Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Jun. 30, 2018
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Components of accumulated other comprehensive income
The components within AOCI, net of tax, are as follows:
 
June 30, 2018
 
March 31, 2018
Unrealized gain on foreign currency exchange rate hedges
$
5,566

 
$
243

Cumulative foreign currency translation loss
(20,689
)
 
(13,226
)
Accumulated other comprehensive loss
$
(15,123
)
 
$
(12,983
)