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Quarterly Results (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2012
Selected Quarterly Financial Information [Abstract]  
Schedule of Quarterly Financial Information
The following is a summary of quarterly results of operations (in thousands, except per share amounts):
 
1st
Quarter
 
2nd
Quarter
 
3rd
Quarter
 
4th
Quarter
2012
 
 
 
 
 
 
 
Revenues from continuing operations
$
145,506

 
$
153,554

 
$
153,826

 
$
154,552

Net earnings from continuing operations
6,662

 
11,219

 
11,556

 
12,211

Net loss from discontinued operations
(230
)
 
(160
)
 
(186
)
 
(198
)
Weighted average shares:
 
 
 
 
 
 
 
Basic
63,431

 
63,431

 
63,456

 
63,525

Diluted
64,374

 
64,393

 
64,667

 
64,244

Earnings per share from continuing operations
 
 
 
 
 
 
 
Basic
$
0.11

 
$
0.18

 
$
0.18

 
$
0.19

Diluted
$
0.10

 
$
0.17

 
$
0.18

 
$
0.19

2011
 
 
 
 
 
 
 
Revenues from continuing operations
$
175,127

 
$
193,061

 
$
195,480

 
$
166,465

Net earnings (loss) from continuing operations
2,881

 
12,280

 
(4,826
)
 
13,530

Net earnings (loss) from discontinued operations
(117
)
 
19

 
24

 
(599
)
Weighted average shares:
 
 
 
 
 
 
 
Basic
63,131

 
63,333

 
63,334

 
63,336

Diluted
63,936

 
64,172

 
63,334

 
64,109

Earnings (loss) per share from continuing operations
 
 
 
 
 
 
 
Basic
$
0.04

 
$
0.19

 
$
(0.08
)
 
$
0.21

Diluted
$
0.04

 
$
0.19

 
$
(0.08
)
 
$
0.21