GOODWILL (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 80,675	$ 83,773
Tax benefit of excess tax goodwill	(3,098)	(3,098)
Balance at the end of the period	77,577	80,675
Decrease in goodwill balance	3,098	3,098
Acquisitions
Changes in the carrying amount of goodwill
Balance at the beginning of the period	32,517	35,615
Tax benefit of excess tax goodwill	(3,098)	(3,098)
Balance at the end of the period	29,419	32,517
Decrease in goodwill balance	3,098	3,098
Asset Protection
Changes in the carrying amount of goodwill
Balance at the beginning of the period			48,158
Balance at the end of the period	$ 48,158	$ 48,158	$ 48,158