SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies - Top Customers (Details)	9 Months Ended	3 Months Ended	12 Months Ended		9 Months Ended	3 Months Ended	12 Months Ended		9 Months Ended	3 Months Ended	12 Months Ended		9 Months Ended	3 Months Ended	12 Months Ended		9 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2012 Successor	Mar. 25, 2012 Predecessor	Dec. 31, 2011 Predecessor	Dec. 31, 2010 Predecessor	Dec. 31, 2012 BG LNG Services Successor	Mar. 25, 2012 BG LNG Services Predecessor	Dec. 31, 2011 BG LNG Services Predecessor	Dec. 31, 2010 BG LNG Services Predecessor	Dec. 31, 2012 ProLiance Successor	Mar. 25, 2012 ProLiance Predecessor	Dec. 31, 2011 ProLiance Predecessor	Dec. 31, 2010 ProLiance Predecessor	Dec. 31, 2012 Other Top 10 Customers Successor	Mar. 25, 2012 Other Top 10 Customers Predecessor	Dec. 31, 2011 Other Top 10 Customers Predecessor	Dec. 31, 2010 Other Top 10 Customers Predecessor	Dec. 31, 2012 Remaining Customers Successor	Mar. 25, 2012 Remaining Customers Predecessor	Dec. 31, 2011 Remaining Customers Predecessor	Dec. 31, 2010 Remaining Customers Predecessor
Entity-Wide Revenue, Major Customer, Percentage	100.00%	100.00%	100.00%	100.00%	31.00%	30.00%	30.00%	29.00%	12.00%	13.00%	13.00%	13.00%	20.00%	24.00%	21.00%	23.00%	37.00%	33.00%	36.00%	35.00%