SEGMENT INFORMATION: (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Total revenues	$ 214,801	$ 196,895
Gross profit:
Total gross profit	91,982	79,186
Income (loss) from operations:
Income (loss) from operations	8,162	(2,869)
Gains, losses and other items, net	314	807
Depreciation and amortization:
Depreciation and amortization	20,790	21,775
Operating segment
Revenues:
Total revenues	214,801	196,895
Gross profit:
Total gross profit	96,953	84,811
Income (loss) from operations:
Income (loss) from operations	45,532	40,149
Operating segment | Marketing Services
Revenues:
Total revenues	109,715	107,726
Gross profit:
Total gross profit	37,466	36,034
Income (loss) from operations:
Income (loss) from operations	20,145	16,853
Operating segment | Audience Solutions
Revenues:
Total revenues	73,744	68,550
Gross profit:
Total gross profit	41,912	36,824
Income (loss) from operations:
Income (loss) from operations	25,096	24,087
Operating segment | Connectivity
Revenues:
Total revenues	31,342	20,619
Gross profit:
Total gross profit	17,575	11,953
Income (loss) from operations:
Income (loss) from operations	291	(791)
Reconciling items
Gross profit:
Purchased intangible asset amortization	4,077	3,754
Non-cash stock compensation	894	429
Accelerated amortization		1,442
Income (loss) from operations:
Corporate expenses (principally general and administrative)	24,389	25,478
Gains, losses and other items, net	314	807
Purchased intangible asset amortization	4,077	3,754
Non-cash stock compensation	$ 8,590	8,123
Separation and transformation costs		3,414
Accelerated amortization		$ 1,442