Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Disaggregation of Revenue

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Services	$	15,508	$	16,220	$	32,372	$	31,420
Software and other		1,188		1,360		2,388		2,735
Total revenue	$	16,696	$	17,468	$	34,760	$	33,990

Deferred Revenue

Balance as of March 31, 2019	$	1,315
Deferred revenue		487
Recognition of unearned revenue		(592	)
Balance as of June 30, 2019	$	1,210
Balance as of March 31, 2018	$	1,681
Deferred revenue		334
Recognition of unearned revenue		(565	)
Balance as of June 30, 2018	$	1,450

Summary of Cash, Cash Equivalents and Investments

As of June 30, 2019	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash	$	7,961	$	—	$	—		$	7,961
Money market funds		9,514		—		—			9,514
Certificates of deposit		471		—		—			471
Commercial paper		7,970		—		(2	)		7,968
Corporate notes and bonds		12,346		13		—			12,359
U.S. government agency securities		4,972		1		—			4,973
	$	43,234	$	14	$	(2	)	$	43,246
Classified as:
Cash and cash equivalents	$	21,466	$	—	$	(2	)	$	21,464
Short-term investments		21,768		14		—			21,782
	$	43,234	$	14	$	(2	)	$	43,246

As of December 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash	$	8,391	$	—	$	—		$	8,391
Money market funds		14,295		—		—			14,295
Certificates of deposit		1,171		—		(1	)		1,170
Commercial paper		3,986		—		(66	)		3,985
Corporate notes and bonds		14,899		—		(1	)		14,833
U.S. government agency securities		6,976		—		(1	)		6,975
	$	49,718	$	—	$	(69	)	$	49,649
Classified as:
Cash and cash equivalents	$	25,182	$	—	$	—		$	25,182
Short-term investments		24,536		—		(69	)		24,467
	$	49,718	$	—	$	(69	)	$	49,649

Summary of Estimated Fair Value of Available-for-sale Securities Classified by Stated Maturity Date

	June 30, 2019		December 31, 2018
Due within one year	$	17,176	$	20,874
Due within two years		4,606		3,593
	$	21,782	$	24,467

Financial Assets (Cash Equivalents and Investments) Measured at Fair Value on Recurring Basis

As of June 30, 2019	Level 1		Level 2		Level 3		Total
Money market funds	$	9,514	$	—	$	—	$	9,514
Certificates of deposit		—		471		—		471
Commercial paper		—		7,968		—		7,968
Corporate notes and bonds		—		12,359		—		12,359
U.S. government agency securities		—		4,973		—		4,973
Total	$	9,514	$	25,771	$	—	$	35,285

As of December 31, 2018	Level 1		Level 2		Level 3		Total
Money market funds	$	14,295	$	—	$	—	$	14,295
Certificates of deposit		—		1,170		—		1,170
Commercial paper		—		3,985		—		3,985
Corporate notes and bonds		—		14,833		—		14,833
U.S. government agency securities		—		6,975		—		6,975
Total	$	14,295	$	26,963	$	—	$	41,258

Components of Accumulated Other Comprehensive Loss

	Foreign Currency Translation Losses			Unrealized Losses on Investments			Total
Balance as of December 31, 2018	$	(2,438	)	$	(69	)	$	(2,507	)
Current-period other comprehensive income		105			81			186
Balance as of June 30, 2019	$	(2,333	)	$	12		$	(2,321	)

Fair Value of Stock-based Awards Valuation Assumptions

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Stock Option Plan:
Risk-free interest rate		1.7	%		—		1.7	%		2.4	%
Expected term	3 years				—	3 years			3 years
Volatility		34.7	%		—		34.7	%		41.3	%
Expected dividend		—	%		—		—	%		—	%
Weighted average fair value (per share)	$	0.56				$	0.56		$	0.84

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Employee Stock Purchase Plan:
Risk-free interest rate		2.43	%		2.09	%		2.43	%		2.09	%
Expected term	0.5 years			0.5 years			0.5 years			0.5 years
Volatility		32.98	%		32.55	%		32.98	%		32.55	%
Expected dividend		0	%		0	%		0	%		0	%
Weighted average fair value (per share)	$	0.24		$	0.72		$	0.24		$	0.72

Stock-based Compensation Expense

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Stock-based compensation expense related to grants of:
Stock options	$	37	$	32	$	70	$	320
Employee Stock Purchase Plan (“ESPP”)		13		6		13		11
Restricted Stock Units (“RSU”)		40		70		59		153
	$	90	$	108	$	142	$	484

Stock-based compensation expense recognized in:
Cost of services	$	18	$	17	$	26	$	38
Cost of software and other		—		—		—		—
Research and development		8		10		15		24
Sales and marketing		12		7		24		26
General and administrative		52		74		77		396
	$	90	$	108	$	142	$	484

Computation of basic and diluted earnings (loss) per share

	Three Months				Six Months
	Ended				Ended
	June 30,				June 30,
	2019		2018		2019		2018
Net income (loss)	$	653	$	396	$	2,096	$	(370	)
Basic:
Weighted-average shares of common stock outstanding and used in computing basic income (loss) per share		18,962		18,765		18,959		18,751
Basic earnings (loss) per share		0.03		0.02		0.11		(0.02	)
Diluted:
Weighted-average shares of common stock outstanding		18,962		18,765		18,959		18,751
Add: Common equivalent shares outstanding		56		182		51		-
Shares used in computing diluted earnings (loss) per share		19,018		18,947		19,010		18,751
Diluted earnings (loss) per share	$	0.03	$	0.02	$	0.11	$	(0.02	)

Potential Common Shares Outstanding Excluded from Computation of Diluted Loss per Share

	As of June 30,
	2019		2018
Stock options		819		871
RSUs		78		211
		897		981