RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: - Gains, Losses and Other Items (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Gains, Losses and Other Items
Restructuring charges and adjustments	$ 929	$ 2,499	$ 1,208	$ 3,302
Gain on sale of business unit	(629)		(629)
Other		5	35	9
Gains, losses and other items, net	$ 300	$ 2,504	614	$ 3,311
Gains, losses and other items, net
Gains, Losses and Other Items
Restructuring charges and adjustments			$ 1,200