LEASES - Summary of Selected Financial Data (Detail) (CPD NY and NECG [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
CPD NY and NECG [Member]
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 143,191	$ 136,505	$ 410,182	$ 368,300
Gross profit	10,054	8,201	29,841	26,575
Net income (loss)	1,243	(808)	2,702	900
Current assets	16,227		16,227		9,529
Noncurrent assets	25,323		25,323		21,326
Current liabilities	10,372		10,372		4,800
Noncurrent liabilities	$ 18,878		$ 18,878		$ 21,624