XML 64 R55.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Net Income (Los) Attributable to Controlling Interests Per Common Share Antidilutive Securities (Details) (USD $) | 6 Months Ended |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 3.625% Convertible Senior Notes Due 2025 [Member] | May 31, 2012 3.625% Convertible Senior Notes Due 2025 [Member] | May 31, 2005 3.625% Convertible Senior Notes Due 2025 [Member] | Jun. 30, 2013 5.875% Convertible Senior Notes Due 2035 [Member] | Jun. 30, 2012 5.875% Convertible Senior Notes Due 2035 [Member] | Jun. 30, 2012 5.875% Convertible Senior Notes Due 2035 [Member] | Nov. 30, 2005 5.875% Convertible Senior Notes Due 2035 [Member] | May 31, 2005 5.875% Convertible Senior Notes Due 2035 [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Shares potentially issuable and includible in diluted net loss attributable to controlling interest per common share (in shares) | 0 |  |  | 0 | 0 | 0 |  |
Interest rate of convertible senior note (in hundredths) |  | 3.625% | 3.625% |  |  |  | 5.875% | 5.875%
Conversion price for convertible senior notes (in dollars per share) | $ 20.22 |  |  | $ 24.61 |  |  |  |
Maximum potential dilution in future periods under the conversion provisions of convertible senior notes (in shares) | 22,246 |  |  | 5,700,000 |  |  |  |

X
- Definition Maximum potential additional shares which could be included in the calculation of diluted EPS in future periods as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. + References No definition available. + Details
Name: | atlc_MaximumPotentialIncrementalCommonSharesAttributableToConversionOfDebtSecurities
Namespace Prefix: | atlc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 32 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Interest rate stated in the contractual debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 40 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1930-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 26, 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration