Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

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

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Date the debt instrument was issued, in CCYY-MM-DD format.

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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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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of the required periodic payments including both interest and principal payments.

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Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a financial asset repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same financial asset at a date certain for a specified price. Includes repurchase-to-maturity transactions and liabilities not subject to a master netting arrangement.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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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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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Debt Instrument, Initial Payment

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Other Borrowings (Narrative) (Details) - USD ($)		1 Months Ended		12 Months Ended						24 Months Ended
Other Borrowings (Narrative) (Details) - USD ($)	Mar. 15, 2011	Dec. 31, 2014	Dec. 15, 2014	Dec. 31, 2015	Dec. 31, 2014	Nov. 06, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2015	Dec. 15, 2013	Dec. 07, 2010
Debt Instrument [Line Items]
Notes Payable		$ 0		$ 67,500,000	$ 0					$ 67,500,000
Loans Payable to Bank		101,000,000		$ 150,000,000	101,000,000					150,000,000
Debt instrument, maturity date				Jun. 15, 2020
Debt instrument, date of first required payment				Sep. 30, 2015
Debt instrument, frequency of periodic payment				quarterly				annual
Short-term borrowings		48,566,000		$ 63,887,000	48,566,000					63,887,000
Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement				88,164,000						88,164,000
Other		18,822,000		19,017,000	18,822,000					19,017,000
Secured Debt		129,077,000		115,615,000	129,077,000					115,615,000
Term Facility
Debt Instrument [Line Items]
Notes Payable		0		$ 67,500,000	$ 0					67,500,000
Loans Payable to Bank							$ 1,000,000
Debt instrument, maturity date							Jun. 01, 2015
Repayments of Debt							$ 1,000,000
Loans Payable
Debt Instrument [Line Items]
Debt instrument, issuance date				Dec. 15, 2014	Oct. 30, 2009
Revolving Credit Facility
Debt Instrument [Line Items]
Notes Payable		0		$ 0	$ 0					0
Line of Credit Facility, Maximum Borrowing Capacity		100,000,000		$ 75,000,000	100,000,000					75,000,000
Debt instrument, maturity date			Dec. 15, 2014	Dec. 12, 2016		Nov. 06, 2014	Oct. 25, 2013
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.20%
Banks And Brokers
Debt Instrument [Line Items]
Securities sold under repurchase agreements							$ 180,000,000
Securities Sold under Agreements to Repurchase
Debt Instrument [Line Items]
Securities sold under repurchase agreements		48,600,000		$ 58,887,000	$ 48,600,000					58,887,000
Fixed Rate Promissory Note
Debt Instrument [Line Items]
Debt instrument, issuance date					Aug. 31, 2012
Debt instrument, maturity date				Sep. 01, 2017
Debt instrument, frequency of periodic payment				monthly
Other		18,800,000		$ 18,300,000	$ 18,800,000					$ 18,300,000
Contractual Rate				3.75%						3.75%
Non Recourse Debt
Debt Instrument [Line Items]
Other				$ 732,000						$ 732,000
Junior Subordinated Amortizing Notes
Debt Instrument [Line Items]
Debt instrument, issuance date							Dec. 31, 2010
Debt instrument, maturity date							Dec. 15, 2013		Dec. 15, 2013
Debt instrument, date of first required payment							Mar. 15, 2011
Debt instrument, frequency of periodic payment							quarterly
Contractual Rate											9.50%
Junior subordinated notes												$ 44,700,000
Quarterly principal and interest payments							$ 4,300,000
Debt Instrument, Initial Payment	$ 4,600,000
Secured Debt
Debt Instrument [Line Items]
Debt instrument, maturity date				Dec. 15, 2017
Contractual Rate				1.4452%						1.4452%
Proceeds from Issuance of Debt		$ 150,000,000		$ 10,000,000						$ 160,000,000
Base Rate Loan \| Highest Rate \| Term Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.75%
Base Rate Loan \| Highest Rate \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Base Rate Loan \| Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Base Rate Loan \| Eurodollar
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
Eurodollar Rate Loan \| Highest Rate \| Term Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.75%
Eurodollar Rate Loan \| Highest Rate \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.50%