Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies- Accounts Receivable (Details)

v2.4.0.8
Summary of Significant Accounting Policies- Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Changes in the Allowance for Doubtful Accounts [Roll Forward]    
Allowance for doubtful accounts, beginning of period $ 1,519 $ 1,174
Charges to costs and expenses 1,253 509
Account write-offs and other (674) (63)
Allowance for doubtful accounts, end of period $ 2,098 $ 1,620
Minimum
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable Retainage 5.00%  
Maximum
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable Retainage 10.00%