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Investments
12 Months Ended
Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]  
Investments
(3) Investments

Investments on December 31, 2013 and 2012, were comprised of certificates of deposit in the amount of $30, which are pledged as collateral, primarily for our rent in 2013 and 2012, and are restricted as to withdrawal or usage.