RESTRICTED STOCK UNITS, STOCK OPTIONS, AND STOCK APPRECIATION RIGHTS (SARs) - Summary of Restricted Stock Unit Activity (Detail) (Restricted Stock Units (RSUs) [Member], USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Apr. 30, 2013	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Units, Beginning Balance		680,185
Units, Granted	54,730	103,730
Units, Vested		(195,940)
Units, Expired or forfeited		0
Units, Ending Balance		587,975		680,185
Weighted Average Grant Date Fair Value, Period Start (in USD per share)		$ 8.88
Weighted Average Grant Date Fair Value, Granted (in USD per share)		$ 11.70		$ 7.57	$ 14.99
Weighted Average Grant Date Fair Value, Vested (in USD per share)		$ 8.62
Weighted Average Grant Date Fair Value, Expired or forfeited (in USD per share)		$ 0.00
Weighted Average Grant Date Fair Value, Period End (in USD per share)		$ 9.46		$ 8.88
Unamortized Compensation Expense		$ 2,346	[1]
Recognition period of unamortized compensation expense (in years)		3 years
Total grant-date fair value of Restricted Stock Units that vested		$ 1,689		$ 1,336	$ 1,757

[1] Expected to be recognized over the next three years.