Note 1 - The Company and Summary of Significant Accounting Policies (Details) - Significant Customers (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013
Medical segment
Segment, net sales (in Dollars)	$ 4,981	$ 4,507	$ 3,968	$ 3,652	$ 4,200	$ 3,952	$ 3,739	$ 3,396	$ 17,108	$ 15,287
Stryker [Member] | Medical [Member] | Customer Concentration Risk [Member] | Sales Revenue, Segment [Member]
Medical segment
Segement, concentration risk									35.00%	26.00%
Stryker [Member] | Medical [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Medical segment
Segement, concentration risk									29.00%	20.00%
Stryker [Member] | Medical [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Medical segment
Segement, concentration risk									27.00%	41.00%
Stryker [Member] | Medical [Member] | Customer Concentration Risk [Member]
Medical segment
Segment, net sales (in Dollars)									4,911	3,052
Pratt & Whitney [Member] | Industrial [Member] | Customer Concentration Risk [Member] | Sales Revenue, Segment [Member]
Medical segment
Segement, concentration risk									18.00%	26.00%
Pratt & Whitney [Member] | Industrial [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Medical segment
Segement, concentration risk									3.00%	6.00%
Pratt & Whitney [Member] | Industrial [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Medical segment
Segement, concentration risk									9.00%	2.00%
Pratt & Whitney [Member] | Industrial [Member] | Customer Concentration Risk [Member]
Medical segment
Segment, net sales (in Dollars)									527	944
Medical [Member]
Medical segment
Segment, net sales (in Dollars)									14,133	11,630
Industrial [Member]
Medical segment
Segment, net sales (in Dollars)									$ 2,975	$ 3,657