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VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Notes)
 12 Months Ended
Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts Disclosure
VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Years ended December 31, 2013, 2012 and 2011
(in thousands)

Description
2013
 
2012
 
2011
Allowance for doubtful accounts:
 
 
 
 
 
Balance, beginning of period
$
225

 
225

 
235

Charged to expense
442

 
449

 
327

Accounts written off
(620
)
 
(526
)
 
(422
)
Recoveries of accounts written off
123

 
77

 
85

Balance, end of period
$
170

 
225

 
225

Reserve for litigation and claims:
 
 
 
 
 
Balance, beginning of period
$
281

 
240

 
449

Charged to expense
220

 
118

 
121

Revision to accrual, due to settlements
(105
)
 
(38
)
 
(182
)
Payments
(260
)
 
(39
)
 
(148
)
Balance, end of period
$
136

 
281

 
240