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Income taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of differences between tax provision and Federal and Provincial statutory income taxes

The reasons for the differences are as follows:

Year ended December 31,		2018				2017
Income before income taxes		$	21,417			$	6,468
Tax rate		27.00		%		27.00		%
Expected expense		$	5,783			$	1,746
(Decrease) increase related to:
Income tax adjustments and reassessments		—				30
Non taxable portion of capital gains		(60		)		(672		)
Stock-based compensation		26				88
Other		347				12
Deferred income tax expense		$	6,096			$	1,204

Schedule of deferred tax assets and liabilities

The deferred tax assets and liabilities are summarized below:

		December 31, 2018				December 31, 2017
Deferred tax assets:
Non-capital and net capital loss carryforwards		$	24,478			$	18,619
Deferred financing costs		—				52
Contract liabilities		572				222
Capital lease obligations		23,207				17,961
Stock-based compensation		3,545				2,985
Other		2,538				2,357
Subtotal		$	54,340			$	42,196
Less: valuation allowance		(1,035		)		(1,035		)
		$	53,305			$	41,161
Deferred tax liabilities:
Contract assets		$	3,711			$	5,231
Assets held for sale		116				1,523
Accounts receivable – holdbacks		96				72
Property, plant and equipment		84,811				61,953
Deferred financing costs		86				—
		$	88,820			$	68,779
Net deferred income tax liability		$	35,515			$	27,618

Classified as:

		December 31, 2018				December 31, 2017
Deferred tax asset		$	9,272			$	10,539
Deferred tax liability		(44,787		)		(38,157		)
		$	(35,515	)		$	(27,618	)

Schedule of non-capital losses for income tax purposes

At December 31, 2018, the Company has a deferred tax asset of $23,443 resulting from non-capital loss carryforwards of $86,826, which expire as follows:

		December 31, 2018
2025		$	2
2026		151
2027		128
2031		605
2032		6,409
2033		5,893
2034		5,200
2036		2,207
2037		17,922
2038		48,309
		$	86,826

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- References

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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Tabular disclosure of pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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