Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details 4)

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Stock Based Compensation (Details 4) - Nonvested Shares [Member] - Aircom 2014 Plan [Member] - $ / shares
9 Months Ended 12 Months Ended
Dec. 31, 2018
Mar. 31, 2018
Number of Shares    
Outstanding, Beginning 164,125
Granted 78,000 412,000
Vested (70,714) (88,875)
Forfeited/Cancelled (159,000)
Outstanding, Ending 171,411 164,125
Weighted Average Exercise Price Per Share    
Options outstanding, beginning $ 32.5312
Granted 19.7462 29.5771
Vested 28.9777 27.8376
Forfeited/Cancelled 27.5000
Options outstanding, Ending $ 28.1794 $ 32.5312