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Stock-Based Compensation - Restricted stock activity (Details) (USD $)
0 Months Ended 1 Months Ended 6 Months Ended 0 Months Ended 12 Months Ended
Jun. 30, 2012
InMoTx, Inc. [Member]
Common Stock [Member]
Dec. 31, 2011
InMoTx, Inc. [Member]
Common Stock [Member]
Dec. 29, 2012
2005 Equity Incentive Plan [Member]
Dec. 29, 2012
Unregistered Restricted Stock Outside of Stock Plans [Member]
Common Stock [Member]
Jun. 25, 2012
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Jun. 25, 2011
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Apr. 15, 2011
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Jun. 30, 2012
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Dec. 29, 2012
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Jun. 30, 2010
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Jun. 25, 2010
Unregistered Restricted Stock Outside of Stock Plans [Member]
MobileRobots [Member]
Common Stock [Member]
Jan. 10, 2011
Unregistered Restricted Stock Outside of Stock Plans [Member]
InMoTx, Inc. [Member]
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares of unregistered restricted stock issued outside of equity incentive plans in connection with acquisitions, total       468,956       7,603 7,603 368,956 368,956 100,000
Number of restricted stock awards vested (19,500)   (25,811)   (7,603) (65,293)            
Awards accelerated vesting, Shares             (173,074) (115,383)        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]                        
Balance at June 30,2012, Shares     0                  
Restricted stock activity, Awarded     178,000                  
Restricted stock activity, Forfeited due to cancellation or for taxes   (80,500) (47,625)                  
Balance at September 29, 2012, Shares     104,564                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]                        
Balance at June 30, 2012, Grant Date Fair Market Value     $ 0.00                  
Awards Granted, Grant Date Fair Market Value     $ 4.31                  
Awards Vested, Grant Date Fair Market Value     $ 4.31                  
Awards Forfeited, Grant Date Fair Market Value     $ 4.31                  
Balance at September 29, 2012s, Grant Date Fair Market Value     $ 4.31