PROPERTY AND EQUIPMENT (Detail Textuals) (USD $) In Thousands, unless otherwise specified	1 Months Ended			0 Months Ended
	Jun. 30, 2005	Dec. 31, 2012	Dec. 31, 2011	May 02, 2005 Sell of Woburn headquarters facility and two parcels of land Parcel	Dec. 31, 2012 Sell of Woburn headquarters facility and two parcels of land
Sale Leaseback Transaction [Line Items]
Number of parcels of land sold				2
Sale of property in exchange for cash payment, net of commissions and closing costs				$ 39,331
Amended lease term (in years)	10 years
Average annual rental rate	3,409
Extention of additional lease term				10 years
Realized gain on the sale		784	1,336	5,477
Remaining amount of the deferred gain					$ 1,336