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Retirement benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Pension Expense	$ 450,732	$ 408,128
Cayman Island [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	5.00%
Maximum annual contribution amount	$ 104,400
FLORIDA
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	6.00%
California [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer Matching Contribution, Percent of Employees' Gross Pay	2.00%
California [Member] | Defined Contribution Plan, Employer Matching Contribution, 25 Percent of Match [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer Matching Contribution, Percent of Match	25.00%
California [Member] | Defined Contribution Plan, Employer Matching Contribution, 25 Percent of Match [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer Matching Contribution, Percent of Match	10.00%

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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.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Percentage employer matches of the employee's percentage contribution matched.

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- Definition

Maximum amount the employee may contribute to a defined contribution plan.

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

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