Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Statement of Comprehensive Income [Abstract]      
Taxes on unrealized gain (loss) on revaluation of long-term intercompany balance $ 200us-gaap_AdjustmentForLongTermIntercompanyTransactionsTaxBenefitExpense $ (67)us-gaap_AdjustmentForLongTermIntercompanyTransactionsTaxBenefitExpense $ 51us-gaap_AdjustmentForLongTermIntercompanyTransactionsTaxBenefitExpense