DIVESTITURES: (Details) (USD $)	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended		3 Months Ended
	Mar. 31, 2012	Feb. 29, 2012 AISS business unit	Mar. 31, 2012 AISS business unit	Jul. 31, 2011 MENA subsidiary	Mar. 31, 2012 MENA subsidiary	Mar. 31, 2011 MENA subsidiary	Sep. 30, 2011 MENA subsidiary Gains, losses and other items, net	Sep. 30, 2011 MENA subsidiary Net loss attributable to noncontrolling interest
DIVESTITURES
Cash payment to MENA under the terms of disposal				$ 1,000,000
Loss on disposal of subsidiary					3,400,000			900,000
Loss on disposal							2,500,000
Elimination of accumulated deficit attributable to subsidiary as a result of deconsolidation				900,000
Goodwill						0
Revenue associated with discontinued operations			42,819,000			5,700,000
Sale of discontinued business unit		74,000,000
Earnings from discontinued operations
Earnings from discontinued operations before income taxes			4,907,000
Gain on sale of discontinued operations before income taxes			48,380,000
Income taxes	(19,388,000)		(19,388,000)
Income from discontinued operations, net of tax	$ 33,899,000		$ 33,899,000