OTHER CURRENT AND NONCURRENT ASSETS: (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Other current assets
Prepaid expenses	$ 25,313	$ 20,684
Assets of non-qualified retirement plan	12,532	14,174
Other miscellaneous assets	52	117
Other current assets	37,897	34,975
Other noncurrent assets
Acquired intangible assets, net	19,203	22,901
Deferred data acquisitions costs	1,644	2,347
Deferred expenses	883	1,976
Prepaid expenses	1,404	1,556
Other miscellaneous noncurrent assets	2,181	1,393
Noncurrent assets	$ 25,315	$ 30,173