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Acquisitions Pension (Martin Currie) (Tables)
 3 Months Ended
Jun. 30, 2017
Martin Currie [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
 
 
June 30, 2017
 
March 31, 2017
Fair value of plan assets (at 5.4% expected weighted-average long-term return)
 
$
62,893

 
$
59,623

Benefit obligation (at 2.7% discount rate)
 
(99,802
)
 
(97,137
)
Unfunded status (excess of benefit obligation over plan assets)
 
$
(36,909
)
 
$
(37,514
)