Liability Associated with Non-renewal of Senior Officers' Contracts (Details) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2010
Liability Associated with Non-renewal of Senior Officers' Contracts [Abstract]
Costs related to non-renewal of senior officer contract	$ 0	$ 1,194,000	$ 0	$ 1,194,000	$ 0	$ 2,000,000
Loss Contingencies [Line Items]
Liability associated with non-renewal of contract, Chief Operating Officer	1,192,000			1,192,000
Liabilities associated with former chief executive officer	132,000			132,000
Restricted stock [Member]
Loss Contingencies [Line Items]
Unearned compensation related to nonvested restricted shares, Senior officer	144,000			144,000
Senior Officer [Member] | Restricted stock [Member]
Loss Contingencies [Line Items]
Unearned compensation related to nonvested restricted shares, Senior officer	$ 29,000			$ 29,000