Commitments and contingencies (Details) |
3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|
|
Apr. 09, 2018
USD ($)
|
Jun. 30, 2018
USD ($)
shares
|
Jun. 30, 2018
USD ($)
shares
|
Mar. 26, 2018
USD ($)
|
Feb. 27, 2018
USD ($)
ft²
|
Dec. 21, 2017
USD ($)
shares
|
Dec. 19, 2017
USD ($)
$ / shares
|
|
| Operating Leased Assets [Line Items] | |||||||
| Warrants to purchase common stock | shares | 13,009 | 13,009 | |||||
| Contingency in Other expenses | $ 1,020,000 | $ 1,357,000 | |||||
| Amount paid to consultant | $ 4,000,000 | $ 4,000,000 | |||||
| Monthly base rent | $ 7,000 | ||||||
| Kairos Global Technology, Inc [Member] | |||||||
| Operating Leased Assets [Line Items] | |||||||
| Area of lease | ft² | 107,600 | ||||||
| Base rent per month | $ 665,760 | $ 223,800 | |||||
| Registration Rights Agreement [Member] | |||||||
| Operating Leased Assets [Line Items] | |||||||
| Subscriptions amount | $ 37,037,528 | $ 37,000,000 | |||||
| Subscriptions amount additional unit | $ 37,528 | ||||||
| Per unit price | $ / shares | $ 22.50 | ||||||
| Warrants to purchase common stock | shares | 1,646,113 |
| X | ||||||||||
- Definition Amount paid. No definition available.
|
| X | ||||||||||
- Definition Base rent per month. No definition available.
|
| X | ||||||||||
- Definition Subscriptions amount additional unit. No definition available.
|
| X | ||||||||||
- Definition Value of capital units or capital shares. This element is relevant to issuers of face-amount certificates and registered investment companies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Area of land subject to a ground lease. No definition available.
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Definition This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of loss reported during the period pertaining to product liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|