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Share Based Payments (Schedule of Outstanding Units Activity) (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) EquityInstruments | Dec. 31, 2018 USD ($) EquityInstruments
Deferred Share Units [member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Outstanding, other than options, beginning | 850,067 | 974,179
Granted, other units | 111,804 | 101,612
Paid, other units |  | (225,724)
Outstanding, other than options, ending | 961,871 | 850,067
Outstanding, beginning balance, fair value | $ 3,116,000 | $ 5,094,000
Fair Value, granted, other units | 455,000 | 482,000
Fair Value, Paid in Cash, other units |  | (1,251,000)
Change in fair value, other units | 347,000 | (1,209,000)
Outstanding, ending balance, fair value | $ 3,918,000 | $ 3,116,000
Restricted Share Units |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Granted, other units | EquityInstruments | 633,914 | 422,030
Cash Settled, Restricted Share Units [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Outstanding, other than options, beginning | 659,385 | 980,476
Granted, other units | 139,661 | 87,759
Paid, other units | (406,611) | (405,821)
Forfeited or cancelled, other units |  | (3,029)
Outstanding, other than options, ending | 392,435 | 659,385
Outstanding, beginning balance, fair value | $ 2,057,000 | $ 3,935,000
Fair Value, granted, other units | 506,000 | 414,000
Fair Value, Paid in Cash, other units | (1,466,000) | (1,915,000)
Fair value, forfeited or cancelled, other units |  | (15,000)
Change in fair value, other units | 60,000 | (362,000)
Outstanding, ending balance, fair value | 1,157,000 | $ 2,057,000
Fair value, Current portion | 911,000 |
Fair value, Non-current portion | $ 246,000 |
Equity Settled, Restricted Share Units [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Outstanding, other than options, beginning | 734,631 | 390,751
Granted, other units | 633,914 | 422,030
Paid, other units | (201,633) | (78,150)
Outstanding, other than options, ending | 1,166,912 | 734,631
Performance Share Units |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Granted, other units | EquityInstruments | 422,609 | 1,002,166
Cash Settled, Performance Share Units [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Outstanding, other than options, beginning |  | 553,459
Paid, other units |  | (553,459)
Outstanding, beginning balance, fair value |  | $ 2,691,000
Fair Value, Paid in Cash, other units |  | (2,596,000)
Change in fair value, other units |  | $ 95,000
Equity Settled, Performance Share Units [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Outstanding, other than options, beginning | 1,002,166 |
Granted, other units | 422,609 | 1,002,166
Paid, other units | (150,325) |
Outstanding, other than options, ending | 1,274,450 | 1,002,166

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