XML 79 R63.htm IDEA: XBRL DOCUMENT v3.4.0.3
Pension Plans - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Defined Contribution Plan Disclosure [Line Items]        
Defined contribution pension cost   $ 580 $ 510 $ 349
Percentage of capital and interest guaranteed by Swiss Life   100.00%    
Accumulated pension obligation   $ 8,957 $ 1,689  
Plan assets   4,455    
Net funded status   4,502    
Contributions paid or to be paid by employer   $ 487    
Scenario, Forecast [Member]        
Defined Contribution Plan Disclosure [Line Items]        
Contributions paid or to be paid by employer $ 664      
Minimum [Member]        
Defined Contribution Plan Disclosure [Line Items]        
Bond yield maturity period   15 years    
Maximum [Member]        
Defined Contribution Plan Disclosure [Line Items]        
Bond yield maturity period   20 years