Summary of Significant Accounting Policies - Concentration Risk (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2015 customer supplier	Dec. 31, 2014 customer supplier	Dec. 31, 2015 customer supplier	Dec. 31, 2014 customer supplier	Mar. 31, 2015 customer
Cost of Sales | Supplier Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage		16.00%	10.00%	9.00%
Concentration risk, percent attributable to supplier one	18.10%
Concentration risk, percent attributable to supplier two	12.60%
Concentration risk, number of entities involved in risk calculation | supplier	2	1	0	1
Sales Revenue, Services, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	21.00%	10.00%	12.00%
Concentration risk, number of entities involved in risk calculation	0	1	0	1
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage			10.00%		10.00%
Concentration risk, number of entities involved in risk calculation			0		0