Commitments, Contingencies And Legal Proceedings Schedule of approximate minimum annual rental payments under non-cancelable leases (Details) (USD $)	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
2013	$ 9,551,000
2014	7,047,000
2015	5,429,000
2016	3,011,000
2017	1,736,000
Thereafter	955,000
Total	27,729,000
Future receipts from subleases, 2013	500,000
Future receipts from subleases, 2014	200,000
Future receipts from subleases, 2015	$ 100,000