Shareholder's Equity - Changes in Shareholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2014
Stockholders Equity [Line Items]
Beginning balance			$ 5,218
Preferred stock dividends	(101)	(101)	(202)	(202)
Restricted stock issued for preferred stock dividends			167
Share-based compensation expense			293
Issuance of common stock, net			2,124
Restricted shares and stock options issued for services			165
Warrants issued for services			16
Net loss	(2,088)	(1,577)	(4,199)	(3,451)
Ending balance	3,582		3,582
Preferred Stock [Member]
Stockholders Equity [Line Items]
Beginning balance					69
Ending balance	69		69		69
Common Stock [Member]
Stockholders Equity [Line Items]
Beginning balance			39
Issuance of common stock, net			3
Ending balance	42		42
Additional Paid-in Capital [Member]
Stockholders Equity [Line Items]
Beginning balance			201,492
Restricted stock issued for preferred stock dividends			167
Share-based compensation expense			293
Issuance of common stock, net			2,121
Restricted shares and stock options issued for services			165
Warrants issued for services			16
Ending balance	204,254		204,254
Accumulated Deficit [Member]
Stockholders Equity [Line Items]
Beginning balance			(196,382)
Preferred stock dividends			(202)
Net loss			(4,199)
Ending balance	$ (200,783)		$ (200,783)