SHAREHOLDERS' EQUITY - Summary of Changes in Shareholders' Equity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Shareholders Equity [Line Items]
Balance, value			$ 372,169
Net earnings	(3,465)	5,350	6,646	31,938
Dividends			(8,404)
Stock-based employee compensation expense, value			547	480
Balance, value	370,958		370,958
COMMON STOCK [Member]
Shareholders Equity [Line Items]
Balance, value			334
Balance, shares			33,394,395
Stock-based employee compensation expense, shares			1,915
Balance, value	334		334
Balance, shares	33,396,310		33,396,310
PAID-IN CAPITAL [Member]
Shareholders Equity [Line Items]
Balance, value			460,687
Stock-based employee compensation expense, value			547
Balance, value	461,234		461,234
DIVIDENDS PAID IN EXCESS OF EARNINGS [Member]
Shareholders Equity [Line Items]
Balance, value			(88,852)
Net earnings			6,646
Dividends			(8,404)
Balance, value	$ (90,610)		$ (90,610)