Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Net operting loss carried forward		$ 161,500
Deferred income tax provision	1,300
Current income tax provision	4,100
Income from discontinued operations, tax	5,200
NOL expiration date	Expire in 2029
Excise tax rate	4.00%
Annual distribution of net taxable income for U.S. federal income tax not to apply to our earnings that we distribute (percent)	90.00%
Net taxable income subject to distribution (percent)	100.00%
Total Capital Loss Carryforwards
Net capital losses carried forward		121,400
Capital Loss Carryforwards Expiring 2013
Net capital losses carried forward	2,000
Capital Loss Carryforwards Expiring 2014
Net capital losses carried forward	87,400
Capital Loss Carryforwards Expiring 2015
Net capital losses carried forward	31,400
Capital Loss Carryforwards Expiring 2017
Net capital losses carried forward	$ 618