INVESTMENTS - Other Investments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Schedule of Cost-method Investments [Line Items]
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 13,700,000
Investments	28,077,000	2,060,000
Synthonics
Schedule of Cost-method Investments [Line Items]
Carrying Value	2,170,000	2,060,000
Voting Interest	19.90%	18.20%
Mindjet
Schedule of Cost-method Investments [Line Items]
Carrying Value	17,210,000
Voting Interest	13.60%
Carrying Value	8,697,000
Voting Interest	15.20%
Investments	$ 25,907,000
Voting Interest	28.80%