XML 34 R46.htm IDEA: XBRL DOCUMENT v2.4.0.8
Trade Accounts Receivable, Net (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Accounts Notes And Loans Receivable [Line Items]    
Trade accounts receivable $ 4,340 $ 3,803
Sales returns and allowances (172) (161)
Trade and other accounts receivable, gross 4,168 3,642
Allowance for uncollectible accounts (35) (35)
Trade accounts receivable, net $ 4,133 $ 3,607