Income Taxes (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 01, 2015	Dec. 31, 2014
Net operating loss carryforwards
Effective income tax rate (as a percent)	11.80%	36.20%
Bargain purchase gain	$ 82,816,000
Income tax benefit	(15,420,000)	(14,354,000)
Valuation allowance on deferred tax assets for net operating loss carryforwards	4,100,000
Valuation allowance on remainder of deferred tax assets	0			0
Uncertain tax positions
Unrecognized Tax Benefits	1,100,000
Unrecognized tax benefits if recognized would favorably impact the effective tax rate	700,000
Internal Revenue Service (IRS)
Net operating loss carryforwards
Net operating loss carryforwards	93,200,000			45,500,000
SWS
Net operating loss carryforwards
Tax on bargain purchase gain	0		0
Bargain purchase gain	82,800,000		82,816,000
Income tax benefit	2,100,000
Increase in the valuation allowance	$ 2,200,000