Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Components of Property, Building and Equipment (Detail)

v3.20.4
Summary of Significant Accounting Policies - Components of Property, Building and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Other Long Term Assets [Line Items]    
Property, building and equipment, gross $ 221,087 $ 167,349
Less accumulated depreciation 82,721 69,441
Property, building and equipment, net 138,366 97,908
Land    
Other Long Term Assets [Line Items]    
Property, building and equipment, gross 7,339 7,339
Building and leasehold improvements    
Other Long Term Assets [Line Items]    
Property, building and equipment, gross 40,766 36,142
Transportation equipment    
Other Long Term Assets [Line Items]    
Property, building and equipment, gross 19,821 12,470
Fixed equipment    
Other Long Term Assets [Line Items]    
Property, building and equipment, gross 365 376
Office furniture and medical equipment    
Other Long Term Assets [Line Items]    
Property, building and equipment, gross 104,557 94,993
Construction in progress    
Other Long Term Assets [Line Items]    
Property, building and equipment, gross $ 48,239 $ 16,029