Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deferred Tax Assets:    
Costs incurred in excess of billings $ 1,867 $ 4,067
Compensation and benefits 11,100 1,633
Contingency reserves 1,995 1,834
Other 1,931 3,324
Net operating losses 224 0
Total deferred tax assets 17,117 10,858
Deferred Tax Liabilities:    
Goodwill (77,142) (74,629)
Property, Plant and Equipment (2,047) (2,577)
Unbilled receivables (38,679) (32,854)
Total deferred tax liabilities $ (117,868) $ (110,060)