FAIR VALUE MEASUREMENTS (Recurring) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT LIABILITIES
Earn-out liability	$ 4,727	$ 0
Recurring | Level 1
CURRENT ASSETS
Available-for-sale securities	327	3,537
Total	327	3,537
CURRENT LIABILITIES
Earn-out liability	0	0
LONG-TERM LIABILITIES
Earn-out liability	0	0
Total	0	0
Recurring | 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
Recurring | Level 3
CURRENT ASSETS
Available-for-sale securities	0	0
Total	0	0
CURRENT LIABILITIES
Earn-out liability	4,727	0
LONG-TERM LIABILITIES
Earn-out liability	6,545	3,841
Total	11,272	3,841
Fair Value | Recurring
CURRENT ASSETS
Available-for-sale securities	327	3,537
Total	327	3,537
CURRENT LIABILITIES
Earn-out liability	4,727	0
LONG-TERM LIABILITIES
Earn-out liability	6,545	3,841
Total	$ 11,272	$ 3,841