Note 1. Summary of Significant Accounting Policies (Tables)

6 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	Three Months Ended September 30,						Six Months Ended September 30,
	2013			2012			2013			2012
Medical segment
Stryker	$	1,201		$	395		$	2,346		$	1,008
Percentage of total segment net sales		35	%		15	%		36	%		19	%
Percentage of total net sales		30	%		11	%		31	%		14	%
Percentage of total accounts receivable, net		36	%		11	%
Industrial segment
Pratt & Whitney, a division of United Technology Corporation	$	31		$	426		$	66		$	706
Percentage of total segment net sales		5	%		42	%		6	%		37	%
Percentage of total net sales		1	%		11	%		1	%		10	%
Percentage of accounts receivable, net		1	%		16	%