XML 98 R86.htm IDEA: XBRL DOCUMENT
v3.19.1

Stock-Based Compensation And Stock Repurchases (Narrative) (Details) - USD ($) |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 07, 2019 | Nov. 07, 2017 | Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018 | Sep. 30, 2017 | Mar. 02, 2017 | Dec. 31, 2016
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Repurchase program, amount authorized |  |  | $ 16,200,000 |  |  |  |  |
Shares granted |  |  | 219,408 |  |  |  |  |
Stock Option [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Grant date fair value of options vesting |  |  | $ 70,000 | $ 85,000 |  |  |  |
Unrecognized estimated compensation cost related to non-vested stock options granted |  |  | $ 1,500,000 |  |  |  |  |
Recognition period of unrecognized compensation cost |  |  | 2 years 1 month 10 days |  |  |  |  |
Percentage of option currently exercisable |  |  | 91.00% |  |  |  |  |
Intrinsic unrealized value of all options outstanding, vested and expected to vest |  |  | $ 2,000,000 |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Compensation expense |  |  | 209,000 | $ 294,000 |  |  |  |
Unrecognized estimated compensation cost related to non-vested stock options granted |  |  | $ 1,900,000 |  |  |  |  |
Vesting period of stock options and RSU |  |  | 1 year 1 month 6 days |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | Directors [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Percentage of shares vested |  |  | 100.00% |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | Management [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Vesting period of stock options and RSU |  |  | 4 years |  |  |  |  |
Percentage of shares vested |  |  | 25.00% |  |  |  |  |
2017 Stock Repurchase Plan [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Stock buy-back program period |  |  | 2 years |  |  |  |  |
2014 Stock Repurchase Plan [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Repurchase program, amount authorized |  |  |  |  |  |  |  | $ 10,000,000
$25 Million Stock Repurchase Program [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Share price |  |  | $ 16.20 |  |  |  |  |
Shares repurchased plan, shares |  |  | 566 |  |  |  |  |
Class A Nonvoting Common Stock [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Common Stock authorized for issuance under 2010 Stock Incentive Plan |  |  | 2,197,460 |  |  |  |  |
Class A [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Shares granted |  |  | 219,408 |  | 126,840 |  |  |
Class A [Member] | 2017 Stock Repurchase Plan [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Repurchase program, amount authorized |  |  | $ 16,200,000 |  |  |  |  |
Class A [Member] | $25 Million Stock Repurchase Program [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Repurchase value |  |  | $ 8,800,000 |  |  |  |  |
Repurchase program, amount authorized |  |  |  |  |  |  | $ 25,000,000 |
Share price |  |  | $ 15.81 |  |  |  |  |
Shares repurchased plan, shares |  |  | 559,627 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Vesting period of stock options and RSU |  |  | 0 years |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Vesting period of stock options and RSU |  |  | 4 years |  |  |  |  |
2010 Stock Incentive Plan [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Additional shares authorized |  | 947,460 |  |  |  |  |  |
2010 Stock Incentive Plan [Member] | Class A Nonvoting Common Stock [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Common Stock authorized for issuance under 2010 Stock Incentive Plan |  |  |  |  |  | 1,250,000 |  |
Common Stock shares remaining for future issuances |  |  | 789,869 |  |  |  |  |
Repurchase program, shares available |  |  |  |  |  | 302,540 |  |
Subsequent Event [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |
Equity And Stock-Based Compensation [Line Items] |  |  |  |  |  |  |  |
Compensation expense | $ 35,000 |  |  |  |  |  |  |

X
- Definition Equity And Stock Based Compensation [Line Items] + References No definition available. + Details
Name: | rdi_EquityAndStockBasedCompensationLineItems
Namespace Prefix: | rdi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Shares Vested + References No definition available. + Details
Name: | rdi_PercentageOfSharesVested
Namespace Prefix: | rdi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based compensation arrangement by share-based payment award options vested grant date fair value. + References No definition available. + Details
Name: | rdi_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedGrantDateFairValue
Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share-based compensation arrangement byshare-based payment award percentage of options exercisable. + References No definition available. + Details
Name: | rdi_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOptionsExercisable
Namespace Prefix: | rdi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Unrecognized cost of unvested share-based compensation awards. + References 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 (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References 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 (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References 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=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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). + References 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)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References 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 (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramPeriodInForce1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_TreasuryStockCommonValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_StockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=us-gaap_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=us-gaap_ManagementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=rdi_TwoThousandTwentySevenStockRepurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=rdi_MayTwoThousandFourteenStockRepurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=rdi_TwentyFiveMillionStockRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_NonvotingCommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=rdi_TwoThousandTenStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |