XML 85 R71.htm IDEA: XBRL DOCUMENT v3.20.4
Debt and Financing Arrangements - Additional Information (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Outstanding balance under applicable credit facility $ 108,000,000 $ 105,500,000
Other line of credit    
Debt Instrument [Line Items]    
Revolving loan commitment 20,000,000  
Outstanding line of credit 0 0
2018 credit facility    
Debt Instrument [Line Items]    
Outstanding balance under applicable credit facility 108,000,000.0 $ 105,500,000
Available funds under credit facility $ 286,400,000