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Stockholders' Deficit (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity:

										Weighted
										Average
						Weighted				Remaining
						Average				Contractual				Aggregate
		Stock Options				Exercise Price				Term (years)				Intrinsic Value
Outstanding, December 31, 2014			1,380			$	7.70
Granted			150			$	7.17
Exercised			(33	)		$	4.85
Forfeited			(200	)		$	12.16
Outstanding, December 31, 2015			1,297			$	7.03				5.5			$	1,156
Exercisable, December 31, 2015			942			$	7.47				4.2			$	928
Expected to vest, December 31, 2015			1,296			$	7.03				5.5			$	1,155

Schedule of Fair Value of Stock Options Weighted Average Assumptions

The weighted average fair value of stock options granted during fiscal year 2015, transition period 2014, fiscal year 2014 and fiscal year 2013 were $5.35, $3.62, $4.22 and $3.03 per option, respectively, which were calculated assuming no expected dividend yield using the following weighted average assumptions:

		Fiscal Year Ended				Eight Months Ended				Fiscal Year Ended April 30,
		December 31, 2015				December 31, 2014				2014				2013
Expected life			7.24 years				7.00 years				6.79 years				6.82 years
Risk-free interest rate			2.02%				2.15%				2.22%				1.14%
Expected volatility			81.31%				82.76%				83.96%				84.40%

Summary of Restricted Stock, Restricted Stock Unit and Performance Stock Unit Activity

The following table summarizes restricted stock, restricted stock unit and performance stock unit activity:

		Restricted Stock,								Weighted Average
		Restricted Stock Units,				Weighted				Remaining
		and Performance Stock				Average				Contractual Term				Aggregate Intrinsic
		Units (1)				Grant Price				(years)				Value
Outstanding, December 31, 2014			1,048			$	4.79
Granted			624			$	4.40
Class A Common Stock Vested			(410	)		$	4.68
Forfeited			(300	)		$	5.09
Outstanding, December 31, 2015			962			$	4.49				1.8			$	1,449
Expected to vest, December 31, 2015			825			$	4.51				1.8			$	1,228

(1) Performance stock units are included at the 100% attainment level. As of December 31, 2015, no performance stock units remain outstanding.

Summary of Grant Activity for Other Stock Awards

The following table summarizes the grant activity for other stock:

		Granted				Weighted Average Grant Date Fair Value				Unissued at December 31, 2015
Fiscal year 2013 grants
Restricted stock units			340			$	5.15				—
Performance stock units			316			$	5.17				—
Restricted stock awards			79			$	4.45				—
Total			735								—
Fiscal year 2014 grants
Restricted stock units			482			$	4.09				135
Restricted stock awards			60			$	5.81				14
Total			542								149
Transition period 2014 grants
Restricted stock units			277			$	5.28				171
Restricted stock awards			93			$	3.78				44
Total			370								215
Fiscal year 2015 grants
Restricted stock units			562			$	4.20				541
Restricted stock awards			62			$	6.25				57
Total			624								598

Accumulated Other Comprehensive Income (Loss)

The changes in the balances of each component of accumulated other comprehensive income (loss) are as follows:

		Marketable Securities				Commodity Hedges				Interest Rate Swaps				Total
Balance as of April 30, 2012		$	4			$	413			$	(2,369	)		$	(1,952	)
Other comprehensive income (loss) before reclassifications			23				(1,653	)			(1,257	)			(2,887	)
Amounts reclassified from accumulated other comprehensive loss			—				621				3,626				4,247
Net current-period other comprehensive income (loss)			23				(1,032	)			2,369				1,360
Balance as of April 30, 2013			27				(619	)			—				(592	)
Other comprehensive income (loss) before reclassifications			12				(36	)			—				(24	)
Amounts reclassified from accumulated other comprehensive loss			—				655				—				655
Net current-period other comprehensive income			12				619				—				631
Balance as of April 30, 2014			39				—				—				39
Other comprehensive income			19				—				—				19
Balance as of December 31, 2014			58				—				—				58
Other comprehensive loss			(51	)			—				—				(51	)
Balance as of December 31, 2015		$	7			$	—			$	—			$	7

Reclassification Out of Accumulated Other Comprehensive Income (Loss)

A summary of reclassifications out of accumulated other comprehensive income (loss) for fiscal year 2015, transition period 2014, fiscal year 2014 and fiscal year 2013 is as follows:

		Fiscal Year				Eight Months
		Ended				Ended				Fiscal Year Ended
		December 31,				December 31,				April 30,
		2015				2014				2014				2013
Details about Accumulated Other Comprehensive Income (Loss) Components		Amount Reclassified Out of Accumulated Other Comprehensive Income (Loss)																Affected Line Item in the Consolidated Statements of Operations
Loss on derivative instruments:
GreenFiber commodity hedges		$	—			$	—			$	(405	)		$	(621	)		Loss from equity method investments
Interest rate contracts			—				—				—				(3,626	)		Loss on derivative instruments
			—				—				(405	)			(4,247	)		Loss from continuing operations before income taxes and discontinued operations
			—				—				(250	)			—			Benefit for income taxes
		$	—			$	—			$	(655	)		$	(4,247	)		Loss from continuing operations before discontinued operations

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