Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND ACCOUNTING POLICIES Schedule of Allowance for Doubtful Accounts (Details)

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NATURE OF OPERATIONS AND ACCOUNTING POLICIES Schedule of Allowance for Doubtful Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
     
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 2,668 $ 59 $ 205
Additional allowances 764 2,798 20
Write-offs and recoveries (331) (189) (166)
Balance at end of period $ 3,101 $ 2,668 $ 59