OTHER CURRENT AND NONCURRENT ASSETS: (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Other current assets
Prepaid expenses and other	$ 25,714	$ 25,365
Escrow deposit (see Note 3 - Acquisitions	5,880
Note receivable (see Note 4 – Discontinued Operations and Dispositions)	4,000
Assets of non-qualified retirement plan	12,716	12,532
Other current assets	48,310	37,897
Other noncurrent assets
Acquired intangible assets, net	43,884	19,203
Deferred data acquisitions costs	1,116	1,644
Other miscellaneous noncurrent assets	6,443	4,468
Noncurrent assets	$ 51,443	$ 25,315