Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers - Additional Information (Details)

v3.19.2
Revenue from Contracts with Customers - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Costs in Excess of Billings, Current $ 23,646   $ 26,454
Sales 91,712 $ 88,902  
Cost of sales (54,570) (49,173)  
Increase in contract assets (2,808)    
Contract liabilities 6,344   $ 6,814
Revenues recognized at point in time      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Sales $ 51,414 $ 56,896  
Percentage of total revenue 56.10% 64.00%  
Revenues recognized over time      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Sales $ 40,298 $ 32,006  
Percentage of total revenue 43.90% 36.00%