XML 90 R49.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements (Marketable Debt Securities) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Amortized Cost $ 11,364 $ 21,111 $ 30,912
Gross Unrealized Gains 83 220 434
Gross Unrealized Losses (2) (9) (9)
Estimated Fair Value 11,445 21,322 31,337
Other-than-temporary Impairments 0 0 0
Municipal Bonds — Available for Sale
      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Amortized Cost 11,364 21,111 28,745
Gross Unrealized Gains 83 220 352
Gross Unrealized Losses (2) (9) (9)
Estimated Fair Value 11,445 21,322 29,088
Other-than-temporary Impairments 0 0 0
Municipal Bonds - Other than Available for Sale [Member]
      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Amortized Cost     2,167
Gross Unrealized Gains     82
Gross Unrealized Losses     0
Estimated Fair Value     2,249
Other-than-temporary Impairments     $ 0