RESTRUCTURING CHARGES (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 ROVA I and ROVA II Contracts	Jun. 30, 2014 ROVA I and ROVA II Contracts	Dec. 31, 2013 ROVA I and ROVA II Contracts	Jun. 30, 2014 Canadian Acquisition
Restructuring Cost and Reserve [Line Items]
Remaining Period of Contract							5 years
Restructuring Reserve [Roll Forward]
Beginning balance						$ 5,100,000		$ 0
Restructuring charges	7,543,000	0	7,941,000	0	100,000	500,000		8,000,000
Restructuring payments						500,000		400,000
Ending balance					$ 5,100,000	$ 5,100,000	$ 5,100,000	$ 7,600,000