Schedule II - Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at December 31, 2012	$ 3,852,000	$ 5,152,000	$ 6,691,000
Additions	1,949,000	1,088,000	837,000
Deductions	(2,812,000)	(2,388,000)	(2,376,000)
Balance at December 31, 2013		3,852,000	5,152,000
Allowance for Loan and Lease Losses [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at December 31, 2012	123,000	8,196,000	8,196,000
Additions	0	0	0
Deductions	(123,000)	(8,073,000)	0
Balance at December 31, 2013	$ 0	$ 123,000	$ 8,196,000