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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Property, Plant and Equipment [Table Text Block]
Following are the major classes of depreciable assets and their estimated useful lives:
 
Year Ended December 31,
 
2014
 
2013
Land, building and improvements
$
11,823

 
$
11,823

Office furnishings, leasehold improvements, computer equipment and computer software
24,281

 
22,563

Transportation and construction equipment
156

 
163

Property and equipment
36,260

 
34,549

Accumulated depreciation
(24,771
)
 
(24,013
)
Property and equipment, net
$
11,490

 
$
10,536

 
Estimated Useful Lives
Building and improvements
35 years
Office furnishings, leasehold improvements, computer equipment and computer software
3-7 years
Transportation and construction equipment
5-7 years
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
The summary of capitalized interest for the years ended December 31, 2014, 2013 and 2012 is as follows:
 
Year Ended December 31,
(In thousands)
2014
 
2013
 
2012
Capitalized interest, beginning of period
$
13,802

 
$
15,376

 
$
18,869

Interest capitalized to inventory
17,937

 
13,601

 
9,975

Capitalized interest charged to cost of sales
(16,443
)
 
(15,175
)
 
(13,468
)
Capitalized interest, end of year
$
15,296

 
$
13,802

 
$
15,376

 
 
 
 
 
 
Interest incurred
$
31,302

 
$
29,539

 
$
26,046