Other Current Liabilities (Tables)

3 Months Ended

Jun. 30, 2012

Other Current Liabilities [Abstract]

Other current liabilities

	June 30, 2012		March 31, 2012
Engineering project reserves	$	1,677	$	1,637
Environmental reserves – Note 14		1,228		1,225
Accrued medical benefits cost		663		636
Accrued commissions		578		630
Other		894		851
Total	$	5,040	$	4,979