ACQUISITIONS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		0 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Jan. 03, 2012 TRX	Mar. 31, 2013 TRX Customer relationships	Jan. 03, 2012 TRX Customer relationships
Acquisitions
Cash paid for acquisition	$ 0	$ 10,294	$ 10,294
Allocation of the purchase price
Current assets			2,702
Property, plant and equipment			2,227
Intangible assets			5,365		5,365
Deferred tax assets			40
Total assets acquired			10,334
Current liabilities			40
Total liabilities assumed			40
Net assets acquired			$ 10,294
Acquired identifiable finite-lived intangible assets
Amortization period				6 years