SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
Release of valuation allowance related to state NOL carryforwards	$ 5.3		$ 5.3
Income tax provision upon finalization of the 2012 federal income tax return	2.2		2.2
Reduction in liability for unrecognized tax benefit, discontinued operation	6.1	5.1	11.2
Release of valuation allowance related to tax assets of Cunningham VIE				$ 7.7