Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities
Net loss	$ (3,471)	$ (1,900)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	6,926	3,609
Share-based compensation expense	5,181	2,646
Amortization of deferred contract costs	1,386
Other non-cash items	(19)	84
Unrealized currency (gain) loss on foreign denominated transactions	(111)	383
Changes in assets and liabilities:
Accounts receivable	6,079	4,429
Prepaid expenses and other current assets	1,569	436
Deferred contract costs	(3,835)
Other assets	(98)	(6)
Accounts payable	108	1,276
Deferred revenue	2,521	2,244
Accrued expenses and other liabilities	398	(1,563)
Net cash provided by operating activities	16,634	11,638
Investing activities
Purchases of investments		(15,531)
Maturities of investments	17,000	15,500
Purchases of property, equipment and capitalized software	(7,575)	(7,730)
Net cash provided by (used in) investing activities	9,425	(7,761)
Financing activities
Proceeds from issuance of ordinary shares	5,904	3,445
Payments on debt		(533)
Payments on capital lease obligations	(203)
Payments on construction financing lease obligation	(413)
Net cash provided by financing activities	5,288	2,912
Effect of foreign exchange rates on cash	(2,156)	881
Net increase in cash and cash equivalents	29,191	7,670
Cash and cash equivalents at beginning of period	78,339	51,319
Cash and cash equivalents at end of period	107,530	58,989
Supplemental disclosure of cash flow information
Cash paid during the period for interest	517	21
Cash paid during the period for income taxes	37	105
Supplemental disclosure of non-cash investing and financing activities
Unpaid purchases of property, equipment and capitalized software	1,168	2,951
Property and equipment acquired under capital lease		3,109
Construction costs capitalized under financing lease obligations	$ 2,991	$ 9,433