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Quarterly Financial Results (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]  
Schedule of quarterly financial information
Financial information for interim periods was as follows:
 
First Quarter
 
Second Quarter
 
Third Quarter
 
Fourth Quarter
 
(in thousands, except per share amounts)
2019
 
 
 
 
 
 
 
Product sales(a)
$
13,215

 
$
15,189

 
$
14,808

 
$
18,713

Service sales
23,161

 
24,541

 
24,503

 
23,763

Cost of product sales (a)
8,284

 
12,649

 
10,823

 
11,131

Cost of service sales
15,373

 
15,379

 
15,029

 
15,475

Operating expenses (a)
18,953

 
18,381

 
18,317

 
19,195

Loss from continuing operations (a)
(6,234
)
 
(6,679
)
 
(4,858
)
 
(3,325
)
Net loss from continuing operations (a)
(6,497
)
 
(3,294
)
 
(3,308
)
 
(2,910
)
Net income (loss) from discontinued operations
243

 
50,630

 
(1,036
)
 
(573
)
Net (loss) income (a)
$
(6,254
)
 
$
47,336

 
$
(4,344
)
 
$
(3,483
)
Net loss continuing operations per share (b):
 
 
 
 
 
 
 
Basic
$
(0.38
)
 
$
(0.19
)
 
$
(0.19
)
 
$
(0.17
)
Diluted
$
(0.38
)
 
$
(0.19
)
 
$
(0.19
)
 
$
(0.17
)
Net income (loss) discontinued operations per share (b):
 
 
 
 
 
 
 
Basic
$
0.01

 
$
2.90

 
$
(0.06
)
 
$
(0.03
)
Diluted
$
0.01

 
$
2.90

 
$
(0.06
)
 
$
(0.03
)
Net (loss) income per share (b):
 
 
 
 
 
 
 
Basic
$
(0.36
)
 
$
2.71

 
$
(0.25
)
 
$
(0.20
)
Diluted
$
(0.36
)
 
$
2.71

 
$
(0.25
)
 
$
(0.20
)
2018
 
 
 
 
 
 
 
Product sales
$
13,992

 
$
16,162

 
$
16,367

 
$
16,756

Service sales
21,413

 
22,470

 
22,945

 
22,924

Cost of product sales
8,923

 
10,094

 
9,767

 
10,726

Cost of service sales
12,370

 
14,231

 
14,133

 
14,708

Operating expenses
17,944

 
16,887

 
17,269

 
16,623

Loss from continuing operations
(3,832
)
 
(2,580
)
 
(1,857
)
 
(2,377
)
Net loss from continuing operations
(4,446
)
 
(2,402
)
 
(1,931
)
 
(2,665
)
Net income from discontinued operations
553

 
1,059

 
757

 
843

Net loss
$
(3,893
)
 
$
(1,343
)
 
$
(1,174
)
 
$
(1,822
)
Net loss continuing operations per share (b):
 
 
 
 
 
 
 
Basic
$
(0.27
)
 
$
(0.14
)
 
$
(0.11
)
 
$
(0.15
)
Diluted
$
(0.27
)
 
$
(0.14
)
 
$
(0.11
)
 
$
(0.15
)
Net income discontinued operations per share (b):
 
 
 
 
 
 
 
Basic
$
0.03

 
$
0.06

 
$
0.04

 
$
0.05

Diluted
$
0.03

 
$
0.06

 
$
0.04

 
$
0.05

Net loss per share (b):
 
 
 
 
 
 
 
Basic
$
(0.23
)
 
$
(0.08
)
 
$
(0.07
)
 
$
(0.11
)
Diluted
$
(0.23
)
 
$
(0.08
)
 
$
(0.07
)
 
$
(0.11
)
 
(a)
The Company’s product sales, costs of product sales, sales, marketing and support expense, income tax benefit and net loss from continuing operations for 2019 include adjustments to correct immaterial prior period accounting errors related to the implementation and application of ASC 606. See Note 11 of our consolidated financial statements for more information.
(b)
Net loss per share is computed independently for each of the quarters. Therefore, the net loss per share for the four quarters may not equal the annual net loss per share data.