Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Impairments - Additional Information (Detail)

v3.21.1
Goodwill and Other Impairments - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Finite Lived Intangible Assets [Line Items]      
Intangible amortization expense   $ 11 $ 237
Impairment of goodwill and intangible assets $ 184   6,449
Impairment losses, goodwill     1,222
Permits [Member]      
Finite Lived Intangible Assets [Line Items]      
Impairment losses, intangible assets     1,700
Tradename [Member]      
Finite Lived Intangible Assets [Line Items]      
Impairment losses, intangible assets     2,000
Customer Relationships [Member]      
Finite Lived Intangible Assets [Line Items]      
Intangible amortization expense $ 0 $ 0 180
Impairment losses, intangible assets     1,208
Other Long-Lived Assets [Member]      
Finite Lived Intangible Assets [Line Items]      
Impairment losses, intangible assets     $ 319