Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule Of Earnings Per Share [Line Items]
Potentially dilutive securities		190,695
Employee Stock Option [Member]
Schedule Of Earnings Per Share [Line Items]
Potentially dilutive securities	2,168,000
Restricted Stock [Member]
Schedule Of Earnings Per Share [Line Items]
Potentially dilutive securities	13,000
Equity Option [Member]
Schedule Of Earnings Per Share [Line Items]
Potentially dilutive securities	300,000