Summary of Significant Accounting Policies (Details 2) (USD $)															6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 Doubletree Guest Suites Times Square	Mar. 31, 2011 Doubletree Guest Suites Times Square	Jan. 31, 2011 Doubletree Guest Suites Times Square	Jun. 30, 2011 Entity that owns Hilton San Diego Bayfront	Apr. 30, 2011 Entity that owns Hilton San Diego Bayfront	Jun. 30, 2011 Robert A. Alter	Jun. 30, 2011 Robert A. Alter Level 2	Dec. 31, 2010 Robert A. Alter Level 2	Jun. 30, 2011 Total at the end of the period	Dec. 31, 2010 Total at the end of the period	Jun. 30, 2011 Level 2	Dec. 31, 2010 Level 2	Jun. 30, 2011 Level 3	Dec. 31, 2010 Level 3
Fair value of assets and liabilities measured at fair value on a recurring and non-recurring basis
Ownership interest acquired (as a percent)			62.00%	62.00%	62.00%	75.00%	75.00%
Split life insurance policy								$ 5,000,000
Percentage of debt having fixed interest rates (as a percent)	69.60%	100.00%
Carrying value of secured debt	1,671,545,000	1,131,530,000
Weighted average cost of capital, low end of range (as a percent)															6.00%
Weighted average cost of capital, high end of range (as a percent)															7.00%
Fair value of debt															1,600,000,000	1,100,000,000
Assets:
Other real estate of discontinued operations, net	88,000	896,000									88,000				88,000
Interest rate cap derivative agreements											22,000		22,000
Other real estate, net	11,640,000	11,116,000										2,506,000				2,506,000
Life insurance policy									1,931,000	1,868,000	1,931,000	1,868,000	1,931,000	1,868,000
Goodwill												4,673,000				4,673,000
Total assets											2,041,000	9,047,000	1,953,000	1,868,000	88,000	7,179,000
Liabilities:
Retirement benefit agreement											1,931,000	1,868,000	1,931,000	1,868,000
Interest rate swap derivative agreements											501,000		501,000
Total liabilities											$ 2,432,000	$ 1,868,000	$ 2,432,000	$ 1,868,000