Fair Value of Assets and Liabilities (Details) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014
TA
Fair Value of Assets and Liabilities
Shares included in investment securities	3,420,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | TA
Fair Value of Assets and Liabilities
Shares included in investment securities	3,420,000
Historical cost of securities	$ 17,407
Recurring | Fair Value
Fair Value of Assets and Liabilities
Investment securities	30,370
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value of Assets and Liabilities
Investment securities	$ 30,370