SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Segment	Sep. 30, 2015 USD ($)	Mar. 31, 2016 USD ($)
SEGMENT REPORTING [Abstract]
Number of business segments | Segment			2
Segment Reporting Information [Line Items]
Sales of product and services	$ 361,227	$ 324,259	$ 651,408	$ 583,955
Financing revenue	8,722	10,279	15,709	18,625
Fee and other income	1,513	1,748	2,848	3,572
Net sales	371,462	336,286	669,965	606,152
Cost of sales, product and services	288,204	261,208	518,051	468,926
Direct lease costs	1,325	3,157	2,317	6,175
Cost of sales	289,529	264,365	520,368	475,101
Professional and other fees	1,735	1,513	3,521	3,031
Salaries and benefits	42,296	35,740	82,094	70,954
General and administrative expenses	7,576	6,385	14,046	11,956
Depreciation and amortization	1,723	1,200	3,498	2,408
Interest and financing costs	400	422	749	975
Operating expenses	53,730	45,260	103,908	89,324
Operating income	28,203	26,661	45,689	41,727
Selected Financial Data - Statement of Cash Flow [Abstract]
Depreciation and amortization	3,057	4,268	5,832	8,503
Purchases of property, equipment and operating lease equipment	2,279	8,694	3,169	15,618
Selected Financial Data - Balance Sheet [Abstract]
Total assets	680,894	590,487	680,894	590,487	$ 616,680
Operating Segments [Member] | Technology [Member]
Segment Reporting Information [Line Items]
Sales of product and services	361,227	324,259	651,408	583,955
Financing revenue	0	0	0	0
Fee and other income	1,488	1,721	2,764	3,532
Net sales	362,715	325,980	654,172	587,487
Cost of sales, product and services	288,204	261,208	518,051	468,926
Direct lease costs	0	0	0	0
Cost of sales	288,204	261,208	518,051	468,926
Professional and other fees	1,425	1,305	2,922	2,567
Salaries and benefits	40,182	33,476	77,667	66,428
General and administrative expenses	6,695	6,126	12,926	11,451
Depreciation and amortization	1,721	1,196	3,492	2,400
Interest and financing costs	0	22	0	41
Operating expenses	50,023	42,125	97,007	82,887
Operating income	24,488	22,647	39,114	35,674
Selected Financial Data - Statement of Cash Flow [Abstract]
Depreciation and amortization	1,765	1,229	3,553	2,466
Purchases of property, equipment and operating lease equipment	912	576	1,564	1,194
Selected Financial Data - Balance Sheet [Abstract]
Total assets	484,178	379,378	484,178	379,378
Operating Segments [Member] | Financing [Member]
Segment Reporting Information [Line Items]
Sales of product and services	0	0	0	0
Financing revenue	8,722	10,279	15,709	18,625
Fee and other income	25	27	84	40
Net sales	8,747	10,306	15,793	18,665
Cost of sales, product and services	0	0	0	0
Direct lease costs	1,325	3,157	2,317	6,175
Cost of sales	1,325	3,157	2,317	6,175
Professional and other fees	310	208	599	464
Salaries and benefits	2,114	2,264	4,427	4,526
General and administrative expenses	881	259	1,120	505
Depreciation and amortization	2	4	6	8
Interest and financing costs	400	400	749	934
Operating expenses	3,707	3,135	6,901	6,437
Operating income	3,715	4,014	6,575	6,053
Selected Financial Data - Statement of Cash Flow [Abstract]
Depreciation and amortization	1,292	3,039	2,279	6,037
Purchases of property, equipment and operating lease equipment	1,367	8,118	1,605	14,424
Selected Financial Data - Balance Sheet [Abstract]
Total assets	$ 196,716	$ 211,109	$ 196,716	$ 211,109