Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
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For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Price of a single share of a number of saleable stocks of a company.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 31, 2018	Jan. 30, 2017
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, granted				26,381
Equity Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for granting		750,000		750,000
Shares available to be granted		653,391		653,391
Award description				The Company may issue shares of common stock or grant other equity-based awards pursuant to the 2016 Equity Plan. Stock-based awards granted to date generally are time-based, vest in equal installments on each anniversary of the grant date and range over a one- to five-year period of time, and, in the case of stock options, expire 10 years from the grant date. As part of the 2016 Equity Plan, a performance equity incentive award program, known as the "Long-term incentive plan" allows participating officers of the Company to earn incentive awards of performance share/restricted stock units if certain pre-determined targets are achieved at the end of a three-year performance cycle. Stock-based compensation expense based on the grant date fair value is recognized ratably over the requisite service period for all awards and reflects forfeitures as they occur.
Other than options, granted, fair value		$ 520	$ 309
Equity Plan 2016 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration		10 years
Equity Plan 2016 [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Award description		Restricted stock units (RSUs) are similar to restricted stock, except the recipient does not receive the stock immediately, but instead receives it upon the terms and conditions of the Company's long-term incentive plans which are subject to performance milestones achieved at the end of a three-year period. Each RSU cliff vests at the end of the three-year period and entitles the recipient to receive one share of common stock on a specified issuance date. The recipient does not have any stockholder rights, including voting rights, with respect to the shares underlying awarded RSUs until the recipient becomes the holder of those shares.During 2018, the Company entered into a long-term incentive program agreement with officers of the Company and its subsidiaries to award RSUs based on a performance metric to be achieved as of December 31, 2020. Assuming the performance metric is achieved, these awards will cliff vest on this date, in which the final number of common shares to be issued will be determined. The range of RSUs which could potentially be awarded at the end of the performance cycle is between 13,188 shares and 52,769 shares, assuming a certain performance metric is met. The table below presents management's evaluation of the probable number of common stock awards to be issued at the end of the performance cycle.During 2017, the Company entered into a long-term incentive program agreement with officers of the Company and its subsidiaries to award RSUs based on a performance metric to be achieved as of December 31, 2019. Assuming the performance metric is achieved, these awards will cliff vest on this date, in which the final number of common shares to be issued will be determined. The range of RSUs which could potentially be awarded at the end of the performance cycle is between 12,703 shares and 50,830 shares, assuming a certain performance metric is met. The table below presents management's evaluation of the probable number of common stock awards to be issued at the end of the performance cycle.
Other than options, granted, fair value		$ 383	$ 0
Equity Plan 2016 [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award method used for valuation				Black-Scholes valuation model
Share price		$ 17.82		$ 17.82				$ 17.92	$ 15.89
Options, Weighted average remaining contractual term		6 years 8 months 12 days
Options, granted, weighted average fair value		$ 10.99
Options, outstanding intrinsic value		$ 222		$ 222
Options, exercised, intrinsic value		365					$ 8
Options, exercisable, intrinsic value		$ 222		$ 222
Maximum [Member] \| Equity Plan 2016 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
Maximum [Member] \| Equity Plan 2016 [Member] \| Restricted Stock Units (RSUs) [Member] \| Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, granted	52,769				50,830	48,871
Minimum [Member] \| Equity Plan 2016 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Minimum [Member] \| Equity Plan 2016 [Member] \| Restricted Stock Units (RSUs) [Member] \| Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, granted	13,188				12,703	12,214