Annual report pursuant to Section 13 and 15(d)

Schedule II--Valuation and Qualifying Accounts (Details)

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Schedule II--Valuation and Qualifying Accounts (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowances for accounts receivable
     
Valuation and qualifying accounts      
Beginning Balance $ 1,586 $ 1,513 $ 1,473
Charged to Cost and Expense 188 272 161
Deductions 345 199 121
Ending Balance 1,429 1,586 1,513
Reserve for inventory obsolescence
     
Valuation and qualifying accounts      
Beginning Balance 27 35 18
Charged to Cost and Expense 5 24 31
Deductions 16 32 14
Ending Balance $ 16 $ 27 $ 35