
Quarter ended	March 31, 2019		June 30, 2019		September 30, 2019		December 31, 2019
Sales ⁽¹⁾	$	93,617	$	93,491	$	90,516	$	104,141
Gross profit ⁽²⁾	53,018		50,741		50,772		43,601
Net income (loss) ⁽³⁾	152		(6,405)		(6,199)		(49,695)
Net income (loss) per share:
Basic	$	0.01	$	(0.37)	$	(0.36)	$	(2.85)
Diluted	$	0.01	$	(0.37)	$	(0.36)	$	(2.85)

⁽¹⁾For the second quarter of 2019, sales were reduced by an incremental $5.8 million sales adjustment related to our GSA Contracts based on the results of the Review conducted by our outside legal counsel and forensic accountants.

⁽²⁾For the fourth quarter of 2019, gross profit was reduced by a $15.1 million inventory reserve charge primarily driven by the evaluation of our hardware product portfolio, which increased our reserve for excess and obsolete inventory.

⁽³⁾For the fourth quarter of 2019, we incurred an impairment loss of $35.2 million, which included $21.2 million in goodwill, $10.5 million in intangible assets associated with recent acquisitions, $1.4 million in intangible assets related to capitalized patents, and $2.1 million in other asset write-downs.


Quarter ended	March 31, 2018		June 30, 2018		September 30, 2018		December 31, 2018
Sales ⁽¹⁾	$	92,834	$	98,244	$	99,705	$	112,844
Gross profit ⁽²⁾	52,106		55,994		50,612		62,841
Net income (loss) ⁽³⁾	455		1,205		(2,488)		5,758
Net income (loss) per share:
Basic	$	0.03	$	0.07	$	(0.15)	$	0.33
Diluted	$	0.03	$	0.07	$	(0.15)	$	0.33

⁽¹⁾For the fourth quarter of 2018, sales were reduced by a $4.8 million estimated cumulative sales adjustment, representative of the last six years of estimated overcharges to the Government under the GSA Contracts.

⁽²⁾For the third quarter of 2018, gross profit was reduced by a $4.7 million inventory reserve charge resulting from an analysis of our inventory reserves in connection with our new product introductions and acquisitions, which increased our reserve for excess and obsolete inventory.

⁽³⁾For the fourth quarter of 2018, as additional guidance was released during the Securities and Exchange Commission's Staff Accounting Bulletin 118 remeasurement period related to the U.S. Tax Cuts and Jobs Act of 2017, we completed our transition tax analysis, which resulted in an income tax benefit of $1.0 million.