Corporate Borrowings - Indebtedness Outstanding Summary (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 32,594	$ 25,264
Unamortized loan fees	(580)	(710)
Total indebtedness outstanding, net	32,014	24,554
Less current maturities of long-term debt	(386)	(372)
Long-term debt	31,628	24,182
Credit Agreement
Debt Instrument [Line Items]
Unamortized loan fees	$ (412)
Credit Agreement, interest rate	3.90%
Credit Agreement \| Revolver \| Credit Agreement
Debt Instrument [Line Items]
Long-term debt, gross	$ 11,000	3,298
Credit Agreement, interest rate	3.889%
Secured Debt \| Secured Promissory Note
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,594	1,966
Interest rate	3.71%
Secured Debt \| Note Purchase Agreement
Debt Instrument [Line Items]
Long-term debt, gross	$ 20,000	$ 20,000
Capital Lease interest rate	3.53%

-- None. No documentation exists for this element. --

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

The average effective interest rate during the reporting period.

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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 issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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