Net Loss Per Common Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Options outstanding for the purchase of common stock	103,465	67,063	103,465	67,063
Shares included in computation of earnings per share	58,296	10,327
Preferred stock convertible into common stock at rate of shares of common stock	64,000	64,000	64,000	64,000
Shares attributable to conversion of preferred stock included in calculation of diluted earnings per share	64,000	64,000
Stock Options [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from computation of diluted earnings per share			0	0
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from computation of diluted earnings per share			64,000	64,000