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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]                      
Doubling bonus depreciation for five years, percent 100.00%               100.00%    
Tax Cuts and Jobs Act of 2017, income tax benefit $ 3,700                    
Tax Cuts and Jobs Act of 2017, Change in tax rate, bonus depreciation $ 3,200                    
Deduction to effective income tax rate, percent                 3.00%    
Additional income tax expense (benefit)                   $ (600)  
Percent of eligible investments for state and local tax credit 1.00%               1.00%    
Executive compensation limitation $ 1,000               $ 1,000    
Income Tax Examination [Line Items]                      
Income tax provision   $ 742 $ 3,943 $ 2,695 $ 4,129 $ 5,688 $ 2,894 $ 460 $ 13,320 13,171 $ 20,794
State and Local Jurisdiction                      
Income Tax Examination [Line Items]                      
Income tax provision                   $ (1,200)