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Consolidation and Basis of Presentation and Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2013
Notes To Financial Statements [Abstract]  
Earnings Per Common Share
(dollars and units in thousands, except per unit amounts)
Three months ended June 30,
 
Six months ended June 30,
 
2013
 
2012
 
2013
 
2012
Units Outstanding
 
 
 
 
 
 
 
Weighted average common units - basic and diluted
41,841

 
40,392

 
41,679

 
39,763

 
 
 
 
 
 
 
 
Calculation of Earnings per Unit - basic and diluted
 

 
 

 
 

 
 

Income from continuing operations
$
15,411

 
$
14,365

 
$
34,436

 
$
26,419

Income from continuing operations attributable to noncontrolling interests
51

 
68

 
162

 
147

Income from continuing operations available for common unitholders, adjusted
$
15,360

 
$
14,297

 
$
34,274

 
$
26,272

 
 
 
 
 
 
 
 
Income from discontinued operations
$
32,496

 
$
14,056

 
$
33,189

 
$
24,486

Income from discontinued operations attributable to noncontrolling interests
109

 
67

 
157

 
136

Income from discontinued operations available for common unitholders, adjusted
$
32,387

 
$
13,989

 
$
33,032

 
$
24,350

 
 
 
 
 
 
 
 
Earnings per unit - basic and diluted:
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.37

 
$
0.35

 
$
0.82

 
$
0.66

Income from discontinued operations available for common unitholders
0.77

 
0.35

 
0.79

 
0.61

Net income available for common unitholders
$
1.14

 
$
0.70

 
$
1.61

 
$
1.27