GENERAL (Schedule of Earnings Per Share) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]
Earnings from continuing operations	$ 1,522	$ 2,835	$ 10,197	$ 26,096
Less dividend equivalents attributable to restricted stock units outstanding	(27)	(43)	(54)	(207)
Earnings from continuing operations attributable to common shareholders used for basic earnings per share calculation	1,495	2,792	10,143	25,889
Earnings (loss) from discontinued operations	(4,987)	2,515	(3,551)	5,842
Net earnings (loss) attributable to common shareholders used for basic earnings per share calculation	$ (3,492)	$ 5,307	$ 6,592	$ 31,731
Weighted-average number of common shares outstanding:
Basic	33,396	33,394	33,395	33,097
Stock options		1		1
Diluted	33,396	33,395	33,395	33,098
Restricted stock units outstanding at the end of the period	216	171	216	171