Summary of Significant Accounting and Reporting Policies - Basis of Presentation - Additional Info. (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Jan. 01, 2015	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement
Bargain purchase gain			$ 81,289	$ 12,585
SWS
Error Corrections and Prior Period Adjustments Restatement
Bargain purchase gain	$ 81,289
SWS | Scenario, Previously Reported
Error Corrections and Prior Period Adjustments Restatement
Bargain purchase gain		$ 82,800
SWS | Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement
Bargain purchase gain		$ 1,500