Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013
Summary of Significant Accounting Policies [Abstract]
Number of days in delivery period following sale of system	90 days
Bank line of credit, amount outstanding	$ 0	$ 0
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	25,533,000	27,927,000
Cash [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	15,499,000	17,895,000
Money Market Funds [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	10,034,000	10,032,000
Quoted Prices in Active Markets (Level 1) [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	25,533,000	27,927,000
Quoted Prices in Active Markets (Level 1) [Member] | Cash [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	15,499,000	17,895,000
Quoted Prices in Active Markets (Level 1) [Member] | Money Market Funds [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	10,034,000	10,032,000
Observable (Level 2) [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	0	0
Observable (Level 2) [Member] | Cash [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	0	0
Observable (Level 2) [Member] | Money Market Funds [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	0	0
Unobservable Inputs (Level 3) [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	0	0
Unobservable Inputs (Level 3) [Member] | Cash [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	0	0
Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member]
Fair Value By Asset Class [Line Items]
Cash and cash equivalents at fair value	$ 0	$ 0