Note 6 - Segment Information (Tables)

6 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Chemical		Electronics			Total
Three months ended September 30, 2014
Revenue from external customers	$	341,121	$	407,472		$	748,593
Segment operating income (loss)	$	81,446	$	47,340		$	128,786
Three months ended September 30, 2013
Revenue from external customers	$	290,294	$	99,678		$	389,972
Segment operating income (loss)	$	51,225	$	(105,559	)	$	(54,334	)
Six months ended September 30, 2014
Revenue from external customers	$	638,279	$	733,988		$	1,372,267
Segment operating income (loss)	$	158,478	$	6,042		$	164,520
Six months ended September 30, 2013
Revenue from external customers	$	540,074	$	172,337		$	712,411
Segment operating income (loss)	$	121,796	$	(242,929	)	$	(121,133	)
Total assets at September 30, 2014	$	583,740	$	677,722		$	1,261,463
Total assets at March 31, 2014	$	613,406	$	216,822		$	830,228