Lease Commitments (Textual) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) ft²	Dec. 31, 2014 USD ($) ft²	Dec. 31, 2013 USD ($)	Feb. 29, 2016 ft²	Dec. 30, 2014 ft²
Long-term Purchase Commitment [Line Items]
Rent expense, net | $	$ 4.6	$ 6.0	$ 6.3
Area of principal executive office space		58,000			132,000
Sublet to independent third party [Member]
Long-term Purchase Commitment [Line Items]
Area of principal executive office space	0
Sublet to independent third party [Member] | Scenario, Forecast [Member]
Long-term Purchase Commitment [Line Items]
Area of principal executive office space				3,000