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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Current assets:    
Accounts receivable, allowance for doubtful accounts receivable $ 2,345 $ 2,760
Temporary equity (See Note 13)    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 20,000,000 20,000,000
Stockholders' equity:    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 80,000,000 80,000,000
Common stock, shares issued (in shares) 25,623,982 23,844,711
Common stock, shares outstanding (in shares) 25,592,356 23,813,085
Treasury stock, shares (in shares) 31,626 31,626
Series A Convertible Preferred Stock [Member]    
Temporary equity (See Note 13)    
Preferred stock, shares issued (in shares) 30,000 30,000
Preferred stock, shares outstanding (in shares) 30,000 30,000
Series A-1 Convertible Preferred Stock [Member]    
Temporary equity (See Note 13)    
Preferred stock, shares issued (in shares) 10,000 11,000
Preferred stock, shares outstanding (in shares) 10,000 11,000
Series A-2 Preferred Stock [Member]    
Temporary equity (See Note 13)    
Preferred stock, shares issued (in shares) 14,000 0
Preferred stock, shares outstanding (in shares) 14,000 0