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Deferred Revenue | 12 Months Ended
--- | ---
Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Deferred Revenue | Deferred Revenue
| Years ended
| December 31, 2018 $ |  | December 31, 2017 $
Balance, beginning of the year | 32,046 |  |  | 21,086 |
Deferral of revenue | 37,563 |  |  | 29,111 |
Recognition of deferred revenue | (28,548 | ) |  | (18,151 | )
Balance, end of the year | 41,061 |  |  | 32,046 |
| December 31, 2018 $ |  | December 31, 2017 $
Current portion | 39,180 |  |  | 30,694 |
Long term portion | 1,881 |  |  | 1,352 |
| 41,061 |  |  | 32,046 |
The opening balances of current and long-term deferred revenue were $20,164 and $922, respectively, as of January 1, 2017.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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