Variable Interest Entities, Contingent Liabilities and Consolidated Joint Ventures - MCB Real Estate, LLC (Details) - Consolidated Joint Venture-VIEs - MCB Real Estate, LLC and Affiliates	Mar. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($) item
Consolidated VIEs Carrying Amount of Assets and Liabilities
Number of consolidated joint ventures \| item	4	4
Investment in consolidated joint ventures \| $	$ 10,153,000	$ 9,891,000

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	debit
Period Type:	instant