Face (par) amount of debt instrument at time of issuance.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt premium.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Debt Senior unsecured debentures (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Jul. 14, 2016	Oct. 15, 2015	Jan. 05, 2015
Debt Instrument [Line Items]
Senior Notes			$ 191,741
Debt Instrument, Face Amount			$ 180,000
Debt Instrument, Interest Rate, Stated Percentage			4.07%	10.25%	4.81%
Notes Payable	$ 199,316	$ 203,648
Debt Instrument, Unamortized Premium			$ 11,700
Consolidated Entities [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 9,000
Notes Payable	9,000	9,000
Other Segments [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 9,000
Notes Payable	$ 7,768	$ 8,179