Depreciation and Amortization (Tables)

9 Months Ended

Sep. 30, 2019

Depreciation And Amortization [Abstract]

Depreciation and Amortization Expense Excluded from Operating Expenses in its Statements of Income and Comprehensive Income

The amounts of depreciation and amortization expense excluded from the following operating expenses in its Statements of Income and Comprehensive Income are: 

	Three months ended September 30,				Nine months ended September 30,
	2019		2018		2019		2018
Direct advertising expenses	$	59,556	$	51,360	$	175,871	$	155,832
General and administrative expenses		942		927		3,203		2,935
Corporate expenses		3,453		2,802		8,076		8,484
	$	63,951	$	55,089	$	187,150	$	167,251