Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) $ in Thousands	9 Months Ended
	Dec. 31, 2014 USD ($)
Prior Period Adjustments Restatement [Line Items]
Increase(decrease) in outstanding payables related to purchases of property and equipment	$ 7,291	[1]
Increase(decrease) in net realized gains on short-term investments	5,198	[1]
Increase in net cash provided by operating activities	(20,279)	[1]
Decrease in net cash provided by investing activities	1,461	[1]
Previously Reported [Member]
Prior Period Adjustments Restatement [Line Items]
Increase(decrease) in outstanding payables related to purchases of property and equipment	(300)
Increase(decrease) in net realized gains on short-term investments	(100)
Restatement Adjustment [Member]
Prior Period Adjustments Restatement [Line Items]
Increase(decrease) in outstanding payables related to purchases of property and equipment	300
Increase(decrease) in net realized gains on short-term investments	100
Increase in net cash provided by operating activities	400
Decrease in net cash provided by investing activities	$ 400

[1] The Statement of Cash Flows for the nine months ended December 31, 2014 reflects immaterial revisions to correct $0.3 million of outstanding payables related to purchases of property and equipment previously included in net cash used for investing activities to net cash used for operating activities and $0.1 million of net realized gains on short-term investments previously classified as net cash used for operating activities to net cash provided by investing activities. As a result, net cash used for operating activities increased by $0.4 million and net cash used for investing activities decreased by the corresponding amount.