Redeemable Preferred Stock (Detail) - USD ($)			1 Months Ended	12 Months Ended
	Apr. 02, 2014	Apr. 02, 2012	Apr. 04, 2016	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Feb. 16, 2016	May. 02, 2013
Class of Stock [Line Items]
Conversion of Stock, Shares Converted	975,848
Liquidation preference per share of preferred stock				$ 50.00
Conversion price, per share							$ 20.495
Number of shares of Class A common stock converted for each share of Preferred Stock				2.80			2.44
LOSS ON MODIFICATION OF PREFERRED STOCK				$ 162,000	$ 0	$ 0
Aggregate liquidation preference				43,316,000	$ 46,450,000
Authorized share repurchase amount								$ 500,000.0
Shares repurchased, average cost per share					$ 12.38
Gain on extinguishment of stock					$ 300,000
Stock based compensation expense				$ 4,904,000	$ 2,813,000	$ 4,884,000
Preferred Stock, shares purchased and retired	400,000
Preferred Stock outstanding				866,319	1,337,641
Class A Common Stock
Class of Stock [Line Items]
Conversion of Stock, Shares Converted				152,919		153,220
Series A preferred stock
Class of Stock [Line Items]
Conversion of Stock, Shares Converted				(62,672)
Shares repurchased				8,650
2012 Retention Plan
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				975,848
Contribution of preferred stock to trust		400,000
Distribution period		2 years
Stock based compensation expense				$ 400,000	$ 2,200,000
Voting And Transfer Restriction Agreement
Class of Stock [Line Items]
Number of shares of Class A common stock converted for each share of Preferred Stock					2.44
Number of shares Entity have the ability to direct vote					400,000
Right to exchange, number of convertible preferred stock					400,000
Subsequent Event [Member]
Class of Stock [Line Items]
Number of shares of Class A common stock converted for each share of Preferred Stock			2.80
Subsequent Event [Member] | Class A Common Stock
Class of Stock [Line Items]
Conversion of Stock, Shares Converted			2,425,692
Subsequent Event [Member] | Series A preferred stock
Class of Stock [Line Items]
Conversion of Stock, Shares Converted			866,319