v3.3.1.900

EMPLOYEE BENEFIT PLANS - Defined contribution plan (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
EMPLOYEE BENEFIT PLANS |  |  |
Qualification age of employees for participation in the 401(k) savings plan | 21 years |  |
Employer match of employee contributions of first 3% of eligible compensation (as a percent) | 100.00% |  |
Percentage of eligible compensation, matched 100% by employer | 3.00% |  |
Employer's match of employee's contributions of the next 5% of eligible compensation (as a percent) | 50.00% |  |
Percentage of eligible compensation, matched 50% by employer | 5.00% |  |
Expenses under the 401(k) saving plan | $ 3,353,000 | $ 2,696,000 | $ 2,817,000

X
- Definition Represents the minimum qualification age for employees to become eligible to participate in the defined contribution plan. + References No definition available. + Details
Name: | amc_DefinedContributionPlanEligibilityMinimumAge
Namespace Prefix: | amc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the first level of employee's contributions (percentage of compensation), which are matched by the employer. + References No definition available. + Details
Name: | amc_DefinedContributionPlanEmployersMatchEmployeesContributionLevelOne
Namespace Prefix: | amc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the second level of employee's contributions (percentage of compensation), which are matched by the employer. + References No definition available. + Details
Name: | amc_DefinedContributionPlanEmployersMatchEmployeesContributionLevelTwo
Namespace Prefix: | amc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the employer's matching contribution of the first level of employee's contributions. + References No definition available. + Details
Name: | amc_DefinedContributionPlanEmployersMatchLevelOne
Namespace Prefix: | amc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the employer's matching contribution of the second level of employee's contributions. + References No definition available. + Details
Name: | amc_DefinedContributionPlanEmployersMatchLevelTwo
Namespace Prefix: | amc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration