INVESTMENTS (Investment Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Amortized cost, one year or less	$ 114,231
Amortized cost, over one year and less than two years	28,631
Amortized Cost	142,862
Fair value, one year or less	114,113
Fair value, over one year and less than two years	28,593
Fair Value	$ 142,706