Quarterly report pursuant to Section 13 or 15(d)

Common Stock Transactions - Additional Information (Detail)

Common Stock Transactions - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	1 Months Ended	0 Months Ended		12 Months Ended	3 Months Ended	0 Months Ended
	Dec. 01, 2014	Dec. 31, 2014	Apr. 21, 2014	May 11, 2015	Dec. 31, 2014	Mar. 31, 2015	Sep. 09, 2005
Schedule of Capitalization, Equity [Line Items]
Common stock, shares outstanding		129,714,000us-gaap_CommonStockSharesOutstanding			129,714,000us-gaap_CommonStockSharesOutstanding	129,714,000us-gaap_CommonStockSharesOutstanding
Common stock, shares issued	8,000,000
Offering price of common stock	$ 1.25us-gaap_SharePrice
Proceeds from sale of common stock, net	$ 8.6
Convertible stock, Conversion of convertible securities	36,300,171us-gaap_ConversionOfStockSharesIssued1	36,300,171us-gaap_ConversionOfStockSharesIssued1
Preferred stock, shares outstanding		0us-gaap_PreferredStockSharesOutstanding			0us-gaap_PreferredStockSharesOutstanding
Common stock, authorized		150,000,000us-gaap_CommonStockSharesAuthorized			150,000,000us-gaap_CommonStockSharesAuthorized	150,000,000us-gaap_CommonStockSharesAuthorized
Restricted Stock
Schedule of Capitalization, Equity [Line Items]
Number of shares authorized for grant			300,000
Stock options vesting period			3 years
Subsequent Event \| Minimum
Schedule of Capitalization, Equity [Line Items]
Reverse stock split				4
Subsequent Event \| Maximum
Schedule of Capitalization, Equity [Line Items]
Reverse stock split				7
Common Stock
Schedule of Capitalization, Equity [Line Items]
Common stock, shares outstanding						135,000,000
Common stock, shares issued					8,000,000
After vote on amendment to the Certificate of Incorporation \| Subsequent Event
Schedule of Capitalization, Equity [Line Items]
Common stock, authorized				200,000,000
RVL One Limited Liability Company
Schedule of Capitalization, Equity [Line Items]
Common stock, shares outstanding						83,000,000
Common stock share outstanding owned						0.61%
Kingstone Warrants
Schedule of Capitalization, Equity [Line Items]
Warrants expiration period							10 years
Warrants issued							289,187
Warrants exercise price							$ 4.30