GOODWILL AND OTHER INTANGIBLE ASSETS (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2017 USD ($) Unit	Jun. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 57,070
Goodwill, Accumulated Amortization / Impairment Loss, Beginning Balance	(8,673)
Goodwill, Net Carrying Amount, Beginning Balance	48,397
Acquisitions	6,925
Foreign currency translations	74
Goodwill, Ending Balance	64,069
Goodwill, Accumulated Amortization / Impairment Loss, Ending Balance	(8,673)
Goodwill, Net Carrying Amount, Ending Balance	$ 55,396
Number of reporting units | Unit	1
Finite-Lived Intangible Assets [Line Items]
Intangibles assets, Gross carrying amount	$ 31,660		$ 27,022
Intangibles Assets, Accumulated amortization / Impairment Loss	(16,113)		(14,863)
Intangible assets, Net Carrying Amount	15,547		12,159
Foreign exchange transactions	100
Total amortization expense for other intangible assets	1,100	$ 1,100
Customer Relationships and Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles assets, Gross carrying amount	27,776		23,373
Intangibles Assets, Accumulated amortization / Impairment Loss	(13,701)		(12,553)
Intangible assets, Net Carrying Amount	14,075		10,820
Increase in intangible assets due to business acquisitions	4,400
Internally Developed Processes [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	2,400
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 1,900
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	8 years
Capitalized Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles assets, Gross carrying amount	$ 3,884		3,649
Intangibles Assets, Accumulated amortization / Impairment Loss	(2,412)		(2,310)
Intangible assets, Net Carrying Amount	$ 1,472		$ 1,339
Capitalized Software Development [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Capitalized Software Development [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	8 years
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years