Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Federal
Dec. 31, 2012
Federal
Dec. 31, 2013
State
Dec. 31, 2012
State
Dec. 31, 2013
Germany
Dec. 31, 2013
United Kingdom
Dec. 31, 2013
Canada
Dec. 31, 2013
AIA Purchase Agreement
Mar. 31, 2013
AIA Purchase Agreement
Dec. 31, 2013
IFES Acquisition Corp Limited
Oct. 18, 2013
IFES Acquisition Corp Limited
Dec. 31, 2013
Domestic Deferred Tax Assets
Dec. 31, 2012
Domestic Deferred Tax Assets
Dec. 31, 2013
Foreign Deferred Tax Assets
Dec. 31, 2012
Foreign Deferred Tax Assets
Valuation Allowance [Line Items]                                    
Federal statutory tax rate 35.00%                                  
Statutory tax rate           2.00%   33.00% 23.00% 27.00%                
Business combination, deferred tax liabilities, net                     $ 22,200,000   $ 7,000,000 $ 6,200,000        
Valuation allowance 50,782,000 39,122,000 28,480,000                       48,900,000 39,100,000 1,900,000 0
Operating loss carryforwards       102,200,000 81,000,000 58,900,000 54,200,000                      
Business acquisition, uncertain tax positions 3,200,000                     3,200,000            
Liability for uncertain tax positions 3,400,000                                  
Unrecognized tax benefits 2,831,000 0                                
Accrued interest on unrecognized tax benefits 600,000                                  
Uncertain tax positions, if reversed, would result in a tax benefit $ 1,200,000