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Segment Information
 12 Months Ended
Dec. 31, 2012
Segment Reporting [Abstract]  
Segment Information
Segment Information
 
Our management does not capture full financial information or utilize operating segments to make decisions about the business. As discussed in Note 1, management believes that it operates in one business segment. However, our management does rely on the before tax components in the tables below as major categories useful in managing the business.  All sales and assets are currently located in continental United Sates.


For the Year Ended December 31, 2012  
 
Sales
 
Rental
 
Service & Maintenance
 
Corporate
 
Total
 
(in thousands of dollars)
Revenue
$
36,375

 
$
56,477

 
$
870

 
$
—

 
$
93,722

Operating costs and expenses
25,816

 
23,737

 
354

 
23,600

 
73,507

Other income/(expense)
—

 
—

 
—

 
(4
)
 
(4
)
Income (loss) before provision for income taxes
$
10,559

 
$
32,740

 
$
516

 
$
(23,604
)
 
$
20,211



For the Year Ended December 31, 2011
 
Sales
 
Rental
 
Service & Maintenance
 
Corporate
 
Total
 
(in thousands of dollars)
Revenue
$
15,419

 
$
48,619

 
$
1,120

 
$
—

 
$
65,158

Operating costs and expenses
9,194

 
20,742

 
458

 
19,904

 
50,298

Other income/(expense)
—

 
—

 
—

 
769

 
769

Income (loss) before provision for income taxes
$
6,225

 
$
27,877

 
$
662

 
$
(19,135
)
 
$
15,629





For the Year Ended December 31, 2010
 
Sales
 
Rental
 
Service & Maintenance
 
Corporate
 
Total
 
(in thousands of dollars)
Revenue
$
12,370

 
40,670

 
868

 
$
—

 
$
53,908

Operating costs and expenses
8,010

 
16,205

 
535

 
17,794

 
42,544

Other income/(expense)
—

 
—

 
—

 
(64
)
 
(64
)
Income (loss) before provision for income taxes
$
4,360

 
$
24,465

 
$
333

 
$
(17,858
)
 
$
11,300