Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Allowance for Doubtful Accounts

	Balance at Beginning of Period		Adjustments to Costs and Expenses		Write- offs			Balance at End of Period
Allowance for doubtful accounts:
Year ended December 31, 2017	$	19	$	34	$	(44	)	$	9
Year ended December 31, 2018	$	9	$	24	$	(20	)	$	13

Summary of Cash, Cash Equivalents and Investments

	For the Year Ended December 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash	$	8,391	$	—	$	—		$	8,391
Money market fund		14,295		—		—			14,295
Certificates of deposit		1,171		—		(1	)		1,170
Commercial paper		3,986		—		(1	)		3,985
Corporate notes and bonds		14,899		—		(66	)		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

	For the Year Ended December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash	$	7,408	$	—	$	—		$	7,408
Money market fund		10,643	$	—		(1	)		10,642
Certificates of deposit		1,207		—		(2	)		1,205
Commercial paper		2,494		—		(1	)		2,493
Corporate notes and bonds		22,846		—		(76	)		22,770
U.S. government agency securities		4,719		—		(4	)		4,715
	$	49,317	$	—	$	(84	)	$	49,233
Classified as:
Cash and cash equivalents	$	18,051	$	—	$	(1	)	$	18,050
Short-term investments		31,266		—		(83	)		31,183
	$	49,317	$	—	$	(84	)	$	49,233

Summary of Estimated Fair Value of Available-For-Sale Securities Classified by Stated Maturity Date

	December 31,
	2018		2017
Due within one year	$	20,874	$	22,228
Due within two years		3,593		8,955
	$	24,467	$	31,183

Summary of Unrealized Losses for Available-For-Sale Investments

As of December 31, 2018	In Loss Position Less Than 12 Months					In Loss Position More Than 12 Months				Total in Loss Position
Description	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Certificates of deposit	$	720	$	(1	)	$	—	$	—	$	719	$	(1	)
Corporate notes and bonds		18,883		(67	)		—		—		18,816		(67	)
U.S. government agency securities		6,976		(1	)		—		—		6,975		(1	)
Total	$	26,579	$	(69	)	$	—	$	—	$	26,510	$	(69	)

As of December 31, 2017	In Loss Position Less Than 12 Months					In Loss Position More Than 12 Months					Total in Loss Position
Description	Fair Value		Unrealized Losses			Fail Value		Unrealized Losses			Fair Value		Unrealized Losses
Certificates of deposit	$	718	$	(2	)	$	—	$	—		$	718	$	(2	)
Corporate notes and bonds		16,530		(32	)		6,947		(47	)		23,477		(79	)
U.S. government agency securities		3,720		(3	)		998		—			4,718		(3	)
Total	$	20,968	$	(37	)	$	7,945	$	(47	)	$	28,913	$	(84	)

Disaggregation of revenue

	Twelve months ended December 31,
	2018		2017
Services	$	64,476	$	54,670
Software and other		5,073		5,451
Total revenue	$	69,549	$	60,121

Computation of Basic and Diluted Net Earnings (Loss) per Share

	Year Ended December 31,
	2018			2017
Net loss	$	(9,100	)	$	(1,526	)
Basic:
Weighted-average shares of common stock outstanding		18,826			18,644
Shares used in computing basic net loss per share		18,826			18,644
Basic net loss per share	$	(0.48	)	$	(0.08	)
Diluted:
Weighted-average shares of common stock outstanding		18,826			18,644
Add: Common equivalent shares outstanding		—			—
Shares used in computing diluted net loss per share		18,826			18,644
Diluted net loss per share	$	(0.48	)	$	(0.08	)

Components of Accumulated Other Comprehensive Loss

	Foreign Currency Translation Losses			Unrealized Gains (Losses) on Investments			Total
Balance as of December 31, 2017	$	(2,024	)	$	(84	)	$	(2,108	)
Current-period other comprehensive gain (loss)		(414	)		15			(399	)
Balance as of December 31, 2018	$	(2,438	)	$	(69	)	$	(2,507	)

Fair Value of Stock-Based Awards Valuation Assumptions

	Stock Option Plan						Employee Stock Purchase Plan
	2018			2017			2018			2017
Risk-free interest rate		2.43	%		1.71	%		2.31	%		0.5	%
Expected term (in years)		3.0			3.0			0.5			0.5
Volatility		41.2	%		41.2	%		29.0	%		39.0	%
Expected dividend		0	%		0	%		0	%		0	%
Weighted average grant-date fair value	$	0.84		$	0.68		$	0.67		$	0.39

Stock-Based Compensation Expense

	For the Year Ended December 31,
	2018		2017
Stock-based compensation expense related to grants of:
Stock options	$	395	$	144
ESPP		16		21
RSU		269		265
	$	680	$	430
Stock-based compensation expense recognized in:
Cost of service	$	63	$	109
Cost of software and others		-		4
Research and development		42		78
Sales and marketing		54		59
General and administrative		521		180
	$	680	$	430

Fair Value Hierarchy for Financial Assets Measured at Fair Value on Recurring Basis

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

As of December 31, 2017	Level 1		Level 2		Level 3		Total
Money market funds	$	10,642	$	—	$	—	$	10,642
Certificates of deposit		—		1,206		—		1,206
Commercial paper		—		2,493		—		2,493
Corporate notes and bonds		—		22,769		—		22,769
U.S. government agency securities		—		4,715		—		4,715
Total	$	10,642	$	31,183	$	—	$	41,825

Summary of Long-Lived Assets by Geographic Areas

	December 31,
	2018		2017
United States	$	702	$	1,132
India		-		-
Philippines		1		1
Total	$	703	$	1,133