Represents the vesting period of the employer's matching contributions to the defined contribution plan.

No definition available.

Name:	PCMI_DefinedContributionPlanEmployersMatchingContributionVestingPeriod
Namespace Prefix:	PCMI_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

- 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

- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Period from grant date that an equity-based award expires, 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)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=PCMI_TwoThousandAndTwelvePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=PCMI_NonEmployeeOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=PCMI_NonEmployeeTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=PCMI_NonEmployeeThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=PCMI_ThreeNonEmployeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RetirementPlanNameAxis=PCMI_NonUsSavingsPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Employee & Non-Employee Benefits (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	May 20, 2018	May 20, 2017	May 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Matching contributions by employer (as a percent)				25.00%
Maximum Percentage of participants' compensation for which matching contributions are made				4.00%
Vesting period of matched contributions to employees				5 years
Matching contribution to the plan				$ 936	$ 876	$ 803
Number of shares granted during the period				482,500
Stock options exercise price per share				$ 11.26
Stock Options [Member] \| 2012 Plan [Member] \| Non Employee One [Member]
Number of shares granted during the period	11,000		12,750
Stock Options [Member] \| 2012 Plan [Member] \| Non Employee Two [Member]
Number of shares granted during the period	11,000		12,750
Stock Options [Member] \| 2012 Plan [Member] \| Non Employee Three [Member]
Number of shares granted during the period	11,000		12,750
Stock Options [Member] \| 2012 Plan [Member] \| Three Non Employee [Member]
Number of shares granted during the period	33,000		38,250
Stock options vesting period	2 years		2 years
Stock options exercise price per share	$ 12.60		$ 10.05
Stock options term	7 years		7 years
Restricted Stock Units RSU [Member] \| 2012 Plan [Member] \| Non Employee One [Member]
Number of shares granted during the period		4,000
Restricted Stock Units RSU [Member] \| 2012 Plan [Member] \| Non Employee Two [Member]
Number of shares granted during the period		4,000
Restricted Stock Units RSU [Member] \| 2012 Plan [Member] \| Non Employee Three [Member]
Number of shares granted during the period		4,000
Restricted Stock Units RSU [Member] \| 2012 Plan [Member] \| Three Non Employee [Member]
Number of shares granted during the period		12,000
Stock options vesting period		2 years
Non-US Savings Plans [Member]
Matching contribution to the plan				$ 300	$ 300	$ 300