Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Significant Accounting Policies

Deferred revenue

Balance at December 31, 2020	$	881
Deferred revenue		495
Recognition of unearned revenue		(187	)
Balance at June 30, 2021	$	1,189
Balance at December 31, 2019	$	1,193
Deferred revenue		1,452
Recognition of unearned revenue		(1,619	)
Balance at June 30, 2020	$	1,026

Cash, cash equivalents and investments

As of June 30, 2021	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash	$	8,347	$	-	$	-		$	8,347
Money market funds		23,948		-		-			23,948
Certificates of deposit		507		-		-			507
Commercial paper		775		-		-			775
Corporate notes and bonds		4,419		-		1			4,420
U.S. government treasury		500		-		-			500
Total	$	38,496	$	-	$	1		$	38,497
Classified as:
Cash and cash equivalents		32,295		-		-			32,295
Short-term investments		6,200		-		1			6,201
Total	$	38,495	$	-	$	1		$	38,496
As of December 31, 2020	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash	$	10,918	$	-	$	-		$	10,918
Money market funds		1,258		-		-			1,258
Certificates of deposit		492		-		-			492
Commercial paper		3,274		-		(1	)		3,273
Corporate notes and bonds		9,423		4		-			9,427
U.S. government treasury		4,599		-		-			4,599
Total	$	29,964	$	4	$	(1	)	$	29,967
Classified as:
Cash and cash equivalents		13,526		-		-			13,526
Short-term investments		16,438		4		(1	)		16,441
Total	$	29,964	$	4	$	(1	)	$	29,967

Fair value of marketable securities classified by the stated maturity date

	June 30, 2021		December 31, 2020
Due within one year	$	5,701	$	13,248
Due within two years		500		3,193
	$	6,201	$	16,441

Computation of basic and diluted earnings per share

	Three Months Ended June 30,					Six Months Ended June 30,
	2021			2020		2021			2020
Net income (loss)	$	(799	)	$	617	$	(2,793	)	$	981
Earnings per share - basic and diluted	$	(0.03	)	$	0.03	$	(0.13	)	$	0.05
Weighted-average shares of common stock outstanding - basic		24,150			19,054		22,189			19,060
Weighted-average shares of common stock outstanding - diluted		24,150			19,352		22,189			19,336