ACQUISITIONS (Detail) - Schedule of pro forma information and net earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Revenue from continuing operations:
As reported	$ 447,436	$ 480,246	$ 482,431	$ 451,032	$ 484,989	$ 455,282	$ 476,129	$ 414,402	$ 1,861,145	$ 1,830,802	$ 1,293,996
Pro forma											1,737,630
Net earnings from continuing operations:
As reported									17,011	(7,431)	9,504
Pro forma											$ 16,885
Diluted earnings per share from continuing operations:
As reported (in Dollars per share)	$ 0.06	$ 0.16	$ 0.04	$ 0.04	$ 0.06	$ 0.08	$ (0.24)	$ (0.03)	$ 0.30	$ (0.13)	$ 0.16
Pro forma (in Dollars per share)											$ 0.28
Average shares - Diluted (in thousands) (in Shares)									57,329	58,919	59,993