Closing of Merger and Financing Transaction - Schedule of Purchase Price (Detail) (USD $) In Thousands, except Share data, unless otherwise specified					0 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Mar. 30, 2014	Dec. 31, 2013	Sep. 03, 2013 Merger Agreement [Member]
Business Acquisition [Line Items]
Common shares outstanding at the date of merger	63,096,816	48,855,255	244,276,923	48,841,417	12,350,000
Closing price per share					$ 7.60
Equity consideration					$ 93,858
Cash consideration					293
Total purchase price					$ 94,151