Name:	us-gaap_EquityClassOfTreasuryStockLineItems
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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://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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Period Type:	duration

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate 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

+ Details

Name:	us-gaap_StockRepurchasedDuringPeriodValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-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

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

- Details

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- Details

Name:	us-gaap_ShareRepurchaseProgramAxis=fcfs_A2013ShareRepurchaseProgramMember
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Period Type:

- Details

Name:	us-gaap_ShareRepurchaseProgramAxis=fcfs_A2015ShareRepurchaseProgramMember
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Period Type:

Capital Stock Narrative (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2011	Aug. 20, 2014	Jan. 31, 2013	Jan. 31, 2015
2011 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased					1,500,000
Stock repurchased during period (shares)	1,500,000
Stock repurchased during period (amount)	$ 61,275
2013 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased							1,500,000
Stock repurchased during period (shares)		536,000	235,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased						1,500,000
Stock Repurchase program, Average Cost Per Share				$ 55.09
2015 Share Repurchase Program [Member] \| Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased								2,000,000