Stock - Based Compensation (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	May 31, 2019
Stock-based compensation			$ 4.4	$ 2.7
Issuance of an aggregate shares of common stock			500,000
Employee stock ownership plan, description			The Company began a twelve-month offering period under the ESPP on June 3, 2019 that authorizes employees to contribute up to 10% of their base compensation to purchase a maximum of 1,000 shares. The shares will be purchased on the last day of the offering period at a discounted price that will equal to 85% of the lower of: (i) the closing price at the beginning of the offering period and (ii) the closing price at the end of the offering period. The Company estimates that approximately 10,000 shares will be purchased during this offering period.
Remaining shares are purchase			475,400
2018 Plan [Member]
Authorized shares to be issued						2,550,000
Outstanding awards plan, description			(i) 2,489,197 shares subject to outstanding awards under the Prior Plans, including 1,092,633 shares subject to market-price vesting conditions, and (ii) 1,201,616 shares subject to outstanding awards under the 2018 Plan, including 286,181 shares subject to performance-based target awards as to which the number that ultimately may vest would range from 0% to 200% based on the performance level attained. As of June 30, 2019, there were 1,348,384 shares available for new awards under the 2018 Plan (or 1,062,203 shares if we reflect inclusion of performance-based awards at the maximum level of performance) and no shares available for new awards under the Prior Plans. All awards consist of RSUs and Restricted Stock.
New awards of restricted shares	1,348,384		1,348,384		1,348,384
Awards granted, description			(1) the 542,770 RSUs approved for management and other participants with respect to fiscal 2018 as to which the contingent cash-settlement feature lapsed upon approval of the 2018 Plan by stockholders (see Note 16, "Derivative Liability") and (2) 572,435 RSUs approved for management and other participants with respect to fiscal 2019 comprised of two components: (i) 50% represent performance-based target RSUs that require both attainment of Company performance criteria for 2019 and the participants remaining employed for a three-year service period; and (ii) 50% represent service-based RSUs that vest over a period of three years. In addition, an aggregate of 86,500 RSUs were awarded during the quarter ended June 30, 2019 (following approval of the 2018 Plan by stockholders) as new hire or special recognition grants.
RSU's [Member]
Number of shares issued					9,806
Number of shares withheld for taxes					1,059
Stock-based compensation	$ 2.3	$ 1.5	$ 4.4	$ 2.7