Annual report pursuant to Section 13 and 15(d)

Investments (Details)

v2.4.1.9
Investments (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Investments, All Other Investments [Abstract]    
Long-term restricted investments $ 5,922us-gaap_RestrictedInvestmentsNoncurrent $ 5,718us-gaap_RestrictedInvestmentsNoncurrent