FAIR VALUE MEASUREMENTS (Recurring) (Details) - Recurring - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current Assets:
Available-for-sale securities	$ 379	$ 327
Total	379	327
Current Liabilities:
Earn-out liability	20,145	4,727
Long-term Liabilities:
Earn-out liability	13,780	6,545
Total	33,925	11,272
Level 1
Current Assets:
Available-for-sale securities	379	327
Total	379	327
Current Liabilities:
Earn-out liability	0	0
Long-term Liabilities:
Earn-out liability	0	0
Total	0	0
Level 2
Current Assets:
Available-for-sale securities	0	0
Total	0	0
Current Liabilities:
Earn-out liability	0	0
Long-term Liabilities:
Earn-out liability	0	0
Total	0	0
Level 3
Current Assets:
Available-for-sale securities	0	0
Total	0	0
Current Liabilities:
Earn-out liability	20,145	4,727
Long-term Liabilities:
Earn-out liability	13,780	6,545
Total	$ 33,925	$ 11,272