Commitments, Contingencies and Concentrations (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments under non-cancellable operating leases

Future minimum lease payments at December 31, 2017 under non-cancellable operating leases for the next five years are approximately as follows:

	December 31, 2017
2018	$	1,490
2019	1,186
2020	1,025
2021	719
2022	719
	$	5,139

Schedule of dividends payable

On November 7, 2017, the Company's Board of Directors authorized the following quarterly dividend:

	Dividend per Share	Payable on:	Record date:
Common shares	$0.15	January 16, 2018	January 2, 2018