FINANCIAL INSTRUMENTS (Details 2) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2013
Level 2
|
Dec. 31, 2012
Level 2
|
Dec. 31, 2013
Commercial Paper
|
Dec. 31, 2012
Commercial Paper
|
Dec. 31, 2013
Commercial Paper
Level 2
|
Dec. 31, 2012
Commercial Paper
Level 2
|
Dec. 31, 2013
Corporate Bonds
|
Dec. 31, 2012
Corporate Bonds
|
Dec. 31, 2013
Corporate Bonds
Level 2
|
Dec. 31, 2012
Corporate Bonds
Level 2
|
Dec. 31, 2013
Asset-backed Securities
|
Dec. 31, 2012
Asset-backed Securities
|
Dec. 31, 2013
Asset-backed Securities
Level 2
|
Dec. 31, 2012
Asset-backed Securities
Level 2
|
Dec. 31, 2013
Minimum
|
Dec. 31, 2013
Maximum
|
Dec. 31, 2013
Standard & Poor's, A Rating
|
|
Short-term investments | |||||||||||||||||||
Short-term investments | $ 59,637 | $ 30,924 | $ 59,600 | ||||||||||||||||
Maturity period | 109 days | 363 days | |||||||||||||||||
Amortized Cost | 59,632 | 30,897 | 17,986 | 15,974 | 30,808 | 8,874 | 10,838 | 6,049 | |||||||||||
Gross Unrealized Gains | 13 | 28 | 11 | 23 | 1 | 1 | 1 | 4 | |||||||||||
Gross Unrealized Losses | (8) | (1) | 0 | 0 | (7) | (1) | (1) | 0 | |||||||||||
Fair Value | $ 59,637 | $ 30,924 | $ 17,997 | $ 15,997 | $ 30,802 | $ 8,874 | $ 10,838 | $ 6,053 |