Lease Commitments	12 Months Ended
Dec. 31, 2018
Leases [Abstract]
Lease Commitments	15. LEASE COMMITMENTS Rental expenses for operating leases from continuing operations amounted to $16.7 million, $14.8 million and $15.6 million in 2018, 2017 and 2016, respectively. These expenses relate primarily to building leases of the Company. At December 31, 2018, future minimum rental payments under non-cancelable operating leases were $41.1 million, payable as follows: 2019 - $13.5 million; 2020 - $11.0 million; 2021 - $8.3 million and 2022 - $4.5 million and 2023 and thereafter - $3.8 million. It is expected that in the normal course of business, leases that expire will generally be renewed or replaced by leases on similar property and equipment. Rental expenses for operating leases related to the former Chaucer business amounted to $3.8 million, $3.3 million and $2.9 million in 2018, 2017 and 2016, respectively. These expenses relate primarily to building leases of Chaucer and are included in discontinued operations.

The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-URI http://asc.fasb.org/subtopic&trid=77888251

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-URI http://asc.fasb.org/topic&trid=2208923

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