XML 128 R47.htm IDEA: XBRL DOCUMENT v2.4.0.8
Investments - Amortized cost and estimated fair value of investments in available-for-sale securities, by contractual maturity (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Cost  
Mature in one year or less $ 38,062
Mature after one year through three years 22,958
Mature in more than three years 21,838
Total debt securities 82,858
Securities with no contractual maturities 147,236
Total 230,094
Estimated Fair Value  
Mature in one year or less 38,146
Mature after one year through three years 23,095
Mature in more than three years 22,202
Total debt securities 83,443
Securities with no contractual maturities 153,203
Total $ 236,646