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Depreciation, Amortization and Accretion
 6 Months Ended
Jun. 30, 2016
Depreciation, Amortization And Accretion [Abstract]  
Depreciation, Amortization and Accretion
Depreciation, Amortization and Accretion — The total depreciation, amortization and accretion expenses related primarily to property and equipment, amortizable intangible assets, and asset retirement obligations. For the three months ended June 30, 2016 and 2015 total depreciation, amortization and accretion expenses were $3.2 million and $3.4 million, respectively, and for the six months ended June 30, 2016 and 2015 were $6.6 million and $7.2 million, respectively. The consolidated expenses consisted of the following for the periods stated:
 
 
For the Three Months Ended June 30,
 
For the Six Months Ended June 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(Dollars in Thousands)
Depreciation Expense
 
$
2,044

 
$
2,162

 
$
4,101

 
$
4,369

Amortization Expense
 
1,035

 
1,120

 
2,146

 
2,495

Accretion Expense
 
156

 
166

 
311

 
331

Total
 
$
3,235

 
$
3,448

 
$
6,558

 
$
7,195