SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2013 Quarter	Dec. 31, 2012
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Number of quarters in trend basis			6
Estimated percentage amount of wholesaler inventory (in hundredths)	95.00%	98.50%	90.00%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate (in hundredths)			2.32%	2.75%
Fair value of purchase consideration			$ 14,576,000	$ 14,208,000
Non-cash interest expense			368,000
Percentage of likelihood of purchase consideration becoming payable (in hundredths)			100.00%	100.00%
Long-term investments			10,323,000	10,299,000
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents			75,598,000	40,781,000
Total assets			75,598,000	40,781,000
Purchase consideration payable			14,576,000	14,208,000
Total liabilities			14,576,000	14,208,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents			75,598,000	40,781,000
Total assets			75,598,000	40,781,000
Purchase consideration payable			0	0
Total liabilities			0	0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents			0	0
Total assets			0	0
Purchase consideration payable			0	0
Total liabilities			0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents			0	0
Total assets			0	0
Purchase consideration payable			14,576,000	14,208,000
Total liabilities			$ 14,576,000	$ 14,208,000