Earnings Per Share (Tables)  | 
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Mar. 31, 2019  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Computation of Basic and Diluted Earnings Per Share | 
 The following are the common share amounts used to compute the basic and diluted earnings per share for each period: 
 
 
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- References No definition available. 
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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