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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Schedule of Immaterial Error Corrections
The effects of the correction of immaterial errors on the Consolidated Balance Sheets were as follows (in thousands):
 
December 31, 2017
 
As Previously Reported
 
Adjustment
 
As Revised
Inventories, net
$
20,496

 
$
3,841

 
$
24,337

Property and equipment, net
43,283

 
(7,142
)
 
36,141

TOTAL ASSETS
686,907

 
(3,301
)
 
683,606

Deferred tax liability, net
19,174

 
193

 
19,367

TOTAL LIABILITIES
375,895

 
193

 
376,088

Accumulated deficit
(111,939
)
 
(3,494
)
 
(115,433
)
TOTAL STOCKHOLDERS' EQUITY
$
311,012

 
$
(3,494
)
 
$
307,518


 
December 31, 2016
 
As Previously Reported
 
Adjustment
 
As Revised
Inventories, net
$
15,178

 
$
633

 
$
15,811

Property and equipment, net
40,615

 
(1,694
)
 
38,921

TOTAL ASSETS
445,453

 
(1,061
)
 
444,392

Deferred tax liability, net
30,409

 
(5
)
 
30,404

TOTAL LIABILITIES
212,517

 
(5
)
 
212,512

Accumulated deficit
(100,988
)
 
(1,056
)
 
(102,044
)
TOTAL STOCKHOLDERS' EQUITY
$
232,936

 
$
(1,056
)
 
$
231,880


The effects of the correction of immaterial errors on the Consolidated Statements of Operations were as follows (in thousands):
 
Year ended December 31, 2017
 
As Previously Reported
 
Adjustment
 
As Revised
Cost of revenue, excluding amortization
$
331,629

 
$
1,087

 
$
332,716

Operating expenses
103,973

 
1,153

 
105,126

Operating loss
(5,432
)
 
(2,240
)
 
(7,672
)
Loss before income taxes from continuing operations
(22,011
)
 
(2,240
)
 
(24,251
)
Income tax (benefit) expense, net on continuing operations
(11,060
)
 
198

 
(10,862
)
Net loss from continuing operations
(10,951
)
 
(2,438
)
 
(13,389
)
Net loss
(10,951
)
 
(2,438
)
 
(13,389
)


 

 

Basic net loss per share from continuing operations
$
(0.22
)
 
$
(0.05
)
 
$
(0.27
)
Basic net loss per share
$
(0.22
)
 
$
(0.05
)
 
$
(0.27
)
Diluted net loss per share from continuing operations
$
(0.22
)
 
$
(0.05
)
 
$
(0.27
)
Diluted net loss per share
$
(0.22
)
 
$
(0.05
)
 
$
(0.27
)

 
Year ended December 31, 2016
 
As Previously Reported
 
Adjustment
 
As Revised
Cost of revenue, excluding amortization
$
196,772

 
$
136

 
$
196,908

Operating expenses
71,434

 
382

 
71,816

Operating income (loss)
13,708

 
(518
)
 
13,190

Income (loss) before income taxes from continuing operations
4,322

 
(518
)
 
3,804

Income tax expense (benefit), net on continuing operations
2,457

 
(5
)
 
2,452

Net income (loss) from continuing operations
1,865

 
(513
)
 
1,352

Net loss
(25,728
)
 
(513
)
 
(26,241
)


 

 

Basic net earnings (loss) per share from continuing operations
$
0.05

 
$
(0.02
)
 
$
0.03

Basic net loss per share
$
(0.64
)
 
$
(0.01
)
 
$
(0.65
)
Diluted net earnings (loss) per share from continuing operations
$
0.05

 
$
(0.02
)
 
$
0.03

Diluted net loss per share
$
(0.63
)
 
$
(0.01
)
 
$
(0.64
)

The effects of the correction of immaterial errors on the Consolidated Statements of Cash Flows were as follows (in thousands):
 
Year ended December 31, 2017
 
As Previously Reported
 
Adjustment
 
As Revised
Net loss
$
(10,951
)
 
$
(2,438
)
 
$
(13,389
)
Depreciation and amortization expense
20,363

 
1,747

 
22,110

Deferred taxes
(11,093
)
 
198

 
(10,895
)
Inventory, net
(5,318
)
 
(3,209
)
 
(8,527
)
Net cash provided (used) by operating activities
10,202

 
(3,702
)
 
6,500

Purchase of property and equipment
(10,121
)
 
3,702

 
(6,419
)
Net cash (used) provided in investing activities
$
(245,977
)
 
$
3,702

 
$
(242,275
)

 
Year ended December 31, 2016
 
As Previously Reported
 
Adjustment
 
As Revised
Net loss
$
(25,728
)
 
$
(513
)
 
$
(26,241
)
Depreciation and amortization expense
13,578

 
277

 
13,855

Deferred taxes
1,967

 
(5
)
 
1,962

Inventory, net
(663
)
 
(633
)
 
(1,296
)
Net cash provided (used) by operating activities
23,095

 
(874
)
 
22,221

Purchase of property and equipment
(18,410
)
 
874

 
(17,536
)
Net cash (used) provided in investing activities
$
(4,688
)
 
$
874

 
$
(3,814
)
Schedule of Goodwill
A summary of the changes to goodwill is as follows (in thousands):
Goodwill as of December 31, 2016
$
290,710

Acquisition
164,487

Goodwill as of December 31, 2017
$
455,197

Goodwill as of December 31, 2018
$
455,197
Calculation of Basic and Diluted Net Income Per Share
The following table presents the calculation of basic and diluted net loss per share (in thousands except per share amounts):
 
December 31,
2018
 
December 31,
2017
 
December 31,
2016
Net (loss) income from continuing operations
$
(22,280
)
 
$
(13,389
)
 
$
1,352

Net loss on discontinued operations
—

 
—

 
(27,593
)
Net loss
$
(22,280
)
 
$
(13,389
)
 
$
(26,241
)
 
 
 
 
 
 
Weighted-average shares – basic
49,833

 
48,921

 
40,501

Effect of dilutive potential common shares
—

 
—

 
511

Weighted-average shares – diluted
49,833

 
48,921

 
41,012

 
 
 
 
 
 
Net (loss) income per share from continuing operations – basic
$
(0.45
)
 
$
(0.27
)
 
$
0.03

Net loss per share from discontinued operations – basic
—

 
—

 
(0.68
)
Net loss per share – basic
$
(0.45
)
 
$
(0.27
)
 
$
(0.65
)
 
 
 
 
 
 
Net (loss) income per share from continuing operations – diluted
$
(0.45
)
 
$
(0.27
)
 
$
0.03

Net loss per share from discontinued operations – diluted
—

 
—

 
(0.67
)
Net loss per share – diluted
$
(0.45
)
 
$
(0.27
)
 
$
(0.64
)
 
 
 
 
 
 
Anti-dilutive share-based awards, excluded
3,647

 
2,543

 
2,499
Impact of Adoption of ASC 606
As a result of applying the modified retrospective method to adopt the new guidance, the following adjustments were made on the Consolidated Balance Sheets as of January 1, 2018:
 
Year ended
 
 
 
Adjusted
 
December 31, 2017
 
Adjustments
 
January 1, 2018
 
(in thousands)
Assets:
 
 
 
 
 
Unbilled receivables, net
$
37,785

 
$
1,166

 
$
38,951

Inventories, net
24,337

 
(292
)
 
24,045

Prepaid expenses
2,266

 
(403
)
 
1,863

Liabilities:
 

 


 
 

Accrued expenses
$
15,545

 
$
49

 
$
15,594

Deferred revenue
6,090

 
1,743

 
7,833

Deferred tax liability, net
19,367

 
(325
)
 
19,042

Equity:


 


 


Accumulated deficit
$
(115,433
)
 
$
(996
)
 
$
(116,429
)
The following tables compare the reported Consolidated Balance Sheets and Consolidated Statements of Operations as of December 31, 2018 and for the year ended December 31, 2018, respectively, to the pro-forma amounts had ASC 605 been in effect:
 
December 31, 2018
 
As Reported
(ASC 606)
 
As Adjusted
(ASC 605)
 
(in thousands)
Assets:
 
 
 
Unbilled receivables, net
$
59,357

 
$
59,825

Inventories, net
24,111

 
24,447

Prepaid expenses
2,797

 
2,395

Liabilities:
 

 
 

Accrued expenses
$
17,236

 
$
16,834

Deferred revenue
1,622

 
3,365

Deferred tax liability, net
13,955

 
13,722

Equity:


 


Accumulated deficit
$
(138,709
)
 
$
(139,415
)

 
Year ended December 31, 2018
 
As Reported
(ASC 606)
 
As Adjusted
(ASC 605)
 
(in thousands, except per share amounts)
Revenues
$
506,840

 
$
505,566

Cost of revenue, excluding amortization
374,838

 
374,502

Operating income
7,916

 
6,978

Loss before income taxes
(27,014
)
 
(27,952
)
Income tax benefit, net
(4,734
)
 
(4,967
)
Net loss
(22,280
)
 
(22,985
)



 


Loss per share
 

 
 

Basic
$
(0.45
)
 
$
(0.46
)
Diluted
$
(0.45
)
 
$
(0.46
)