INVESTMENTS: (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$ 3,026	$ 2,675
Gross Unrealized Losses	(132)	(215)
Gross Unrealized Gains	17	2
Fair Value	2,911us-gaap_AvailableForSaleSecurities	2,462us-gaap_AvailableForSaleSecurities
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	789	147
Gross Unrealized Losses	(1)	(2)
Gross Unrealized Gains	17	2
Fair Value	805	147
Government sponsored enterprise mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	102
Gross Unrealized Losses	0
Gross Unrealized Gains	0
Fair Value	102
Mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	2,135	2,528
Gross Unrealized Losses	(131)	(213)
Gross Unrealized Gains	0	0
Fair Value	$ 2,004	$ 2,315

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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-Name Accounting Standards Codification

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