COMMITMENTS AND CONTINGENCIES (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2011
future minimum payments due [Line Items]
Large PBM Services customer late payment	$ 6,800,000			$ 6,800,000
Operating Leases, Future Minimum Payments Due, Current	3,060,000			3,060,000
Capital Leases, Future Minimum Payments Due, Current	1,160,000			1,160,000
future minimum payments due, current	4,220,000			4,220,000
Operating Leases, Future Minimum Payments, Due in Two Years	4,620,000			4,620,000
Capital Leases, Future Minimum Payments Due in Two Years	1,038,000			1,038,000
future minimum payments due in two years	5,658,000			5,658,000
Operating Leases, Future Minimum Payments, Due in Three Years	3,307,000			3,307,000
Capital Leases, Future Minimum Payments Due in Three Years	198,000			198,000
future minimum payments due in three years	3,505,000			3,505,000
Operating Leases, Future Minimum Payments, Due in Four Years	2,686,000			2,686,000
Capital Leases, Future Minimum Payments Due in Four Years	165,000			165,000
future minimum payments due in four years	2,851,000			2,851,000
Operating Leases, Future Minimum Payments, Due in Five Years	2,188,000			2,188,000
Capital Leases, Future Minimum Payments Due in Five Years	3,000			3,000
future minimum payments due in five years	2,191,000			2,191,000
Operating Leases, Future Minimum Payments, Due Thereafter	3,770,000			3,770,000
Capital Leases, Future Minimum Payments Due Thereafter	0			0
future minimum leases due thereafter	3,770,000			3,770,000
Operating Leases, Future Minimum Payments Due	19,631,000			19,631,000
Capital Leases, Future Minimum Payments Due	2,564,000			2,564,000
Operating Leases, Rent Expense	1,400,000	1,400,000		2,900,000	2,800,000
Long-term Purchase Commitment, Amount			13,500,000
future minimum payments due	$ 22,195,000			$ 22,195,000
Minimum [Member]
future minimum payments due [Line Items]
capital lease interest rate	0.00%			0.00%
Maximum [Member]
future minimum payments due [Line Items]
capital lease interest rate	0.00%			0.00%