Segment Reporting Revenue and Property and Equipment by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017
Net revenue	$ 72,483	$ 63,183	$ 141,581	$ 123,224
Depreciation and amortization expense	3,631	2,577	7,358	5,143
Net income (loss)	(546)	27	(2,715)	(501)
Intersegment revenues eliminated in consolidation	4,400	1,500	6,900	2,600
Total assets	357,843		357,843		$ 333,855
Property and equipments, net	29,600		29,600		24,061
Americas
Net revenue	65,121	56,635	127,526	110,033
Depreciation and amortization expense	2,336	1,618	4,869	3,276
Net income (loss)	970	2,044	1,379	3,510
Total assets	308,986		308,986		284,011
Property and equipments, net	22,608		22,608		19,480
Europe
Net revenue	7,362	6,548	14,055	13,191
Depreciation and amortization expense	1,295	959	2,489	1,867
Net income (loss)	(1,516)	$ (2,017)	(4,094)	$ (4,011)
Total assets	48,857		48,857		49,844
Property and equipments, net	$ 6,992		$ 6,992		$ 4,581