Stockholders' Equity - Common and Preferred Shares - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Mar. 25, 2015	Mar. 31, 2015	Mar. 25, 2015
Stockholders' Equity - Common and Preferred Shares [Line Items]
Gross proceeds from issuance of common stock and warrants	$ 10,000,000
Net proceeds from issuance of common stock and warrants	9,207,000
Term of warrants	5 years
Exercise Price	$ 1.7125		$ 1.7125
Percentage of warrants owned	4.99%		4.99%
Increase in percentage of warrants owned	9.99%
Weighted average period for recognizing unrecognized compensation cost as expense		2 years 6 months
Unrecognized compensation cost related to stock option awards		$ 560,000
2005 Plan [Member]
Stockholders' Equity - Common and Preferred Shares [Line Items]
Maximum number of shares acquired for the award of options, restricted stock and stock appreciation		833,333
Maximum number of shares granted to any one participant in any fiscal year		200,000
Number of participant		1
Registered Offering [Member]
Stockholders' Equity - Common and Preferred Shares [Line Items]
Share price of common stock and warrants issued	$ 1.7125		$ 1.7125
Number of warrants issued for each unit issued	0.5		0.5
Common stock issued during period	5,839,420
Warrants exercised	2,919,710		2,919,710
Private Placement [Member]
Stockholders' Equity - Common and Preferred Shares [Line Items]
Warrants exercised	0		0
Exercise Price	$ 2.13		$ 2.13
Private Placement [Member] | Registered Offering [Member]
Stockholders' Equity - Common and Preferred Shares [Line Items]
Warrants exercised	233,577		233,577