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Business and Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2014
Accounting Policies [Abstract]  
Business - Summary of Marketable Securities
(in thousands)     March  31,     2014  December 31,     2013
  Marketable equity securities at fair value $4,210  $3,973 
  Cost 1,905     1,954 
  Accumulated other comprehensive income for
    unrealized holding gains		 2,305  2,019 
  Deferred taxes on accumulated other comprehensive
    income for unrealized holding gains		 (802) (688)

Valuation allowance on deferred taxes on unrealized holding losses

included in other comprehensive loss

 (857) (871)
Accumulated other comprehensive income $646  $460 
Business - Changes in Marketable Securities
(in thousands) Three months ended
March 31,
  2014 2013
Gross cash proceeds $350  $   -   
Cost 50   -   
Gross gain on sale included in earnings during the period 300   -   
Deferred taxes on gross gain on sale included in earnings (102)  -   
Valuation allowance on deferred taxes on gross gain on sale included in earnings 102   -   
Reclassification adjustment to unrealized gain in other
   comprehensive income for net gains included in earnings		 (300) -   
Gross unrealized holding gain (loss) arising during the period
   included in other comprehensive loss		 586  (1,410)
Deferred taxes on unrealized holding (loss) gain included in
   other comprehensive loss		 (204)  526 

Valuation allowance on deferred taxes on unrealized holding losses

included in other comprehensive loss

 104   -   
Net unrealized holding (loss) gain 486  (884)
Other comprehensive income (loss) from marketable equity securities $186  $(884)