Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional Information (Detail)

v3.10.0.1
Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]        
Intangible amortization expense $ 59 $ 59 $ 178 $ 177
Customer Relationships [Member]        
Finite Lived Intangible Assets [Line Items]        
Intangible amortization expense 45 $ 45 135 $ 135
Future amortization expenses, reminder of 2019 45   45  
Future amortization expenses, 2020 180   180  
Future amortization expenses, 2021 180   180  
Future amortization expenses, 2022 180   180  
Future amortization expenses, 2023 $ 180   $ 180