Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Additional Information (Detail)

Basis of Presentation - Additional Information (Detail) (USD $)
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2011
Jul. 26, 2013
Subsequent Event
Basis Of Presentation [Line Items]          
Number of operating segment 1        
Working capital $ 3,800,000        
Cash and cash equivalents 2,101,000 2,543,000 1,607,000 3,307,000  
Net accounts receivable 11,477,000 11,680,000      
Lines of credit remaining borrowing capacity 1,500,000        
Number revolving credit facility agreements 2        
Maximum stock offering price         $ 30,000,000
Period of financial resources The working capital and borrowings available under the lines of credit should be sufficient to fund the requirements of the Company; however, management will also continue to monitor the liquidity of the Company and is prepared to implement cash saving measures or potentially sell registered securities in the event that its plans to grow revenue do not materialize in the timeline anticipated by management.