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Compensatory Equity Incentive Plan and Other Equity Incentives (Details)
Sep. 30, 2017
shares
Award shares, authorized 4,315,625
Award shares, outstanding 2,598,218
Available for issuance 1,008,185
Amended and Restated Omnibus Incentive Plan [Member]  
Award shares, authorized 3,915,625
Award shares, outstanding 2,598,218
Available for issuance 637,290
Employee Stock Purchase Plan [Member]  
Award shares, authorized 400,000
Available for issuance 370,895