v3.10.0.1

Stock incentive plans - Plans (Details) - shares	Dec. 31, 2018	Dec. 31, 2017
2011 Plan
Stock incentive plans
Common stock shares reserved for issuance	13,739,820
Number of options outstanding	290,000	1,128,000
2001 Plan
Stock incentive plans
Number of options outstanding	14,000	155,000
Stock options
Stock incentive plans
Number of options outstanding	304,000	1,283,000
Stock options | 2011 Plan
Stock incentive plans
Number of options outstanding	290,000
Stock options | 2001 Plan
Stock incentive plans
Number of options outstanding	14,000
RSUs | 2011 Plan
Stock incentive plans
RSUs outstanding	3,119,000

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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-Publisher FASB
-Name Accounting Standards Codification
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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Number of options outstanding, including both vested and non-vested options.

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