Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2014
Net Income from Discontinued Operations on the Condensed Consolidated Statements of Operations
Income from discontinued operations, net of income taxes	$ 308	$ 802	$ 655	$ 1,563
PPT
Net Income from Discontinued Operations on the Condensed Consolidated Statements of Operations
Revenue	7,323	11,632	15,905	23,792
Income from operations	538	1,383	1,126	2,695
Other expense	37	0	37	0
Income before income taxes	501	1,383	1,089	2,695
Income tax provision	193	581	434	1,132
Income from discontinued operations, net of income taxes	308	802	655	1,563
Assets and Liabilities Relating to PPT
Accounts receivable, net of allowances of $204 and $218	3,969		3,969		5,015
Other current assets	114		114		167
Property, plant and equipment, net of accumulated depreciation of $1,178 and $1,086	173		173		261
Total assets held for sale	4,256		4,256		5,443
Accounts payable	2,517		2,517		3,009
Accrued liabilities	1		1		1
Accrued compensation	477		477		848
Total liabilities held for sale	2,995		2,995		3,858
Allowance for doubtful accounts	204		204		218
Accumulated depreciation	$ 1,178		$ 1,178		$ 1,086
Sales | Pro Forma | Product Concentration Risk | PPT
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent of total revenue	22.50%	39.50%	25.10%	40.80%