2013 Remainder of Year 2014 [Member] Large Aircraft [Member]	Jul. 11, 2013 Remainder of Year 2014 [Member] Medium and Large [Member]	Jul. 11, 2013 Remainder of Year 2014 [Member] SAR Configured [Member]	Jul. 11, 2013 Year 2015 [Member]	Jul. 11, 2013 Year 2015 [Member] Medium Aircraft [Member]	Jul. 11, 2013 Year 2015 [Member] Large Aircraft [Member]	Jul. 11, 2013 Year 2015 [Member] Medium and Large [Member]	Jul. 11, 2013 Year 2015 [Member] SAR Configured [Member]	Jul. 11, 2013 Year 2016 [Member]	Jul. 11, 2013 Year 2016 [Member] Medium Aircraft [Member]	Jul. 11, 2013 Year 2016 [Member] Large Aircraft [Member]	Jul. 11, 2013 Year 2016 [Member] Medium and Large [Member]	Jul. 11, 2013 Year 2016 [Member] SAR Configured [Member]	Jul. 11, 2013 Year 2017 [Member]	Jul. 11, 2013 Year 2017 [Member] Medium Aircraft [Member]	Jul. 11, 2013 Year 2017 [Member] Large Aircraft [Member]	Jul. 11, 2013 Year 2017 [Member] Medium and Large [Member]	Jul. 11, 2013 Year 2017 [Member] SAR Configured [Member]	Jul. 11, 2013 Year 2018 and Thereafter [Member]	Jul. 11, 2013 Year 2018 and Thereafter [Member] Medium Aircraft [Member]	Jul. 11, 2013 Year 2018 and Thereafter [Member] Large Aircraft [Member]	Jul. 11, 2013 Year 2018 and Thereafter [Member] Medium and Large [Member]	Jul. 11, 2013 Year 2018 and Thereafter [Member] SAR Configured [Member]	Jun. 30, 2013 Fiscal Year One And Two [Member]	Jun. 30, 2013 Fiscal Years Three To Five [Member]	Jun. 30, 2013 Fiscal Year Six And Thereafter [Member]
Commitments And Contingencies [Line Items]
Lease term of the aircraft	The aircraft leases range from base terms of 60 to 84 months with renewal options of up to 108 months in some cases, include purchase options upon expiration and some include early purchase options.
Aircraft Purchase Commitments - Total			$ 1,033,655,000			$ 596,756,000	$ 436,899,000	$ 209,300,000											$ 469,534,000			$ 318,197,000	$ 151,337,000	$ 349,939,000			$ 177,456,000	$ 172,483,000	$ 200,411,000			$ 87,332,000	$ 113,079,000	$ 13,771,000			$ 13,771,000	$ 0	$ 0			$ 0	$ 0
Monthly Rent payment	5,232,000																																											224,000	3,523,000	1,485,000
Number of leased aircraft	36																																											3	17	16
Operating leases rental expense	23,100,000	16,300,000							18,100,000	11,200,000
Collective Bargaining Agreements and/or Unions	55.00%
Employee Agreement Escalation Rate	12%
Work force reductions costs		2,200,000
Officer Compensation Expense		2,000,000
Possible litigation damages from early termination of agreement	The claimants allege that an agreement between the parties was terminated without justification and seek damages of $16.3 million.
Aircraft Purchase Options - Total			$ 1,413,466,000																$ 114,341,000					$ 392,553,000					$ 399,476,000					$ 372,541,000					$ 134,555,000
Number of aircraft purchase commitments			58	14	26		18	11			10								20	9	11		0	22	5	7		10	15	0	7		8	1	0	1		0	0	0	0		0
Number of aircraft purchase options			70	26	44						16								1	1	0			17	8	9			21	9	12			20	5	15			11	3	8
Number of signed client contracts	31
Number of contingent aircraft orders															22		13
Analysis Of Aircraft Orders And Options [Line Items]
Beginning of quarter															45		70
Aircraft delivered															(5)	0	0	0
Aircraft ordered															7	11	0	0
End of quarter															47	58	70	70
Number of aircraft suspend operations	16											12	1	3