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SELECTED QUARTERLY FINANCIAL DATA Quarterly Financial Data (Tables)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
SELECTED QUARTERLY FINANCIAL DATA (unaudited)

 
 
For The Year Ended December 31, 2015
 
 
First
quarter
 
Second 
quarter
 
Third
quarter
 
Fourth 
quarter
Revenue
 
$
124,317

 
$
122,743

 
$
110,028

 
$
106,109

Gross margin
 
$
47,904

 
$
50,222

 
$
45,145

 
$
44,439

Operating income (loss)
 
$
(6,716
)
 
$
13,643

 
$
(3,826
)
 
$
140

Income (loss) from continuing operations
 
$
(6,654
)
 
$
12,774

 
$
(2,029
)
 
$
(2,484
)
Income (loss) from discontinued operations
 
$
(184
)
 
$
1,103

 
$
(55
)
 
$
(142
)
Net income (loss)
 
$
(6,838
)
 
$
13,877

 
$
(2,084
)
 
$
(2,626
)
Basic and diluted earnings (loss) per share from continuing operations
 
$
(0.20
)
 
$
0.38

 
$
(0.06
)
 
$
(0.07
)
Basic and diluted earnings (loss) per share from discontinued operations
 
$
(0.01
)
 
$
0.03

 
$
—

 
$
—

Basic and diluted earnings (loss) per share
 
$
(0.21
)
 
$
0.41

 
$
(0.06
)
 
$
(0.08
)
Basic weighted average shares outstanding (in thousands)
 
33,053

 
33,525

 
34,687

 
34,274

Diluted weighted average shares outstanding (in thousands)
 
33,053

 
34,007

 
34,687

 
34,274

Common stock equivalents and outstanding stock options excluded from the calculation of diluted earnings (loss) per share (in thousands)
 
1,903

 
979

 
1,124

 
886

 
 
 
 
 
 
 
 
 
 
 
For The Year Ended December 31, 2014
 
 
First
quarter
 
Second 
quarter
 
Third
quarter
 
Fourth 
quarter
Revenue
 
$
144,167

 
$
151,070

 
$
149,278

 
$
136,677

Gross margin
 
$
54,029

 
$
59,871

 
$
55,687

 
$
53,258

Operating income (loss)
 
$
(3,374
)
 
$
(2,865
)
 
$
(5,113
)
 
$
(6,134
)
Income (loss) from continuing operations
 
$
(4,112
)
 
$
(3,565
)
 
$
(4,570
)
 
$
(3,539
)
Income (loss) from discontinued operations
 
$
(432
)
 
$
(809
)
 
$
(2,449
)
 
$
6,282

Net income (loss)
 
$
(4,544
)
 
$
(4,374
)
 
$
(7,019
)
 
$
2,743

Basic and diluted earnings (loss) per share from continuing operations
 
$
(0.13
)
 
$
(0.11
)
 
$
(0.14
)
 
$
(0.11
)
Basic and diluted earnings (loss) per share from discontinued operations
 
$
(0.01
)
 
$
(0.02
)
 
$
(0.07
)
 
$
0.19

Basic and diluted earnings (loss) per share
 
$
(0.14
)
 
$
(0.13
)
 
$
(0.21
)
 
$
0.08

Basic and diluted weighted average shares outstanding (in thousands)
 
32,641

 
32,752

 
32,910

 
32,995

Common stock equivalents and outstanding stock options excluded from the calculation of diluted earnings (loss) per share (in thousands)
 
1,274

 
1,207

 
1,176

 
1,681