Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets:
Derivative financial instruments	$ 395	$ 0
Investments:
Cash surrender value of life insurance policies - deferred compensation plan	25,865	23,784
Marketable securities - other	29	37
Liabilities:
Derivative financial instruments	0	101
Deferred compensation plan
Liabilities:
Deferred compensation plan	24,395	23,663
Quoted Prices in Active Markets (Level 1)
Assets:
Derivative financial instruments	0
Investments:
Cash surrender value of life insurance policies - deferred compensation plan	0	0
Marketable securities - other	29	37
Liabilities:
Derivative financial instruments		0
Quoted Prices in Active Markets (Level 1) \| Deferred compensation plan
Liabilities:
Deferred compensation plan	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Derivative financial instruments	395
Investments:
Cash surrender value of life insurance policies - deferred compensation plan	25,865	23,784
Marketable securities - other	0	0
Liabilities:
Derivative financial instruments		101
Significant Other Observable Inputs (Level 2) \| Deferred compensation plan
Liabilities:
Deferred compensation plan	24,395	23,663
Significant Unobservable Inputs (Level 3)
Assets:
Derivative financial instruments	0
Investments:
Cash surrender value of life insurance policies - deferred compensation plan	0	0
Marketable securities - other	0	0
Liabilities:
Derivative financial instruments		0
Significant Unobservable Inputs (Level 3) \| Deferred compensation plan
Liabilities:
Deferred compensation plan	$ 0	$ 0

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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Amount of investment in marketable security.

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