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Description of Business and Summary of Significant Accounting Policies and Practices (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value of Cash and Cash Equivalents

The following table provides information about the fair value of our cash and cash equivalents balance (in thousands):

	Years ended December 31,
	2019				2020
Level 1 Assets:
Cash	$	14,463			$	13,492
Money market funds		27,268				20,359
Total cash and cash equivalents	$	41,731			$	33,851

Allowance for Doubtful Accounts and Advertiser Credit Activity

The allowance for doubtful accounts activity for the periods indicated is as follows (in thousands):

		Balance at beginning of period				Charged to costs and expenses				Write-offs, net of recoveries				Balance at end of period
December 31, 2019			417				4				155				266
December 31, 2020			266				246				68				444

The allowance for advertiser credits activity for the periods indicated is as follows (in thousands):

		Balance at beginning of period				Additions charged against revenue				Credits processed and other				Balance at end of period
December 31, 2019			543				242				632				153
December 31, 2020			153				1,029				520				662

Computation of Net Loss Per Share Basic and Diluted

The following table presents the computation of basic net loss per share for the periods ended (in thousands, except per share amounts):

		Years ended December 31,
		2019								2020
		Class A				Class B				Class A				Class B
Basic net loss per share:
Numerator:
Net loss from continuing operations, net of tax		$	(1,026	)		$	(8,706	)		$	(4,233	)		$	(37,785	)
Discontinued operations, net of tax			600				5,090				360				3,212
Net loss applicable to common stockholders		$	(426	)		$	(3,616	)		$	(3,873	)		$	(34,573	)
Denominator:
Weighted average number of shares    outstanding used to calculate basic net    loss per share			4,793				40,667				4,661				41,599
Basic net income (loss) per share:
Continuing operations, net of tax		$	(0.21	)		$	(0.21	)		$	(0.91	)		$	(0.91	)
Discontinued operations, net of tax			0.12				0.12				0.08				0.08
Basic net loss per share applicable to    common stockholders		$	(0.09	)		$	(0.09	)		$	(0.83	)		$	(0.83	)

The following table presents the computation of diluted net loss per share for the periods ended (in thousands, except per share amounts):

		Years ended December 31,
		2019								2020
		Class A				Class B				Class A				Class B
Diluted net loss per share:
Numerator:
Net loss from continuing operations, net of tax		$	(1,026	)		$	(8,706	)		$	(4,233	)		$	(37,785	)
Reallocation of net loss for Class A shares as    a result of conversion of Class A to Class B    shares			—				(1,026	)			—				(4,233	)
Diluted net loss from continuing operations, net of tax		$	(1,026	)		$	(9,732	)		$	(4,233	)		$	(42,018	)
Net income from discontinued operations, net of tax			600				5,090				360				3,212
Reallocation of discontinued operations for    Class A shares as a result of conversion of    Class A to Class B share			—				600				—				360
Diluted net income from discontinued operations, net of tax		$	600			$	5,690			$	360			$	3,572
Net loss applicable to common    stockholders		$	(426	)		$	(4,042	)		$	(3,873	)		$	(38,446	)
Denominator:
Weighted average number of shares    outstanding used to calculate basic net    loss per share			4,793				40,667				4,661				41,599
Conversion of Class A to Class B common    shares outstanding			—				4,793				—				4,661
Weighted average number of shares    outstanding used to calculate diluted net    loss per share			4,793				45,460				4,661				46,260
Diluted net loss per share:
Continuing operations, net of tax		$	(0.21	)		$	(0.21	)		$	(0.91	)		$	(0.91	)
Discontinued operations, net of tax			0.12				0.12				0.08				0.08
Diluted net loss per share applicable    to common stockholders		$	(0.09	)		$	(0.09	)		$	(0.83	)		$	(0.83	)

Accounts Receivable

Schedules of Concentration of Risk, by Risk Factor

The Company has one customer that represents more than 10% of consolidated accounts receivable. The outstanding receivable balance for this customer is as follows (in percentages):

		At December 31,
		2019				2020
Customer A			16	%			18	%

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