Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and Cash Equivalents and Restricted Cash	Cash and Cash Equivalents and Restricted Cash. Cash equivalents consist of liquid investments with an original maturity of three months or less. Cash equivalents are stated at cost, which approximates fair value. Restricted cash includes funds the Company is required to post as cash collateral or transfer to escrow accounts and its release is subject to contractual requirements and time restrictions. The cash may not be released to the Company without the consent of the counterparties, which is generally at their discretion. The cash could also be subject to the indemnification of losses incurred by the counterparties.
Marketable Securities	Marketable Securities – Available-for-Sale. Marketable securities are stated at fair value in accordance with the relevant accounting guidance. The Company determines the fair value of its marketable securities based on pricing from our third party service provider and market prices from industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs), such as yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures. To the extent observable inputs are not available, as is the case with the Company's mortgage securities – available-for-sale, the Company estimates fair value using significant unobservable inputs (Level 3 inputs). The methods and processes used to estimate the fair value of the Company's mortgage securities are discussed further below. Mortgage securities – available-for-sale represent beneficial interests the Company retains in securitization transactions which consist of residual interests (the “residual securities”) in certain components of the cash flows of the underlying mortgage loans to the securitization trusts. As payments are received on the residual securities, the payments are applied to the cost basis of the related mortgage securities. Each period, the accretable yield for each mortgage security is evaluated and, to the extent there has been a change in the estimated cash flows, it is adjusted and applied prospectively. The accretable yield is recorded as interest income with a corresponding increase to the carrying basis of the mortgage security. The Company estimates the fair value of its residual securities retained based on the present value of future expected cash flows to be received. Management’s best estimate of key assumptions, including credit losses, prepayment speeds, market discount rates and forward yield curves commensurate with the risks involved, are used in estimating future cash flows. All of the Company's available-for-sale securities are reported at their estimated fair value with unrealized gains and losses reported in accumulated other comprehensive income. To the extent the cost basis of these securities exceeds the estimated fair value and the unrealized loss is considered to be other than temporary, an impairment charge is recognized and the amount recorded in accumulated other comprehensive income or loss is reclassified to earnings as a realized loss. The Company uses the specific identification method in computing realized gains or losses.
Earnings per Share	Earnings Per Share (“EPS”). Basic EPS excludes dilution and is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. Diluted EPS is calculated assuming all options, nonvested shares and performance-based awards of the Company's common stock have been exercised, unless the exercise would be antidilutive.
Leases [Policy Text Block]	Leases. The Company categorizes leases as either operating or capital at the inception of the lease. Certain of the Company's lease agreements provide for scheduled rent increases during the lease term, rent holidays, or other incentives. Rent expense is recognized on a straight-line basis over the term of the lease from the time at which the Company takes possession of the property without regard to deferred payment terms, such as rent holidays. Additionally, incentives received are treated as a reduction of costs over the term of the lease.
Income Taxes	Income Taxes. The Company had a gross deferred tax asset of $282.1 million and $269.6 million as of December 31, 2015 and 2014, respectively. In determining the amount of deferred tax assets to recognize in the financial statements, the Company evaluates the likelihood of realizing such benefits in future periods. The income tax guidance requires the recognition of a valuation allowance if it is more likely than not that all or some portion of the deferred tax asset will not be realized. Income tax guidance indicates the more likely than not threshold is a level of likelihood that is more than 50%. Under the income tax guidance, companies are required to identify and consider all available evidence, both positive and negative, in determining whether it is more likely than not that all or some portion of its deferred tax assets will not be realized. Positive evidence includes, but is not limited to the following: cumulative earnings in recent years, earnings expected in future years, excess appreciated asset value over the tax basis and positive industry trends. Negative evidence includes, but is not limited to the following: cumulative losses in recent years, losses expected in future years, a history of operating losses or tax credit carryforwards expiring, and adverse industry trends. The weight given to the potential effect of negative and positive evidence should be commensurate with the extent to which it can be objectively verified. The more negative evidence that exists, the more positive evidence is required to counter to support a conclusion that a valuation allowance is not needed for all or some of the deferred tax assets. Cumulative losses in recent years are significant negative evidence that is difficult to overcome when determining the need for a valuation allowance. Similarly, cumulative earnings in recent years represent significant positive objective evidence. If the weight of the positive evidence is sufficient to support a conclusion that it is more likely than not that a deferred tax asset will be realized, a valuation allowance should not be recorded. The Company examines and weighs all available evidence (both positive and negative and both historical and forecasted) in the process of determining whether it is more likely than not that a deferred tax asset will be realized. The Company considers the relevance of historical and forecasted evidence when there has been a significant change in circumstances. Additionally, the Company evaluates the realization of its recorded deferred tax assets on an interim and annual basis. The Company does not record a full valuation allowance if the weight of the positive evidence exceeds the negative evidence and is sufficient to support a conclusion that it is more likely than not that its deferred tax asset will be realized. If a valuation allowance is necessary, the Company considers all sources of taxable income in determining the amount of valuation allowance to be recorded. Sources of taxable income identified in the income tax guidance include the following: 1) taxable income in prior carryback year, 2) future reversals of existing taxable temporary differences, 3) future taxable income exclusive of reversing temporary differences and carryforwards, and 4) tax planning strategies. The Company currently evaluates estimates of uncertainty in income taxes based upon a framework established in the income tax accounting guidance. The guidance prescribes a recognition threshold and measurement standard for the recognition and measurement of tax positions taken or expected to be taken in a tax return. In accordance with the guidance, the Company evaluates whether a tax position will more likely than not be sustained upon examination by the appropriate taxing authority. The Company measures the amount to recognize in its financial statements as the largest amount that is greater than 50% likely of being realized upon ultimate settlement. The recognition and measurement of tax benefits is often judgmental, and determinations regarding the tax benefit can change as additional developments occur relative to the issue.
New Accounting Pronouncements	New Accounting Pronouncements In November 2015, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes, as part of its simplification initiative (i.e., the Board’s effort to reduce the cost and complexity of certain aspects of U.S. GAAP). The ASU requires entities to present deferred tax assets (DTAs) and deferred tax liabilities (DTLs) as noncurrent in a classified balance sheet. It thus simplifies the current guidance, which requires entities to separately present DTAs and DTLs as current or noncurrent in a classified balance sheet. Netting of DTAs and DTLs by tax jurisdiction is still required under the new guidance. For public business entities, the ASU is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. For all other entities, the ASU is effective for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. Early adoption is permitted for all entities. The Company has elected to early adopt this guidance during the fourth quarter of 2015 and has elected to apply the new presentation retrospectively. The impact to the prior period balance sheet as a result of the retrospective application of this guidance was a decrease in both noncurrent assets and current liabilities of approximately $1.0 million. For additional information regarding the Company's deferred tax assets and liabilities, see Note 10 to the consolidated financial statements. In January 2015, the FASB issued ASU 2015-1, Income Statement—Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items, which eliminates from GAAP the concept of an extraordinary item, which is an event or transaction that is both (1) unusual in nature and (2) infrequently occurring. Under this ASU, an entity will no longer (1) segregate an extraordinary item from the results of ordinary operations; (2) separately present an extraordinary item on its income statement, net of tax, after income from continuing operations; or (3) disclose income taxes and earnings-per-share data applicable to an extraordinary item. The ASU is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. Entities may apply the guidance prospectively or retrospectively to all prior periods presented in the financial statements. Early adoption is permitted if the guidance is applied as of the beginning of the annual period of adoption. The Company does not expect this guidance to have a significant impact on the Company’s financial statements. In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, which provides guidance on determining when and how reporting entities must disclose going-concern uncertainties in their financial statements. This new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date of issuance of the entity’s financial statements. Further, an entity must provide certain disclosures if there is “substantial doubt about the entity’s ability to continue as a going concern.” This ASU is effective for annual periods ending after December 15, 2016, and interim periods thereafter. Early adoption is permitted. The Company elected to early adopt this guidance during the fourth quarter of 2015. The adoption of this guidance did not have a significant impact on the Company's financial statements for the years ended December 31, 2015 and 2014. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This ASU applies to all contracts with customers except those that are within the scope of other topics in the FASB Accounting Standards Codification. Compared with current GAAP, this ASU also requires significantly expanded disclosures about revenue recognition. On July 9, 2015 the FASB voted to defer the effective date of this ASU by one year. Early adoption is permitted. However, entities are not allowed to adopt this ASU before the original effective date (that is, annual periods beginning after December 15, 2016). The Company is evaluating the impact of ASU 2014-09 on its consolidated financial statements and related disclosures. Upon completion of the sale of Corvisa, the Company no longer enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. As such, the Company does not currently expect this guidance to have a significant impact on the Company's financial statements. In April 2014, the FASB issued ASU 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which amends the definition of a discontinued operation in ASC 205-20 and requires entities to provide additional disclosures about discontinued operations as well as disposal transactions that do not meet the discontinued-operations criteria. The FASB issued this ASU to provide more decision-useful information and to make it more difficult for a disposal transaction to qualify as a discontinued operation. This ASU is effective prospectively for all disposals (except disposals classified as held for sale before the adoption date) or components initially classified as held for sale in periods beginning on or after December 15, 2014. The Company adopted the provisions of ASU 2014-08 beginning with the sale of Corvisa.

Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.

- Definition

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.

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- Definition

Disclosure of accounting policy for leasing arrangements (both lessor and lessee). This disclosure may address (1) lease classification (that is, operating versus capital), (2) how the term of a lease is determined (for example, the circumstances in which a renewal option is considered part of the lease term), (3) how rental revenue or expense is recognized for a lease that contains rent escalations, (4) an entity's accounting treatment for deferred rent, including that which arises from lease incentives, rent abatements, rent holidays, or tenant allowances (5) an entity's accounting treatment for contingent rental payments and (6) an entity's policy for reviewing, at least annually, the residual values of sales-type and direct-finance leases. The disclosure also may indicate how the entity accounts for its capital leases, leveraged leases or sale-leaseback transactions.

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