Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value Measurements
Transfers of assets from level 1 to level 2	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Transfers of assets from level 2 to level 1	0	0	0	0	0	0
Transfers of liabilities from level 1 to level 2	0	0	0	0	0	0
Transfers of liabilities from level 2 to level 1	0	0	0	0	0	0
Changes in Fair Value for Assets and Liabilities Reported at Fair Value under Fair Value Option
Net Gains (Losses) from Sale of Loans	106,054	142,531	185,165	270,127	457,531	50,384
Other Noninterest Income	17,203	9,453	34,194	16,760	44,670	8,573	6,785
Loans held for sale
Changes in Fair Value for Assets and Liabilities Reported at Fair Value under Fair Value Option
Net Gains (Losses) from Sale of Loans	35,651	(36,203)	40,169	(41,641)	(19,353)	(3,297)
Total Changes in Fair Value	35,651	(36,203)	40,169	(41,641)	(19,353)	(3,297)
Mortgage servicing asset
Changes in Fair Value for Assets and Liabilities Reported at Fair Value under Fair Value Option
Net Gains (Losses) from Sale of Loans	(1,438)	501	920	726	18,069	190
Total Changes in Fair Value	(1,438)	501	920	726	18,069	190
Time deposits
Changes in Fair Value for Assets and Liabilities Reported at Fair Value under Fair Value Option
Other Noninterest Income		4		12	12	7
Total Changes in Fair Value		$ 4		$ 12	$ 12	$ 7

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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Represents the total of noninterest income derived from certain activities and assets including (for example): (1) venture capital investments; (2) bank owned life insurance; (3) foreign currency transactions; and (4) mortgage servicing rights.

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