Future minimum lease payments under finance leases together with the present value of the net minimum lease payments were as follows:
| Minimum payments | Present value of payments | |||||||||||||||
| December 31, 2017 |
December 31, 2016 |
December 31, 2017 |
December 31, 2016 |
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Payable in 1 year |
8,700 | 12,312 | 7,476 | 10,175 | ||||||||||||
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Payable in 2 years |
633 | 280 | 457 | 225 | ||||||||||||
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Payable in 3 years |
584 | 106 | 458 | 74 | ||||||||||||
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Payable in 4 years |
557 | 83 | 481 | 64 | ||||||||||||
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Payable in 5 years and thereafter |
526 | 61 | 482 | 58 | ||||||||||||
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Total minimum lease payment |
11,000 | 12,842 | 9,354 | 10,596 | ||||||||||||
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Less amounts representing finance charges |
(1,646 | ) | (2,246 | ) | 0 | — | ||||||||||
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Present value of finance lease liabilities |
9,354 | 10,596 | 9,354 | 10,596 | ||||||||||||
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Current portion of finance lease liabilities |
7,476 | 10,175 | ||||||||||||||
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Non-current portion of finance lease liabilities |
1,878 | 421 | ||||||||||||||