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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Shareholders' Equity (Restricted Stock Units) (Details) - Restricted Stock Units - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Number of Restricted Stock Units (000's)
Beginning balance (in shares)		1,139,000
Issued (in shares)	42,147	134,235
Vested (in shares)		(589,000)
Expired / Forfeited (in shares)		(5,000)
Ending balance (in shares)	679,000	679,000	1,139,000
Weighted average grant price(1)
Beginning balance (USD per share)		$ 2.16
Issued (USD per share)		7.19
Vested (USD per share)		2.33
Expired / Forfeited (USD per share)		5.70
Ending balance (USD per share)	$ 2.97	$ 2.97	$ 2.16
Weighted average remaining contractual life
Weighted average remaining contractual life		5 months 19 days	6 months 18 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$ 5,878	$ 5,878	$ 7,129
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Weighted average grant price(1)
Issued (USD per share)		$ 5.70
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Weighted average grant price(1)
Issued (USD per share)		$ 10.44