XML 25 R31.htm IDEA: XBRL DOCUMENT v2.4.0.8
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]    
Beginning balance $ 3,838 $ 2,171
Provision 673 1,581
Write-Offs (971) (1,203)
Ending balance $ 3,540 $ 2,549
Accounts receivable, general payment terms 30 days  
Accounts receivable, international extended payment terms greater than 90 days