Note 21 - Income Taxes (Tables)

12 Months Ended

Mar. 31, 2018

Statement Line Items [Line Items]

Disclosure of the detailed information of income tax [text block]

	2018			2017
Current tax expense	$	2,555		$	27,123
Deferred tax expense (benefit)
Origination and reversal of temporary differences	$	129,177		$	152,945
Benefit arising from previously unrecognized tax loss or temporary difference		(111,058	)		(136,837	)
Deferred tax expense		18,119			16,108
Provision for income taxes	$	20,674		$	43,231

Disclosure of income tax reconciliation [text block]

	2018			2017
Income before income taxes	$	539,248		$	514,114
Combined statutory Canadian federal and provincial income tax rate		26.50	%		26.50	%
Income tax expense based on statutory rate	$	142,901		$	136,240
Increase (decrease) in income taxes resulting from:
Benefit of mark-to-market loss and other temporary differences not recognized	$	(111,058	)	$	(136,837	)
Variance between combined Canadian tax rate and the tax rate applicable to foreign earnings		1,000			40,396
Other permanent items		(12,169	)		3,432
Total income tax expense	$	20,674		$	43,231

Disclosure of deferred taxes [text block]

	2018			2017
Mark-to-market losses on derivative instruments	$	17,580		$	28,667
Tax losses and excess of tax basis over book basis		78,825			9,893
Total deferred tax asset		96,405			38,560
Offset of deferred taxes		(93,873	)		(17,292	)
Net deferred tax asset	$	2,532		$	21,268
Partnership income deferred for tax purposes	$	(6,249	)	$	(8,281	)
Mark-to-market gains on derivative instruments		(54,158	)		(391	)
Book to tax differences on other assets		(30,480	)		(4,476	)
Convertible debentures		(2,986	)		(4,144	)
Total deferred tax liability		(93,873	)		(17,292	)
Offset of deferred taxes		93,873			17,292

Disclosure of income tax, deferred tax movements [text block]

	Balance April 1, 2017			Recognized in profit or loss			Recognized in OCI			Balance March 31, 2018
Partnership income deferred for tax	$	(8,281	)	$	2,032		$	-		$	(6,249	)
Book to tax differences on other assets		4,269			51,864			(7,788	)		48,345
Mark-to-market (gains) losses on derivative instruments		29,424			(66,002	)		-			(36,578	)
Convertible debentures		(4,144	)		1,158			-			(2,986	)
	$	21,268		$	(10,948	)	$	(7,788	)	$	2,532

	Balance April 1, 2016			Recognized in profit or loss			Recognized in OCI			Balance March 31, 2017
Partnership income deferred for tax	$	(22,306	)	$	14,025		$	-		$	(8,281	)
Book to tax differences - customer contracts		(5,139	)		5,139			-			-
Book to tax differences on other assets		19,181			(11,557	)		(2,207	)		5,417
Mark-to-market (gains) losses on derivative instruments		50,481			(22,205	)		-			28,276
Convertible debentures		(2,634	)		(1,510	)		-			(4,144	)
	$	39,583		$	(16,108	)	$	(2,207	)	$	21,268

Disclosure of temporary difference, unused tax losses and unused tax credits [text block]

	2018		2017
Losses available for carryforward	$	-	$	55,745
Mark-to-market on losses on derivative instruments		-		86,767
Excess of tax over book basis		15,824		14,718
Alternative minimum tax credit carryforward		-		2,068

Disclosure of losses available for carryforward [text block]

	2018
2029	$	-
2030		-
2031 and thereafter		138,372
Total	$	138,372