STOCKHOLDERS' EQUITY: (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Number of Options, Outstanding at Beginning of Year	4,811,000	4,999,000	5,365,000
Number of Options, Grants	151,000	182,000	39,000
Number of Options, Exercised	0	0	0
Number Of Option, Forfeited/cancelled/expired	(332,000)	(370,000)	(405,000)
Number of Options, Balance at End of Year	4,630,000	4,811,000	4,999,000
Number of Options, Vested and expected to vest at December 31, 2012	4,612,000
Number of Options, Unvested at December 31, 2012	184,000
Number of Options, Exercisable at December 31, 2012	4,446,000
Weighted-Average Exercise Price, Outstanding at Beginning of Year	$ 8.60	$ 9.40	$ 9.64
Weighted-Average Exercise Price, Grants	$ 0.83	$ 1.38	$ 3.17
Weighted-Average Exercise Price, Exercised	$ 0	$ 0	$ 0
Weighted-Average Exercise Price, Forfeited/cancelled/expired	$ 11.05	$ 16.57	$ 11.57
Weighted-Average Exercise Price, Balance at End of Year	$ 8.17	$ 8.60	$ 9.40
Weighted-Average Exercise Price, Vested and expected to vest at December 31, 2012	$ 8.20
Weighted-Average Exercise Price, Unvested at December 31, 2012	$ 1.02
Weighted-Average Exercise Price, Exercisable at December 31, 2012	$ 8.47
Weighted-Average Remaining Contractual Term, Outstanding at December 31, 2012 (in years)	3 years 9 months 7 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest at December 31, 2012 (in years)	3 years 9 months
Weighted-Average Remaining Contractual Term, Unvested at December 31, 2012 (in years)	9 years 3 months
Weighted-Average Remaining Contractual Term, Exercisable at December 31, 2012 (in years)	3 years 6 months 18 days
Aggregate Intrinsic Value, Outstanding at Beginning of Year	$ 0	$ 0	$ 0
Aggregate Intrinsic Value, Balance at End of Year	0	0	0
Aggregate Intrinsic Value, Vested and expected to vest at December 31, 2012	0
Aggregate Intrinsic Value, Unvested at December 31, 2012	0
Aggregate Intrinsic Value, Exercisable at December 31, 2012	$ 0