Stockholders' Equity - Additional Information (Detail) (USD $)	9 Months Ended		15 Months Ended	160 Months Ended			3 Months Ended		9 Months Ended	3 Months Ended					9 Months Ended		3 Months Ended	1 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2014 2008 Omnibus Plan	Mar. 31, 2014 Series A warrants	Mar. 31, 2013 Restricted Stock Units (RSUs)	Mar. 31, 2014 Restricted Stock Units (RSUs)	Mar. 31, 2013 Restricted Stock Units (RSUs) Chief Executive Officer	Mar. 31, 2013 Restricted Stock Units (RSUs) Chief Executive Officer Vesting Schedule One	Mar. 31, 2013 Restricted Stock Units (RSUs) Chief Executive Officer Vesting Schedule Two	Mar. 31, 2013 Restricted Stock Units (RSUs) Chief Executive Officer Vesting Schedule Three	Mar. 31, 2014 Minimum	Mar. 31, 2014 Maximum	Mar. 31, 2014 Maximum 2008 Omnibus Plan	Mar. 31, 2014 May 2012 Rights Offering	Oct. 31, 2013 Public offering	Apr. 30, 2013 Underwritten Registered Offering	Dec. 31, 2012 December 2012 Private Placement	Mar. 31, 2014 December 2012 Private Placement
Class of Stock [Line Items]
Stock issued																		4,375,000	2,030,000	9,166,665
Purchase price common stock																		$ 8.00	$ 7.50
Proceeds from offering	$ 32,726,000	$ 25,271,000		$ 159,113,000														$ 32,700,000	$ 14,200,000	$ 27,500,000
Warrants issued																				6,416,665
Proceed from issuance of private placement																				25,300,000
Warrants exercised			2,046,871
Common stock issued upon exercise of warrants			1,496,018
Warrants outstanding							215,721										315,546				4,369,794
Exercise price							6.00										7.14				3.12
Warrants expiration date							2016-11										2017-05				2017-12
Common stock authorized						2,186,000										2,186,000
Options outstanding	1,016,100		1,016,100	1,016,100	635,094
Options exercise price	$ 7.98		$ 7.98	$ 7.98	$ 8.26									$ 2.76	$ 30.30
Outstanding options expiration dates															2015 through 2019
Unrecognized compensation expense related to non-vested stock options	2,760,000		2,760,000	2,760,000
Expected weighted average period for recognition of compensation expense	3 years								2 years 4 months 24 days
RSUs granted										400,000
One third of RSUs vesting date											Aug. 30, 2014	Aug. 30, 2015	Aug. 30, 2016
Number of common stock to be received for each RSUs										1
Fair value of RSUs on the date of grant								3,452,000
RSUs grant date fair value per unit								$ 8.63
Unrecognized compensation expense related to non-vested RSUs									$ 1,823,000