Stock-based Compensation Narrative (Details) (USD $)	12 Months Ended			12 Months Ended									12 Months Ended							0 Months Ended			12 Months Ended			12 Months Ended						0 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2012 InMoTx, Inc. [Member]	Jun. 30, 2012 Stock Options [Member]	Jun. 30, 2012 ESPP [Member]	Jun. 30, 2012 Restricted Stock and RSU [Member]	Jun. 30, 2012 Restricted Stock Units (RSUs) [Member] April 2009 Grant [Member]	Jun. 30, 2012 1993 Stock Option Plan [Member]	Jun. 30, 2012 1995 Director Stock Option Plan [Member]	Jun. 30, 2012 2001 Stock Option Plan [Member]	Jun. 30, 2012 2004 Director Option Plan [Member]	Jun. 30, 2012 2005 Equity Incentive Plan [Member]	Jun. 30, 2012 2005 Equity Incentive Plan [Member] Restricted Stock and RSU [Member]	Jun. 30, 2012 Director Option Plan [Member] Initial Director Grant [Member] Prior to March 2010 [Member]	Jun. 30, 2012 Director Option Plan [Member] Initial Director Grant [Member] From March 2010 [Member]	Jun. 30, 2012 Director Option Plan [Member] Annual Non-Employee Director Grant [Member] Prior to March 2010 [Member]	Jun. 30, 2012 Director Option Plan [Member] Annual Non-Employee Director Grant [Member] From March 2010 [Member]	Jun. 30, 2012 Director Option Plan [Member] March 2010 One-time Grant [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]	Jun. 30, 2011 Unregistered Restricted Stock Outside of Stock Plans [Member] MobileRobots [Member]	Jun. 30, 2010 Unregistered Restricted Stock Outside of Stock Plans [Member] MobileRobots [Member]	Jun. 30, 2012 Unregistered Restricted Stock Outside of Stock Plans [Member] InMoTx, Inc. [Member]	Jun. 30, 2011 Unregistered Restricted Stock Outside of Stock Plans [Member] InMoTx, Inc. [Member]	Jun. 30, 2012 2008 ESPP [Member]	Jun. 30, 2011 2008 ESPP [Member]	Jun. 30, 2011 Stock Compensation Expense [Member]	Jun. 30, 2012 Stock Compensation Expense [Member] InMoTx, Inc. [Member]	Jun. 30, 2012 Common Stock [Member] InMoTx, Inc. [Member]	Sep. 20, 2011 Common Stock [Member] InMoTx, Inc. [Member]	Jun. 30, 2012 Common Stock [Member] Unregistered Restricted Stock Outside of Stock Plans [Member]	Jun. 25, 2010 Common Stock [Member] Unregistered Restricted Stock Outside of Stock Plans [Member] MobileRobots [Member]	Jan. 10, 2011 Common Stock [Member] Unregistered Restricted Stock Outside of Stock Plans [Member] InMoTx, Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option contractual term					10 years
Discount percentage, ESPP						15.00%
Plan-defined purchase date intervals						6 months
Equity compensation plans, number	2
Expired equity compensation plans, number	4
Subject to Oustanding Options and Restricted Stock - Options	1,473,000	1,332,000	1,236,000						23,903	1,200	88,000	107,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					4 years			6 months						2 years			4 years
Annual option grants																10,000		6,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Annual Vesting Percentage																50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage After One Year															25.00%				100.00%
Remaining equal vesting years after first anniversary															3 years
Stock-based compensation	$ 1,296,000	$ 3,075,000
Restructuring Charges	1,256,000	662,000		1,300,000																										498,000	95,000
Weighted average grant-date fair value of the options	$ 2.52	$ 3.49
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value													$ 4.45														$ 4.89	$ 1.46	$ 1.51
Assumed annualized forfeiture rate	5.00%
Options Granted	281,000	285,000
Granted options, estimated total grant date fair market value	1,100,000
Intrinsic value of options exercised	52,000
Cash received from stock option exercises and ESPP purchases	275,000	226,000
Total unrecognized compensation cost related to non-vested stock options granted and outstanding	$ 503,000
Options Outstanding, Weighted Average Remaining Contractual Life					1 year 1 month 17 days		0 years
Shares of Unregistered Restricted Stock Issued Outside of Equity Incentive Plans in Connection with Acquisitions, Total																							7,603	130,589	368,956	0	100,000							468,956	368,956	100,000
Shares of restricted stock with accelerated vesting, related to acquisition																						173,074	115,383	173,074
Shares of restricted stock vested, related to acquisition													55,705							7,603	65,293		7,603	65,293		19,500						19,500
Shares of restricted stock forfeited, related to acquisition													(36,295)													(80,500)							(80,500)
Awards issued in acquisition, Shares																												65,207
Common shares outstanding	10,529,019	9,745,000