Annual report pursuant to Section 13 and 15(d)

Investments (Details)

v2.4.0.8
Investments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Investments, All Other Investments [Abstract]      
Long-term restricted investments $ 5,718 $ 3,999  
Purchases of restricted and other investments $ 1,719 $ 26 $ 826