Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation and Qualifying Accounts Schedule II - Valuation and Qualifying Accounts

v3.3.1.900
Schedule II - Valuation and Qualifying Accounts Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
Schedule II—Valuation and Qualifying Accounts

Classifications
 
Balance at
beginning
of year
 
Charged
to cost 
and
expenses
 
Charged
to other
accounts
 
Deductions
 
Balance
at end 
of
year
Dollars in Thousands
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2015
 
 
 
 
 
 
 
 
 
 
Allowance for bad debt
 
$
11,188

 
$
341

 
$
(825
)
 
$
(2,010
)
 
$
8,694

Allowance for obsolete rig materials and supplies
 
$
530

 
—

 
$
236

 
$
(140
)
 
$
626

Deferred tax valuation allowance
 
$
9,922

 
$
40,676

 
$
507

 
$
—

 
$
51,105

Year ended December 31, 2014
 
 
 
 
 
 
 
 
 
 
Allowance for bad debt
 
$
12,853

 
$
5,248

 
$
—

 
$
(6,913
)
 
$
11,188

Allowance for obsolete rig materials and supplies
 
$
3,445

 
—

 
$
1

 
$
(2,916
)
 
$
530

Deferred tax valuation allowance
 
$
6,827

 
$
2,800

 
$
295

 
$
—

 
$
9,922

Year ended December 31, 2013
 
 
 
 
 
 
 
 
 
 
Allowance for bad debt
 
$
8,117

 
$
5,092

 
$
5,861

 
$
(6,217
)
 
$
12,853

Allowance for obsolete rig materials and supplies
 
$
312

 
$
—

 
$
3,586

 
$
(453
)
 
$
3,445

Deferred tax valuation allowance
 
$
4,805

 
$
2,010

 
$
12

 
$
—

 
$
6,827