STOCKHOLDERS' EQUITY: (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding at December 31, 2013	4,300,000
Number of Options, Grants	0
Number of Options, Exercised	0
Number Of Option, Forfeited/cancelled/expired	0
Number of Options, Balance as of March 31, 2014	4,300,000
Number of Options, Vested and expected to vest at March 31, 2014	4,291,000
Number of Options, Unvested at March 31, 2014	75,000
Number of Options, Exercisable at March 31, 2014	4,225,000
Weighted-Average Exercise Price, Outstanding at December 31, 2013	$ 7.46
Weighted-Average Exercise Price, Grants	$ 0
Weighted-Average Exercise Price, Exercised	$ 0
Weighted-Average Exercise Price, Forfeited/cancelled/expired	$ 0
Weighted-Average Exercise Price, Balance as of March 31, 2014	$ 7.46
Weighted-Average Exercise Price, Vested and expected to vest at March 31, 2014	$ 7.47
Weighted-Average Exercise Price, Unvested at March 31, 2014	$ 0.83
Weighted-Average Exercise Price, Exercisable at March 31, 2014	$ 7.58
Weighted-Average Remaining Contractual Term, Outstanding at March 31, 2014 (in years)	2 years 8 months 23 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest at March 31, 2014 (in years)	2 years 8 months 19 days
Weighted-Average Remaining Contractual Term, Unvested at March 31, 2014 (in years)	8 years 2 months 5 days
Weighted-Average Remaining Contractual Term, Exercisable at March 31, 2014 (in years)	2 years 7 months 20 days
Aggregate Intrinsic Value, Outstanding at December 31, 2013	$ 0
Aggregate Intrinsic Value, Balance as of March 31, 2014	7,478,480
Aggregate Intrinsic Value, Vested and expected to vest at March 31, 2014	7,442,599
Aggregate Intrinsic Value, Unvested at March 31, 2014	294,823
Aggregate Intrinsic Value, Exercisable at March 31, 2014	$ 7,184,057