Amount of construction costs capitalized during the period.

No definition available.

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The net book value of the asset(s) sold in connection with the sale of the property to another party and lease back to the seller.

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Commitments and Contingencies - Lease Agreement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Aug. 31, 2017
Office space, New Haven, CT
Lessee, Lease, Description [Line Items]
Rent expense	$ 14	$ 9	$ 38	$ 25
New headquarters, New Haven, CT
Lessee, Lease, Description [Line Items]
Rent expense	4	0	36	0
Capitalized construction costs	$ 814	$ 0	$ 1,379	$ 0
Lease agreement, term (in months)					85 months
Renewal term (in months)					120 months
Value of property with option to purchase					$ 2,700