Significant Accounting Policies Offsetting Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Deposits Paid for Securities Borrowed, at Carrying Value	$ 0	$ 0
Gross Amount of assets as Offset in Statement of Financial Position	0	0
Securities Borrowed	18,041	18,671
Financial Instruments, assets	0	0
Swap A [Member]
Deposits Paid for Securities Borrowed, at Carrying Value	0	0
Gross Amount of assets as Offset in Statement of Financial Position	0	0
Net amount of financial assets	9,130	9,408
Securities Borrowed	9,130	9,408
Financial Instruments, assets	0	0
Swap B [Member]
Deposits Paid for Securities Borrowed, at Carrying Value	0	0
Gross Amount of assets as Offset in Statement of Financial Position	0	0
Net amount of financial assets	8,911	9,263
Securities Borrowed	8,911	9,263
Financial Instruments, assets	0	0
Fair Value, Inputs, Level 2 [Member]
Interest Rate Swap Agreement Fair Value Disclosure	$ 18,041	$ 18,671