Share Capital - Schedule of Shared Based Compensation, Stock Options (Details) - Employee Stock Option - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Stock Incentive Plan [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number outstanding, beginning balance	37,500	75,000	112,500
Weighted average price per share, beginning balance	$ 5.83	$ 5.28	$ 5.70
Number exercisable, beginning balance	37,500	75,000	112,500
Weighted average price per share, exercisable, beginning balance	$ 5.83	$ 5.28	$ 5.70
Weighted average price per share, vested	$ 0.00	$ 0.00	$ 0.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	0	0	0
Number outstanding, granted	0	0	0
Weighted average price per share, granted	$ 0.00	$ 0.00	$ 0.00
Number outstanding, exercised	(37,500)	(37,500)	(37,500)
Weighted average price per share, exercised	$ 5.83	$ 5.97	$ 4.72
Number outstanding, expired and cancelled	0	0	0
Weighted average price per share, expired and cancelled	$ 0.00	$ 0.00	$ 0.00
Number outstanding, ending balance	0	37,500	75,000
Weighted average price per share, ending balance	$ 0.00	$ 5.83	$ 5.28
Number exercisable, ending balance	0	37,500	75,000
Weighted average price per share, exercisable, ending balance	$ 0.00	$ 5.83	$ 5.28
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares	0	0	0