Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands		Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2017		$ 1,679,128	$ 0	$ 716	$ 1,501,830	$ 176,582
Balance, Shares at Dec. 31, 2017			0	71,628
Net (loss) income		929	$ 0	$ 0	0	929
Shares issued in connection with stock-based compensation plans, net		(617)	0	$ 1	(618)	0
Shares issued in connection with stock-based compensation plans, net, Shares				62
Stock-based compensation expense		1,600	0	$ 0	1,600	0
Transactions with TEGNA, net	[1]	(2,683)	0	$ 2	(2,685)	0
Transactions with TEGNA, net, Shares	[1]			175
Balance at Mar. 31, 2018		1,678,357	$ 0	$ 719	1,500,127	177,511
Balance, Shares at Mar. 31, 2018			0	71,865
Balance at Dec. 31, 2018		$ 1,626,923	$ 0	$ 683	1,508,001	118,239	$ 0
Balance, Shares at Dec. 31, 2018		68,262	0	68,262
Net (loss) income		$ (9,031)	$ 0	$ 0	0	(9,031)	0
Other comprehensive loss, net		(7,279)	0	0	0	0	(7,279)
Repurchases of common stock		(20,000)	0	$ (9)	0	(19,991)	0
Repurchases of common stock, Shares				(881)
Shares issued in connection with stock-based compensation plans, net		(743)	0	$ 1	(744)	0	0
Shares issued in connection with stock-based compensation plans, net, Shares				62
Stock-based compensation expense		2,981	0	$ 0	2,981	0	0
Transactions with TEGNA, net	[1]	(181)	0	$ 0	(181)	0	0
Transactions with TEGNA, net, Shares	[1]			12
Balance at Mar. 31, 2019		$ 1,592,670	$ 0	$ 675	$ 1,510,057	$ 89,217	$ (7,279)
Balance, Shares at Mar. 31, 2019		67,455	0	67,455

[1] As a result of the Separation, certain stock-based awards previously granted by TEGNA to its employees were converted into stock of both TEGNA and Cars.com. The Company is responsible for any employee payroll taxes related to awards settled in Cars.com common stock for which stock was withheld for payroll tax purposes.