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3. Accounts Receivable, net (Tables)
3 Months Ended
Mar. 31, 2013
Accounts Receivable Net Tables  
Accounts Receivable
    March 31,   December 31,
    2013   2012
    (In thousands)      
Accounts receivable – trade   $ 2,722   $ 2,062
Allowance for doubtful accounts     (116)     (230)
Accounts receivable, net   $ 2,606   $ 1,832