Commitments - Newton Lease Base Rent (Details) - Newton Lease	Mar. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Month of Term Under Newton Lease, 1 to 12	$ 8,480
Month of Term Under Newton Lease, 13 to 24	8,710
Month of Term Under Newton Lease, 25 to 36	$ 8,940

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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