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Banking and Liquidity - Additional Information (Detail) (USD $)
0 Months Ended 9 Months Ended 9 Months Ended 0 Months Ended
Aug. 30, 2013
Nov. 30, 2013
Nov. 30, 2013
Bank Debt
Nov. 30, 2013
Line of Credit
Feb. 28, 2013
Line of Credit
Nov. 30, 2013
Term Loan One
Feb. 28, 2013
Term Loan One
Nov. 30, 2013
Term Loan Two
Feb. 28, 2013
Term Loan Two
Nov. 30, 2013
Term Loan A
Nov. 30, 2013
Term Loan A
Before Amendment
Nov. 30, 2013
Term Loan A
After Amendment
Aug. 30, 2013
Aydin Displays Inc
Aug. 30, 2013
Aydin Displays Inc
Escrow
Line of Credit Facility [Line Items]                            
Combination of cash and additional earn-out potential payments                         $ 6,000,000  
Divestiture of business   15,000,000                     15,000,000 1,200,000
Escrow agreement expiration date Aug. 30, 2014                          
Outstanding balance of term loan     1,400,000               1,200,000 1,400,000    
Term loan interest rate                     9.00% 5.00%    
Term loan maturity date                   Aug. 31, 2014        
Line of credit outstanding       0 9,900,000 1,400,000 2,000,000 0 2,600,000          
Limited guarantee of the Chief Executive Officer   $ 3,000,000