COMMITMENTS AND CONTINGENCIES: (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Percentage Of Provisional Discount On Music Licensing Fee			11.00%	7.00%
Rent Expenses Continuing Operations	$ 10.6	$ 9.5	$ 8.0
Rent Expenses Discontinuing Operations	10.7	9.7	8.1
Standby Letters Of Credit [Member]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	1.0
Music License Agreements [Member]
License Costs Continuing Operations	9.8	12.5	11.4
License Costs Discontinuing Operations	$ 9.9	$ 12.5	$ 11.4