This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.

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Number of new stock issued during the period.

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Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Consolidated Statement of Stockholders' (Deficit) Equity (USD $) In Thousands, except Share data	Total	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interests [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]
Balance at Apr. 30, 2011	$ 93,987	$ 285,992	$ (192,649)	$ 378		$ 256	$ 10
Balance (in shares) at Apr. 30, 2011						25,589,000	988,000
Net income (loss)	(77,592)us-gaap_ProfitLoss		(77,586)		(6)
Other comprehensive income (loss)	(2,330)			(2,330)
Issuances of Class A common stock	239	235				4
Issuances of Class A common stock, shares						402,000
Stock-based compensation	1,855	1,855
Contributions from noncontrolling interest holders	1,806				1,806
Other	266us-gaap_StockholdersEquityOther	266
Balance at Apr. 30, 2012	18,231	288,348	(270,235)	(1,952)	1,800	260	10
Balance (in shares) at Apr. 30, 2012						25,991,000	988,000
Net income (loss)	(54,463)us-gaap_ProfitLoss		(54,142)		(321)
Other comprehensive income (loss)	1,360			1,360
Issuances of Class A common stock	2,840	2,828				12
Issuances of Class A common stock, shares						1,171,000
Sale of Class A common stock, net	42,184	42,069				115
Sale of Class A common stock, net (in shares)						11,500,000
Stock-based compensation	2,516	2,516
Contributions from noncontrolling interest holders	2,687				2,687
Other	96us-gaap_StockholdersEquityOther	96
Balance at Apr. 30, 2013	15,451	335,857	(324,377)	(592)	4,166	387	10
Balance (in shares) at Apr. 30, 2013						38,662,000	988,000
Net income (loss)	(27,404)us-gaap_ProfitLoss		(23,095)		(4,309)
Other comprehensive income (loss)	631			631
Issuances of Class A common stock	368	364				4
Issuances of Class A common stock, shares						424,000
Stock-based compensation	2,404	2,404
Contributions from noncontrolling interest holders	13				13
Balance at Apr. 30, 2014	(8,537)	338,625	(347,472)	39	(130)	391	10
Balance (in shares) at Apr. 30, 2014						39,086,000	988,000
Net income (loss)	(5,810)us-gaap_ProfitLoss		(6,108)		208
Other comprehensive income (loss)	19			19
Issuances of Class A common stock	429	424				5
Issuances of Class A common stock, shares						501,000
Stock-based compensation	1,639	1,639
Contributions from noncontrolling interest holders	155				155
Other	85us-gaap_StockholdersEquityOther	85
Balance at Dec. 31, 2014	$ (12,020)	$ 340,773	$ (353,490)	$ 58	$ 233	$ 396	$ 10
Balance (in shares) at Dec. 31, 2014						39,587,000	988,000