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Retirement benefits | 12 Months Ended
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Dec. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | 19. Retirement benefits Retirement benefit plans are offered to all employees in Florida, Cayman Islands and Bahamas. The plans are administered by third party plan providers and are defined contribution plans. The Company matches the contribution of each employee participating in the plans in an amount up to (i) the first 5% of a Cayman Islands or Bahamas employee’s salary; and (ii) 6% of a Florida employee’s salary. The total amount recognized as an expense under the plans during the year ended December 31, 2017, 2016, and 2015 was $384,624, $376,086, and $328,084, respectively.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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