Stock-Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		9 Months Ended
	May 02, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	May 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under Omnibus Incentive Plan						1,000,000
Stock options vesting period, years	3 years
Stock options exercise price	$ 17.16
Stock options fair value	$ 5.82
Expected life of options, years	6 years
Risk-free interest rate	1.26%
Expected dividend yield	4.20%
Expected forfeiture rate	5.00%
Expected volatility rate	52.68%
Stock-based compensation expense for non-qualified stock options to selected employees	$ 961
Requisite service period, years	3 years
Fair market value of fully vested shares as of the grant date	25
Shares of common stock issued to non-employee directors	11,656
Stock-based compensation expense		341	296	845	961
Income tax benefit from stock-based compensation expense		$ 120	$ 103	$ 296	$ 336
Non Qualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted to selected employees	173,750
Stock options life, years	10 years