STOCKHOLDERS' EQUITY: (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Number of Options, Outstanding at December 31, 2012	4,630,000
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, 2013	4,630,000
Number of Options, Vested and expected to vest at March 31, 2013	4,612,000
Number of Options, Unvested at March 31, 2013	184,000
Number of Options, Exercisable at March31, 2013	4,446,000
Weighted-Average Exercise Price, Outstanding at December 31, 2012	$ 8.17
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, 2013	$ 8.17
Weighted-Average Exercise Price, Vested and expected to vest at March 31, 2013	$ 8.20
Weighted-Average Exercise Price, Unvested at March 31, 2013	$ 1.02
Weighted-Average Exercise Price, Exercisable at March31, 2013	$ 8.47
Weighted-Average Remaining Contractual Term, Balance as of March 31, 2013 (in years)	3 years 6 months 11 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest at March 31, 2013 (in years)	3 years 2 months 23 days
Weighted-Average Remaining Contractual Term, Unvested at March 31, 2013 (in years)	9 years
Weighted-Average Remaining Contractual Term, Exercisable at March31, 2013 (in years)	3 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding at December 31, 2012	$ 0
Aggregate Intrinsic Value, Balance as of March 31, 2013	715,418
Aggregate Intrinsic Value, Vested and expected to vest at March 31, 2013	704,023
Aggregate Intrinsic Value, Unvested at March 31, 2013	129,516
Aggregate Intrinsic Value, Exercisable at March31, 2013	$ 585,902