Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Schedule of Restricted Stock Awards (Detail)

v2.4.0.8
Share-Based Compensation - Schedule of Restricted Stock Awards (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Number of Shares, Restricted stock at beginning of period 3,500 10,500
Number of Shares, Restricted stock granted 111,332 111,332
Number of Shares, Restricted stock vested   (7,000)
Number of Shares, Restricted stock forfeited (750) (750)
Number of Shares, Restricted stock at end of period 114,082 114,082
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at beginning of period $ 10.99 $ 10.83
Weighted-Average Grant Date Fair Value Per Share, Restricted stock granted $ 16.43 $ 16.43
Weighted-Average Grant Date Fair Value Per Share, Restricted stock vested   $ 10.75
Weighted-Average Grant Date Fair Value Per Share, Restricted stock forfeited $ 10.80 $ 10.80
Weighted-Average Grant Date Fair Value Per Share, Restricted stock at end of period $ 16.30 $ 16.30