XML 76 R38.htm IDEA: XBRL DOCUMENT v2.4.0.6
Marketable Securities (Held-To-Maturity Securities) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Aggregate cost basis $ 41,477 [1] $ 33,019 [1]
Gross unrealized holding gains 216 5
Gross unrealized holding (losses) (182) (552)
Net unrealized holding gains/(losses) 34 (547)
Aggregate fair value 41,511 [2] 32,472 [2]
Accrued interest on securities 425 325
Current [Member]
    
Aggregate cost basis 12,702 [1] 9,108 [1]
Gross unrealized holding gains 23 5
Gross unrealized holding (losses) (56) (100)
Aggregate fair value 12,669 [2] 9,013 [2]
Non-Current [Member]
    
Aggregate cost basis 28,775 [1] 23,911 [1]
Gross unrealized holding gains 193  
Gross unrealized holding (losses) (126) (452)
Aggregate fair value $ 28,842 [2] $ 23,459 [2]
[1] Including accrued interest in the amount of $325K and $425K as of December 31, 2011 and 2012 respectively.
[2] Fair value is being determined using quoted market prices in active markets (Level 1).