Accounts Payable and Accrued Expenses - Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables And Accruals [Abstract]
Accounts payable	$ 11,500	$ 14,700
Accrued payroll and compensated absences	4,500	5,200
Accrued bonuses	4,300	6,300
Professional fees	300	500
Deferred revenue	2,400	2,800
Accrued national representation fees	1,000	1,000
Income taxes payable	8,500	300
Other taxes payable	2,100	3,300
Amounts due under joint sales agreements	1,300	1,200
Accrued property taxes	1,500	1,500
Accrued capital expenditures	700	700
Accrued media costs – digital	9,900	6,000
Other	5,900	7,500
Accounts Payable and Accrued Expenses	$ 53,931	$ 51,034