XML 37 R27.htm IDEA: XBRL DOCUMENT v3.4.0.3
The Company and Basis of Presentation - Liquidity (Details) - USD ($)
1 Months Ended 3 Months Ended
Mar. 21, 2016
Sep. 25, 2015
Mar. 31, 2016
Nov. 30, 2013
Apr. 03, 2016
Mar. 29, 2015
Jan. 03, 2016
Dec. 28, 2014
Liquidity [Line Items]                
Cash and cash equivalents         $ 23,302,000 $ 28,215,000 $ 19,136,000 $ 30,050,000
Share price (in dollars per share) $ 1.00   $ 1.00 $ 2.90 $ 1.06      
Common stock, par value (in dollars per share) $ 0.001   $ 0.001 $ 0.001 $ 0.001   $ 0.001  
Net proceeds $ 8,800,000   $ 8,800,000 $ 23,100,000 $ 10,000,000 $ 0    
Common Stock                
Liquidity [Line Items]                
Shares of common stock issued 10,000,000.0   10,000,000 8,740,000        
Revolving Line of Credit | Silicon Valley Bank                
Liquidity [Line Items]                
Cash and cash equivalents in available credit         $ 3,000,000      
Extended period of line of credit   2 years            
Loan advances   $ 6,000,000            
Loan advances subject to increase   $ 12,000,000.0