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INVESTMENTS: (Details 1) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Fair Value less than 1 Year | $ 863 | $ 884
Available-for-sale Securities, Unrealized Losses less than 1 Year | (24) | (29)
Available-for-sale Securities, Fair Value greater than 1 Year | 1,719 | 1,477
Available-for-sale Securities, Unrealized Losses greater than 1 Year | (79) | (186)
Available For Sale Securities, Total Unrealized Losses | (103) | (215)
Corporate debt securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Fair Value less than 1 Year | 574 | 119
Available-for-sale Securities, Unrealized Losses less than 1 Year | (2) | (2)
Available-for-sale Securities, Fair Value greater than 1 Year | 0 | 0
Available-for-sale Securities, Unrealized Losses greater than 1 Year | 0 | 0
Available For Sale Securities, Total Unrealized Losses | (2) | (2)
Government sponsored enterprise mortgage-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Fair Value less than 1 Year | 0 |
Available-for-sale Securities, Unrealized Losses less than 1 Year | 0 |
Available-for-sale Securities, Fair Value greater than 1 Year | 0 |
Available-for-sale Securities, Unrealized Losses greater than 1 Year | 0 |
Available For Sale Securities, Total Unrealized Losses | 0 |
Mutual funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Fair Value less than 1 Year | 289 | 765
Available-for-sale Securities, Unrealized Losses less than 1 Year | (22) | (27)
Available-for-sale Securities, Fair Value greater than 1 Year | 1,719 | 1,477
Available-for-sale Securities, Unrealized Losses greater than 1 Year | (79) | (186)
Available For Sale Securities, Total Unrealized Losses | $ (101) | $ (213)

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