Subordinated Debentures Held by Subsidiary Trusts Subordinated Borrowings (Details) (USD $) In Thousands, unless otherwise specified				3 Months Ended		3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Junior Subordinated Deferrable Interest Debenture Issues by MWFC MWF Statutory Trust III	Sep. 30, 2014 Junior Subordinated Deferrable Interest Debenture Issues by MWFC MWF Statutory Trust III London Interbank Offered Rate (LIBOR)	Sep. 30, 2014 Junior Subordinated Deferrable Interest Debenture Issues by MWFC MWF Statutory Trust IV	Sep. 30, 2014 Junior Subordinated Deferrable Interest Debenture Issues by MWFC MWF Statutory Trust IV London Interbank Offered Rate (LIBOR)
Subordinated Borrowing [Line Items]
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	$ 102,916	$ 82,477	$ 6,006		$ 14,433
Debt Instrument, Basis Spread on Variable Rate				3.10%		1.85%
Debt Instrument, Interest Rate, Effective Percentage			3.33%		2.08%