EMPLOYEE BENEFIT PLANS (Detail) - Plan assets and benefit obligation of the defined benefit plans (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Change in benefit obligation
Actuarial loss	$ 3,360
Change in Plan Assets
Fair value of plan assets at beginning of fiscal year	137,678
Fair value of plan assets at end of fiscal year	160,833
Pension Plans, Defined Benefit [Member]
Change in benefit obligation
Benefit obligation at beginning of fiscal year	212,660	200,208
Benefits earned during the year	238	378
Interest cost	9,191	9,552	1,645
Plan participant contributions	16	25
Benefits paid	(10,359)	(10,607)
Effect of foreign currency	(413)	13
Actuarial loss	21,616	13,091
Benefit obligation at end of fiscal year	232,949	212,660	200,208
Change in Plan Assets
Fair value of plan assets at beginning of fiscal year	137,678	133,733
Actual return on plan assets	25,190	636
Plan participant contributions	16	25
Company contributions	8,638	13,889
Effect of foreign currency	(330)	2
Benefits paid	(10,359)	(10,607)
Fair value of plan assets at end of fiscal year	160,833	137,678	133,733
Projected benefit obligation in excess of plan assets	(72,116)	(74,982)
Amounts recognized in the statement of financial position consist of:
Accrued liabilities	0	0
Other liabilities (long-term)	(72,116)	(74,982)
Total Liabilites	(72,116)	(74,982)
Net actuarial losses	44,656	38,057
Prior service cost	10	16
Deferred taxes	(15,633)	(13,326)
Total Accumulated other comprehensive loss, net of tax	29,033	24,747
Net amount recognized at September 30,	(43,083)	(50,235)
Accumulated benefit obligations	232,574	212,430
Information for plans with accumulated benefit obligations in excess of plan assets:
ABO	232,574	212,430
PBO	232,949	212,660
Fair value of plan assets	160,833	137,678
Supplemental Benefits [Member]
Change in benefit obligation
Benefit obligation at beginning of fiscal year	41,285	43,220
Benefits earned during the year	36	34
Interest cost	1,692	1,759	1,984
Plan participant contributions	0	0
Benefits paid	(3,936)	(3,915)
Effect of foreign currency	0	0
Actuarial loss	2,396	187
Benefit obligation at end of fiscal year	41,473	41,285	43,220
Change in Plan Assets
Fair value of plan assets at beginning of fiscal year	0	0
Actual return on plan assets	0	0
Plan participant contributions	0	0
Company contributions	3,936	3,915
Effect of foreign currency	0	0
Benefits paid	(3,936)	(3,915)
Fair value of plan assets at end of fiscal year	0	0	0
Projected benefit obligation in excess of plan assets	(41,473)	(41,285)
Amounts recognized in the statement of financial position consist of:
Accrued liabilities	(3,897)	(3,918)
Other liabilities (long-term)	(37,576)	(37,367)
Total Liabilites	(41,473)	(41,285)
Net actuarial losses	20,750	19,491
Prior service cost	113	284
Deferred taxes	(7,302)	(6,921)
Total Accumulated other comprehensive loss, net of tax	13,561	12,854
Net amount recognized at September 30,	(27,912)	(28,431)
Accumulated benefit obligations	41,473	40,878
Information for plans with accumulated benefit obligations in excess of plan assets:
ABO	41,473	40,878
PBO	41,473	41,285
Fair value of plan assets	$ 0	$ 0