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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note 5 - Equity (Details) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 31, 2016 employee $ / shares shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 shares
EQUITY
Total shares available under plan (in shares) \| shares		40,942,581		40,942,581			40,082,467
Compensation costs		$ 1.1	$ 0.7	$ 2.0	$ 1.2
Granted (in shares) \| shares		5,100,000		5,100,000
Restricted Stock
EQUITY
Compensation costs		$ 1.1		$ 2.0
Unrecognized compensation cost		$ 6.6		$ 6.6
Weighted-average period				1 year 7 months 6 days
Restricted Stock \| Minimum
EQUITY
Vesting period				1 year
Restricted Stock \| Maximum
EQUITY
Vesting period				3 years
Stock Options
EQUITY
Compensation costs						$ 2.1
Granted (in shares) \| shares	937,424
Number of individuals \| employee	2
Purchase price (per share) \| $ / shares	$ 5.34
Expiration period	10 years