FAIR VALUE DISCLOSURES (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013
Fair Value [Line Items]
Inventories	$ 157,946,000		$ 153,969,000
Assets held for sale	13,627,000		8,290,000
Impairment of Long-Lived Assets Held-for-use	(2,055,000)	(1,889,000)
Total Assets Non Recurring	3,400,000	3,646,000
Total Assets Recurring	4,891,000		4,837,000
Contingent Consideration	35,942,000		35,625,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)	317,000
Total Liabilities Recurring	35,942,000		35,625,000
Fair Value Inputs, Discount Rate	4.00%
Carrying value of total debt	889,773,000		787,269,000
Fair value of total debt	930,282,000		847,767,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value [Line Items]
Inventories	1,100,000
Assets held for sale	2,300,000	3,646,000
Number of Impairment of Long-Lived Assets to be Disposed of	2	7
Cougar [Member]
Fair Value [Line Items]
Potential earn-out payments	40,000,000
FV Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Rabbi Trust investments	4,891,000		4,837,000
FV Other Liabilities And Deferred Credits [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Contingent Consideration	35,942,000		35,625,000
Inventories [Member]
Fair Value [Line Items]
Impairment of Long-Lived Assets Held-for-use	(825,000)
Aircraft [Member]
Fair Value [Line Items]
Impairment of Long-Lived Assets Held-for-use	(1,230,000)
Assets Held-for-sale [Member]
Fair Value [Line Items]
Impairment of Long-Lived Assets Held-for-use		(1,889,000)
Senior Notes Due 2022 [Member]
Fair Value [Line Items]
Carrying value of total debt	450,000,000		450,000,000
Fair value of total debt	461,250,000		484,875,000
Term Loan [Member]
Fair Value [Line Items]
Carrying value of total debt	229,472,000		230,625,000
Fair value of total debt	229,472,000		230,625,000
Convertible Senior Notes [Member]
Fair Value [Line Items]
Carrying value of total debt	107,117,000		106,196,000
Fair value of total debt	136,376,000		131,819,000
Revolving Credit Facility [Member]
Fair Value [Line Items]
Carrying value of total debt	102,000,000		0
Fair value of total debt	102,000,000		0
All Other Debt [Member]
Fair Value [Line Items]
Carrying value of total debt	1,184,000		448,000
Fair value of total debt	1,184,000		448,000
Fair Value, Inputs, Level 1 [Member]
Fair Value [Line Items]
Total Assets Non Recurring	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Total Assets Recurring	4,891,000		4,837,000
Total Liabilities Recurring	0		0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value [Line Items]
Inventories	0
Assets held for sale	0	0
Fair Value, Inputs, Level 1 [Member] | FV Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Rabbi Trust investments	4,891,000		4,837,000
Fair Value, Inputs, Level 1 [Member] | FV Other Liabilities And Deferred Credits [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Contingent Consideration	0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value [Line Items]
Total Assets Non Recurring	3,400,000	3,646,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Total Assets Recurring	0		0
Total Liabilities Recurring	0		0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value [Line Items]
Inventories	1,100,000
Assets held for sale	2,300,000	3,646,000
Fair Value, Inputs, Level 2 [Member] | FV Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Rabbi Trust investments	0		0
Fair Value, Inputs, Level 2 [Member] | FV Other Liabilities And Deferred Credits [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Contingent Consideration	0		0
Fair Value, Inputs, Level 3 [Member]
Fair Value [Line Items]
Total Assets Non Recurring	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Total Assets Recurring	0		0
Total Liabilities Recurring	35,942,000		35,625,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value [Line Items]
Inventories	0
Assets held for sale	0	0
Fair Value, Inputs, Level 3 [Member] | FV Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Rabbi Trust investments	0		0
Fair Value, Inputs, Level 3 [Member] | FV Other Liabilities And Deferred Credits [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value [Line Items]
Contingent Consideration	$ 35,942,000		$ 35,625,000