Commitments and contingencies (Details) |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Sep. 30, 2017
USD ($)
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2017
USD ($)
Officers
|
Sep. 30, 2016
USD ($)
|
May 31, 2017
USD ($)
|
Feb. 25, 2016
USD ($)
|
|
| Operating Leased Assets [Line Items] | ||||||
| Rent expense | $ 13,000 | |||||
| Sales price of corporate headquarters, land and building to a third party | $ 4,053,000 | |||||
| Proceeds from sale of property plant and equipment | $ 1,799,143 | |||||
| Gain from sale of property plant and equipment | $ 13,062 | $ 1,933,335 | ||||
| BDI [Member] | ||||||
| Operating Leased Assets [Line Items] | ||||||
| Lease expiration date | Mar. 31, 2018 | |||||
| Future minimum operating lease commitments owed in 2017 | $ 294,000 | |||||
| Rent expense | $ 216,000 | |||||
| Prepayment of rent | $ 80,419 | |||||
| Lease deposit | $ 37,000 | |||||
| Employment Contracts [Member] | ||||||
| Operating Leased Assets [Line Items] | ||||||
| Number of officers | Officers | 1 | |||||
| Annual commitment amount | $ 272,000 | $ 272,000 | ||||
| Subsidiary [Member] | ||||||
| Operating Leased Assets [Line Items] | ||||||
| Rent expense | $ 229,000 | |||||
| X | ||||||||||
- Definition Lease deposit. No definition available.
|
| X | ||||||||||
- Definition Number of officers of the entity under employment agreements. Renew of the agreements is automatic in nature and termination can be executed by either party. No definition available.
|
| X | ||||||||||
- Definition Sales price of corporate headquarters, land and building to a third party. No definition available.
|
| X | ||||||||||
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. 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 Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for rent that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|