Quarterly report pursuant to Section 13 or 15(d)

Preferred Stock - Additional Information (Detail)

Preferred Stock - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended	0 Months Ended
	Dec. 01, 2014	Dec. 31, 2014	Mar. 31, 2015	Jun. 30, 2014
Preferred Stock [Line Items]
Preferred stock authorized to issue			5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, outstanding		0us-gaap_PreferredStockSharesOutstanding
Convertible stock, Conversion of preferred stock	36,300,171us-gaap_ConversionOfStockSharesIssued1	36,300,171us-gaap_ConversionOfStockSharesIssued1
Series C Convertible Preferred Stock
Preferred Stock [Line Items]
Preferred stock authorized to issue			25,000
Preferred stock , Par value			$ 0.001
Preferred stock, cumulative dividends rate			10.00%
Preferred stock, stated value for cumulative dividends			$ 1,000
Series E Redeemable Convertible Preferred Stock
Preferred Stock [Line Items]
Convertible redeemable preferred stock, shares authorized			10,000
Convertible redeemable preferred stock, par value			$ 0.001
Series F Redeemable Convertible Preferred Stock
Preferred Stock [Line Items]
Convertible redeemable preferred stock, shares authorized			10,000
Convertible redeemable preferred stock, par value			$ 0.001
Series G Redeemable Convertible Preferred Stock
Preferred Stock [Line Items]
Preferred stock authorized to issue			18,000
Preferred stock , Par value			$ 0.001
Preferred stock, issued				18,000
Convertible stock, Conversion of preferred stock				5,404
Conversion price			$ 2.30
Series G Redeemable Convertible Preferred Stock \| Dated April 17, 2014
Preferred Stock [Line Items]
Debt exchanged with stock, shares				10,956,000
Debt exchanged with stock, amount				10,956,000
Series G Redeemable Convertible Preferred Stock \| Dated February 25, 2014
Preferred Stock [Line Items]
Debt exchanged with stock, shares				1,640
Debt exchanged with stock, amount				1,640,085
Series F Convertible Preferred Stock
Preferred Stock [Line Items]
Preferred stock, cumulative dividends rate			7.00%
Exchange agreement, shares received				5,000
Series E Convertible Preferred Stock
Preferred Stock [Line Items]
Preferred stock, cumulative dividends rate			5.00%
Series G Convertible Preferred Stock
Preferred Stock [Line Items]
Preferred stock, cumulative dividends rate			9.00%