Investments in Other Entities (Condensed Consolidated Balance Sheet) (Detail) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Assets
Land and building	$ 12,909,206	$ 13,814,306
Total assets	551,898,869	490,635,793
Liabilities and Members' Equity
Total liabilities and members' equity	551,898,869	$ 490,635,793
W College LLC [Member]
Assets
Land and building	33,347,679
Total assets	33,347,679
Liabilities and Members' Equity
Members' equity	33,347,679
Total liabilities and members' equity	$ 33,347,679

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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