Annual report pursuant to section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
An analysis of the allowance for doubtful accounts for the Company    
Balance at beginning of Year $ 1,773 $ 1,796
Acquired in acquisition      
Charged to costs and expenses 5,251 4,099
Deductions (3,888) (4,122)
Balance at end of Year $ 3,136 $ 1,773