Condensed Consolidating Financial Statements (Details 4) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	$ 1,594	$ (31,606)
Investing activities:
Capital expenditures	(11,975)	(18,337)
Change in restricted cash	558	2,874
Proceeds from sale of assets	2,451	0
Proceeds from sale of discontinued operations	10,125	0
Net cash provided by (used in) investing activities	1,159	(15,463)
Financing activities:
Proceeds from revolving line of credit	14,300	21,000
Payments of revolving line credit	(7,500)	0
Deferred acquisition payments	(11,597)	(11,452)
Payments of long-term debt	(3,135)	(1,422)
Proceeds from exercise of stock options	25	57
Net cash provided by (used in) financing activities	(7,907)	8,183
Net increase (decrease) in cash and cash equivalents	(5,154)	(38,886)
Effect of foreign currency fluctuations on cash	(1,199)	608
Cash and cash equivalents at beginning of fiscal period	57,929	95,978
Cash and cash equivalents at end of fiscal period	51,576	57,700
Reportable legal entities | Parent
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	12,417	(3,747)
Investing activities:
Capital expenditures	0
Change in restricted cash	0
Proceeds from sale of assets	0
Proceeds from sale of discontinued operations	0
Net cash provided by (used in) investing activities	0	0
Financing activities:
Proceeds from revolving line of credit	0	0
Payments of revolving line credit	0
Deferred acquisition payments	(10,597)	(10,452)
Payments of long-term debt	(1,820)	(1,404)
Proceeds from exercise of stock options	25	57
Net cash provided by (used in) financing activities	(12,392)	(11,799)
Net increase (decrease) in cash and cash equivalents	25	(15,546)
Effect of foreign currency fluctuations on cash	0	0
Cash and cash equivalents at beginning of fiscal period	616	17,202
Cash and cash equivalents at end of fiscal period	641	1,656
Reportable legal entities | Guarantor Subsidiaries
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	4,666	(29,147)
Investing activities:
Capital expenditures	(5,514)	(9,474)
Change in restricted cash	558	2,874
Proceeds from sale of assets	2,273
Proceeds from sale of discontinued operations	0
Net cash provided by (used in) investing activities	(2,683)	(6,600)
Financing activities:
Proceeds from revolving line of credit	14,300	9,000
Payments of revolving line credit	(7,500)
Deferred acquisition payments	(1,000)	(1,000)
Payments of long-term debt	0	(18)
Proceeds from exercise of stock options	0
Net cash provided by (used in) financing activities	5,800	7,982
Net increase (decrease) in cash and cash equivalents	7,783	(27,765)
Effect of foreign currency fluctuations on cash	1	(475)
Cash and cash equivalents at beginning of fiscal period	22,200	52,056
Cash and cash equivalents at end of fiscal period	29,984	23,816
Reportable legal entities | Non-Guarantor Subsidiaries
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	(15,489)	1,288
Investing activities:
Capital expenditures	(6,461)	(8,863)
Change in restricted cash	0
Proceeds from sale of assets	178
Proceeds from sale of discontinued operations	10,125
Net cash provided by (used in) investing activities	3,842	(8,863)
Financing activities:
Proceeds from revolving line of credit	0	12,000
Payments of revolving line credit	0
Deferred acquisition payments	0
Payments of long-term debt	(1,315)
Proceeds from exercise of stock options	0
Net cash provided by (used in) financing activities	(1,315)	12,000
Net increase (decrease) in cash and cash equivalents	(12,962)	4,425
Effect of foreign currency fluctuations on cash	(1,200)	1,083
Cash and cash equivalents at beginning of fiscal period	35,113	26,720
Cash and cash equivalents at end of fiscal period	20,951	32,228
Reclassifications and Eliminations
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	0	0
Investing activities:
Capital expenditures	0	0
Change in restricted cash	0	0
Proceeds from sale of assets	0
Proceeds from sale of discontinued operations	0
Net cash provided by (used in) investing activities	0	0
Financing activities:
Proceeds from revolving line of credit	0	0
Payments of revolving line credit	0
Deferred acquisition payments	0	0
Payments of long-term debt	0	0
Proceeds from exercise of stock options	0	0
Net cash provided by (used in) financing activities	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign currency fluctuations on cash	0	0
Cash and cash equivalents at beginning of fiscal period	0	0
Cash and cash equivalents at end of fiscal period	$ 0	$ 0