Concentrations (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Equipment Net
Total equipment, net	1,652,000	1,310,000
Product Concentration Risk [Member] | AXP [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	39.00%	34.00%	40.00%
Product Concentration Risk [Member] | BioArchive [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	32.00%	37.00%	36.00%
Product Concentration Risk [Member] | Res-Q/MXP [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	11.00%	11.00%	5.00%
Product Concentration Risk [Member] | ThermoLine [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	4.00%	6.00%	7.00%
Product Concentration Risk [Member] | CryoSeal [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	7.00%	3.00%	3.00%
Geographic Concentration Risk [Member]
Sales to customers [Abstract]
Sales to customers	19,023,000	23,400,000	23,088,000
Equipment Net
Total equipment, net	1,652,000	1,310,000
Geographic Concentration Risk [Member] | United States [Member]
Sales to customers [Abstract]
Sales to customers	10,783,000	13,745,000	13,827,000
Equipment Net
Total equipment, net	1,269,000	904,000
Geographic Concentration Risk [Member] | Costa Rica [Member]
Equipment Net
Total equipment, net	205,000	195,000
Geographic Concentration Risk [Member] | All other countries [Member]
Equipment Net
Total equipment, net	178,000	211,000
Geographic Concentration Risk [Member] | Asia [Member]
Sales to customers [Abstract]
Sales to customers	4,010,000	3,697,000	4,303,000
Geographic Concentration Risk [Member] | Europe [Member]
Sales to customers [Abstract]
Sales to customers	1,806,000	3,453,000	3,117,000
Geographic Concentration Risk [Member] | South America [Member]
Sales to customers [Abstract]
Sales to customers	1,505,000	1,904,000	1,405,000
Geographic Concentration Risk [Member] | Other [Member]
Sales to customers [Abstract]
Sales to customers	919,000	601,000	436,000
Distributor 1 [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, major customer	6,746,000	7,824,000	9,890,000
Distributor 1 [Member] | Accounts Receivable [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	22.00%	14.00%
Distributor 1 [Member] | Sales Revenue [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	35.00%	33.00%	43.00%
Distributor 1 [Member] | Sales Revenue [Member] | Customer Concentration Risk [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	80.00%
Distributor 2 [Member] | Accounts Receivable [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	13.00%
Distributor 2 [Member] | Sales Revenue [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	10.00%	10.00%
Concentration risk, major customer	1,870,000	2,229,000
Distributor 3 [Member] | Accounts Receivable [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	13.00%
Distributor 4 [Member] | Accounts Receivable [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	12.00%
Distributor 5 [Member] | Accounts Receivable [Member]
Concentration of Risk by Customer Product and Geographic Area [Abstract]
Concentration risk, percentage (in hundredths)	10.00%