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Marketable Equity Securities (Tables)
 6 Months Ended
Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]  
Marketable Equity Securities and Accumulated Other Comprehensive Income
(in thousands)    June 30,     2016  December 31,     2015
  Marketable equity securities at fair value $1,029  $    202 
  Cost 278     91 
  Accumulated other comprehensive (loss) income for
    unrealized holding gains		 751  111 
  Deferred taxes on accumulated other comprehensive
    income for unrealized holding gains		 (237) -  
Accumulated other comprehensive income $514  $111 
Changes in Marketable Securities
(in thousands) Three months ended
June 30,		 Six months ended
June 30,
  2016 2015 2016 2015
Gross cash proceeds $  40  $ 519  $  40  $ 519 
Cost 10  155  10  155 
Gross gain on sale included in earnings during the period 30  364  30  364 
Deferred taxes on gross gain on sale included in earnings (11) (126) (11) (126)
Valuation allowance on deferred taxes on gross gain on sale included in earnings -   126  -   126 
Reclassification adjustment to unrealized gain in other
   comprehensive income for net gains included in earnings		 (19) (364) (19) (364)
Gross unrealized holding (loss) gain arising during the period
   included in other comprehensive loss		 501  (65) 670  (663)
Deferred taxes on unrealized holding (loss) gain included in
   other comprehensive loss		 (186) 23  (248) 230 
Valuation allowance on deferred taxes on unrealized holding losses included in other comprehensive loss -   (23) -   (230)
Net unrealized holding (loss) gain 315  (65) 422  (663)
Other comprehensive loss from marketable equity securities $(296) $(429) $403  $(1,027)