XML 37 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), beginning balance $ (2,631) $ 7,191 $ 25,660
Unrealized (losses) gains arising during the period (1,883) (11,274) (19,381)
Reclassification of realized net losses (gains) to net income 2,126 1,452 912
Accumulated other comprehensive income (loss), ending balance (2,388) (2,631) 7,191
Accumulated Translation Adjustment
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), beginning balance 17,559 22,813 35,639
Unrealized (losses) gains arising during the period (1,955) (5,254) (12,826)
Accumulated other comprehensive income (loss), ending balance 15,604 17,559 22,813
Accumulated Defined Benefit Plans Adjustment
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), beginning balance (20,236) [1] (15,658) [1] (10,014) [1]
Unrealized (losses) gains arising during the period 136 [1] (6,033) [1] (6,560) [1]
Reclassification of realized net losses (gains) to net income 2,094 [1] 1,455 [1] 916 [1]
Accumulated other comprehensive income (loss), ending balance (18,006) [1] (20,236) [1] (15,658) [1]
Accumulated Net Unrealized Investment Gain (Loss)
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Accumulated other comprehensive income (loss), beginning balance 46 36 35
Unrealized (losses) gains arising during the period (64) 13 5
Reclassification of realized net losses (gains) to net income 32 (3) (4)
Accumulated other comprehensive income (loss), ending balance $ 14 $ 46 $ 36
[1] The tax effects on unrealized gains (losses) of $0.07 million, $(3.8) million and $(3.6) million as of April 30, 2014, 2013 and 2012, respectively. The tax effects on reclassifications of realized net losses of $1.0 million, $0.9 million and $0.5 million as of April 30, 2014, 2013 and 2012, respectively.