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Income Taxes - Additional Information (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2013
Foreign Tax Authority
Dec. 31, 2014
Forecast
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]          
Effective income tax rate 15.60% 30.50%      
Effective income tax rate, discontinued operations 29.10% 36.80%      
Federal statutory income tax rate 35.00%        
Deferred tax assets $ 67,700,000   $ 77,000,000    
Valuation allowance     12,400,000 10,900,000  
Release of valuation allowance         3,600,000
Liability for Uncertain Tax Positions, Continuing Operations, Excluding Interest and Penalties 1,100,000   736,000    
Accrued Interest And Penalties For Continued Operations 56,000   20,000    
Disposal Group, Including Discontinued Operation, Accrued Income Taxes Payable 636,000   636,000    
Accrued Interest and Penalties for Discontinued Operations 458,000   450,000    
Liability for Uncertain Tax Positions, Noncurrent $ 2,200,000   $ 1,800,000