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Supplementary Information Supplementary Information (Balance Sheet Disclosures) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Other Current Assets:    
Deferred taxes $ 2,779 $ 1,220
Other current assets 746 703
Total other current assets 3,525 1,923
Other Liabilities:    
Liabilities associated with uncertain tax positions 7,832 7,748
Income taxes payable 1,351 3,585
Dividends payable on our junior subordinated debt 529 529
Other liabilities 227 1,205
Total other liabilities 9,939 13,067
Accrued Liabilities:    
Accrued salaries and wages 1,882 1,489
Accrued incentive compensation 4,654 4,390
Accrued vacation 1,979 1,935
Accrued insurance 2,778 2,420
Accrued ad valorem and franchise taxes 383 1,107
Other accrued liabilities 1,178 937
Total accrued liabilities $ 12,854 $ 12,278