Annual report pursuant to Section 13 and 15(d)

Other Information - Fair Value Measurements (Details)

v2.4.0.8
Other Information - Fair Value Measurements (Details) (Fair Value, Measurements, Recurring, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Total
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 0 $ 662,681
Quoted prices in active markets for identical assets (Level 1)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 0 $ 662,681