Fair Value of Financial Assets and Financial Liabilities (Level 3 Reconciliation) (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance			$ 829,000
Ending balance			829,000
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance			(1,521,000)
Ending balance			(1,521,000)
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		(227,000)	(1,521,000)
Included in earnings	0	0
Included in other comprehensive income	(325,000)	(969,000)
Purchases:	0	0
Sales:	0	0
Issuances:	0	0
Settlements	0	0
Transfers in/(out) of Level 3	0	0
Ending balance		(1,196,000)	(1,521,000)
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held as of December 31, 2012:	0	0
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		787,000	829,000
Included in earnings	0	0
Included in other comprehensive income	44,000	(145,000)
Purchases:	143,000	0
Sales:	0	0
Issuances:	0	0
Settlements	0	0
Transfers in/(out) of Level 3	0	0
Ending balance		642,000	829,000
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held as of December 31, 2012:	$ 0	$ 0