QUARTERLY FINANCIAL DATA (UNAUDITED) (Detail Textual) - USD ($)	3 Months Ended
Jun. 30, 2018	Mar. 31, 2018
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results	$ 543,000	$ 2,067,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share	$ 0.01	$ 0.04
Foundation grants [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 543,000	$ 2,067,000

Amount of the effect of a change in accounting principle on diluted earnings per share.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 10
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