Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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Number of share options (or share units) exercised during the current period.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Class A Common Shares	Class B Common Shares	Common stock Class A Common Shares	Common stock Class B Common Shares	Additional paid-in capital	Retained earnings/deficit	Treasury stock
Beginning Balance (in shares) at Apr. 30, 2016				30,972,947	2,487,086
Beginning Balance at Apr. 30, 2016	$ 94,894			$ 3,097	$ 249	$ 114,210	$ 2,897	$ (25,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from stock options exercised (in shares)	754,811			754,811
Proceeds from stock options exercised	$ 5,717			$ 75		5,642
Conversion of Class B shares into Class A shares (in shares)				93,750	(93,750)
Conversion of Class B shares into Class A shares				$ 10	$ (10)
Stock-based compensation	1,428					1,428
Net earnings	14,621						14,621
Dividends declared	(12,910)						(12,910)
Ending Balance (in shares) at Apr. 30, 2017				31,821,508	2,393,336
Ending Balance at Apr. 30, 2017	$ 103,750			$ 3,182	$ 239	121,280	4,608	(25,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from stock options exercised (in shares)	984,310			984,310
Proceeds from stock options exercised	$ 8,609			$ 98		8,511
Conversion of Class B shares into Class A shares (in shares)				335,946	(335,946)
Conversion of Class B shares into Class A shares				$ 34	$ (34)
Stock-based compensation	1,467					1,467
Net earnings	12,053						12,053
Dividends declared	(13,295)						(13,295)
Ending Balance (in shares) at Apr. 30, 2018		33,141,764	2,057,390	33,141,764	2,057,390
Ending Balance at Apr. 30, 2018	$ 112,584			$ 3,314	$ 205	131,258	3,366	(25,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from stock options exercised (in shares)	602,176			602,176
Proceeds from stock options exercised	$ 5,367			$ 61		5,306
Conversion of Class B shares into Class A shares (in shares)				235,799	(235,799)
Conversion of Class B shares into Class A shares				$ 23	$ (23)
Stock-based compensation	1,751					1,751
Net earnings	6,803						6,803
Dividends declared	(13,651)						(13,651)
Ending Balance (in shares) at Apr. 30, 2019		33,979,739	1,821,591	33,979,739	1,821,591
Ending Balance at Apr. 30, 2019	$ 114,607			$ 3,398	$ 182	$ 138,315	$ (1,729)	$ (25,559)