Income Taxes Schedule of Effective Tax Rate Before Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014 Rate	Feb. 28, 2013 Rate	Feb. 29, 2012 Rate
Schedule of Effective Tax Rate Before Income Taxes [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ (9,329)	$ 12,479	$ 13,612
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Income Tax Reconciliation, State and Local Income Taxes	126	637	1,145
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	(0.50%)	1.80%	2.90%
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	868	1,034	192
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(3.30%)	2.90%	0.50%
Income Tax Reconciliation, Tax Contingencies	(387)	315	(241)
Effective Income Tax Rate Reconciliation, Tax Contingencies	1.50%	0.90%	(0.60%)
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount	(2,664)	0	0
Effective Income Tax Rate Reconciliation, Deduction, Other, Percent	10.00%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount	11,257	0	0
Effective Income Tax Rate Reconciliation, Tax Contingency, Foreign, Percent	(42.20%)	0.00%	0.00%
Income Tax Reconciliation, Foreign Income Tax Rate Differential	(828)	(1,090)	(135)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential	3.10%	(3.10%)	(0.40%)
Income Tax Reconciliation, Other Adjustments	2,016	388	921
Effective Income Tax Rate Reconciliation, Other Adjustments	(7.60%)	1.10%	2.30%
Income Tax Reconciliation, Change in Enacted Tax Rate	(614)	(270)	(885)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate	2.30%	(0.80%)	(2.20%)
Income Tax Reconciliation, Tax Credits, Research	(248)	(330)	(1,366)
Effective Income Tax Rate Reconciliation, Tax Credits, Research	0.90%	(0.90%)	(3.50%)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	(255)	0	0
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	1.00%	0.00%	0.00%
Income Tax Expense (Benefit), Continuing Operations	$ (58)	$ 13,163	$ 13,243
Effective Income Tax Rate, Continuing Operations	0.20%	36.90%	34.00%