Revenue from Contracts with Customers (Details 1) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($)
Contract Assets - Current
Balance at beginning	$ 1,323	[1]
Additional revenue recognized in excess of billings	1,361	[1]
Less: amounts billed to customers	(333)	[1]
Balance at ending	2,351	[1]
Balance at beginning	14,450	[2]
Payments received prior to revenue being recognized	3,211	[2]
Revenue recognized on beginning balance	(5,034)	[2]
Reclassification to/from noncurrent	(914)	[2]
Balance at ending	11,713	[2]
Balance at beginning	1,254	[3]
Reclassification to/from current	914	[3]
Balance at ending	$ 2,168	[3]

[1] Included within "Prepaid expenses and other current assets" on the consolidated balance sheet.

[2] Included within "Accrued expenses and other current liabilities" on the consolidated balance sheet.

[3] Included within "Other non-current liabilities" on the consolidated balance sheet.