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2004 Plan outstanding and exercisable options by price range (Details) - $ / shares	11 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Weighted average remaining life (in yrs.)		5 years 6 months 29 days
Price Range $0.95 - $1.25
Range of exercise		$ 0.95
Range of exercise		$ 1.25
Number outstanding options	340,380	340,380
Weighted average remaining life (in yrs.)		3 years 6 months 29 days
Weighted average exercise price (US$ per share)	$ 1.05	$ 1.05
Number exercisable options	340,380	340,380
Weighted average exercise price	$ 1.05	$ 1.05
Price Range $1.50 - $1.82
Range of exercise		1.50
Range of exercise		$ 1.82
Number outstanding options	141,855	141,855
Weighted average remaining life (in yrs.)		2 years 29 days
Weighted average exercise price (US$ per share)	$ 1.73	$ 1.73
Number exercisable options	141,855	141,855
Weighted average exercise price	$ 1.73	$ 1.73
Price Range $1.89 - $2.27
Range of exercise	1.89
Range of exercise	$ 2.27
Number outstanding options	513,647	513,647
Weighted average remaining life (in yrs.)	6 years 29 days
Weighted average exercise price (US$ per share)	$ 2.07	$ 2.07
Number exercisable options	369,493	369,493
Weighted average exercise price	$ 2.07	$ 2.07
Price Range $2.32 - $2.49
Range of exercise		2.32
Range of exercise		$ 2.49
Number outstanding options	474,860	474,860
Weighted average remaining life (in yrs.)		6 years
Weighted average exercise price (US$ per share)	$ 2.34	$ 2.34
Number exercisable options	135,317	135,317
Weighted average exercise price	$ 2.34	$ 2.34
Price Range $2.50 - $2.75
Range of exercise		2.50
Range of exercise		$ 2.75
Number outstanding options	318,182	318,182
Weighted average remaining life (in yrs.)		6 years 2 months 1 day
Weighted average exercise price (US$ per share)	$ 2.69	$ 2.69
Number exercisable options	300,210	300,210
Weighted average exercise price	$ 2.69	$ 2.69
Price Range $2.82 - $2.93
Range of exercise		2.82
Range of exercise		$ 2.93
Number outstanding options	219,374	219,374
Weighted average remaining life (in yrs.)		8 years 2 months 1 day
Weighted average exercise price (US$ per share)	$ 2.93	$ 2.93
Number exercisable options	107,459	107,459
Weighted average exercise price	$ 2.93	$ 2.93
Price Range $3.04 - $3.88
Range of exercise		3.04
Range of exercise		$ 3.88
Number outstanding options	200,880	200,880
Weighted average remaining life (in yrs.)		3 years 8 months 2 days
Weighted average exercise price (US$ per share)	$ 3.37	$ 3.37
Number exercisable options	194,901	194,901
Weighted average exercise price	$ 3.37	$ 3.37
Price Range $4.22 - $4.49
Range of exercise		4.22
Range of exercise		$ 4.49
Number outstanding options	183,608	183,608
Weighted average remaining life (in yrs.)		7 years 5 months 1 day
Weighted average exercise price (US$ per share)	$ 4.24	$ 4.24
Number exercisable options	124,684	124,684
Weighted average exercise price	$ 4.24	$ 4.24
Price Range $0.95 - $4.49
Range of exercise		0.95
Range of exercise		$ 4.49
Number outstanding options	2,392,786	2,392,786
Weighted average remaining life (in yrs.)		5 years 6 months 29 days
Weighted average exercise price (US$ per share)	$ 2.40	$ 2.40
Number exercisable options	1,714,299	1,714,299
Weighted average exercise price	$ 2.40	$ 2.40

X

- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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