LONG-TERM DEBT: (Details 1) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total Debt	$ 824,446,000	$ 819,490,000
Interest Coverage	1.54
Senior Secured Leverage	3.57
Total Leverage	7.12
Credit Agreement 2011 [Member]
Debt Instrument [Line Items]
Pro Forma Last Twelve Months Covenant EBITDA	94,300,000
Pro Forma Last Twelve Months Interest Expense	61,100,000
Senior Debt	336,400,000
Total Debt	$ 671,400,000
Senior Secured Debt [Member] | Covenant Limit [Member] | Credit Agreement 2011 [Member]
Debt Instrument [Line Items]
Interest Coverage	1.20
Senior Secured Leverage	4.25
Total Leverage	8.25
Senior Secured Debt [Member] | Excess Coverage [Member] | Credit Agreement 2011 [Member]
Debt Instrument [Line Items]
Interest Coverage	0.34
Senior Secured Leverage	0.68
Total Leverage	1.13