Disclosures About Fair Value of Financial Instruments (Details) Fair Value of Assets on a Nonrecurring Basis (USD $)	Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Disposal group, carrying value	$ 21,200,000
Net assets of insurance segment	6,044,000	[1]
Impairment of disposal group	5,690,000
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Net assets of insurance segment	$ 15,489,000	[1]

[1] As of September 30, 2012 the Company had a non-recurring fair value measurement for its insurance segment asset with a carrying amount of $21.2 million that was written down to its implied fair value of $15.5 million, resulting in an impairment charge of $5.7 million, which was included in the nine months ended September 30, 2012. The implied fair value was calculated using the assumed proceeds less selling costs from the pending sale of the insurance segment companies.