Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Presentation - Additional Information (Detail)

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Description of Business and Basis of Presentation - Additional Information (Detail) (USD $)
0 Months Ended 6 Months Ended 0 Months Ended
Feb. 10, 2014
Jun. 30, 2014
Agreement
Dec. 31, 2013
Jun. 30, 2013
Dec. 31, 2012
Jul. 28, 2014
Subsequent Event
Jul. 22, 2014
Subsequent Event
Basis Of Presentation [Line Items]              
Working capital deficit   $ 1,200,000          
Cash and cash equivalents   2,083,000 1,440,000 2,101,000 2,543,000    
Net accounts receivable   6,597,000 11,127,000        
Lines of credit remaining borrowing capacity   700,000          
Number revolving credit facility agreements   2          
Common stock shares issued 1,945,525           6,250,000
Common stock issued, price per share $ 2.57           $ 1.92
Proceeds from equity offering, gross 5,000,000           12,000,000
Proceeds from equity offering, net of expenses   4,793,000         11,700,000
Payments of stock issuance costs 200,000           300,000
Payments under revolving lines of credit           $ 2,900,000