Reconciliation of Weighted Average Shares for Basic and Diluted Earnings Per Share (Detail) - shares		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reconciliation Of Basic Weighted Average Shares To Diluted Weighted Average Shares [Line Items]
Weighted average shares for basic earnings per share		17,254,843	25,463,994	17,241,040	25,452,991
Weighted average shares for diluted earnings per share	[1]	17,540,060	25,463,994	17,515,854	25,684,931
Restricted Stock
Reconciliation Of Basic Weighted Average Shares To Diluted Weighted Average Shares [Line Items]
Non-vested restricted stock and options		176,087		165,011	128,942
Stock Options
Reconciliation Of Basic Weighted Average Shares To Diluted Weighted Average Shares [Line Items]
Non-vested restricted stock and options		109,130		109,803	102,998

[1] For the quarter ended September 30, 2015, "weighted average shares outstanding - basic" was used to calculate "diluted earnings per share" due to a net loss for the period.