XML 33 R75.htm IDEA: XBRL DOCUMENT
v2.4.1.9

STOCKHOLDERS' EQUITY (Details 4) (USD $) | 0 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 22, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2005 | Feb. 28, 2015 | Dec. 31, 2003
Dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 0.06 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.06 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.03 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.15 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.12 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.12 us-gaap_CommonStockDividendsPerShareDeclared |  |  |
Dividend Amount |  | $ 1,644,000 us-gaap_DividendsCommonStockCash | $ 823,000 us-gaap_DividendsCommonStockCash | $ 816,000 us-gaap_DividendsCommonStockCash | $ 819,000 us-gaap_DividendsCommonStockCash | $ 815,000 us-gaap_DividendsCommonStockCash | $ 805,000 us-gaap_DividendsCommonStockCash | $ 806,000 us-gaap_DividendsCommonStockCash | $ 807,000 us-gaap_DividendsCommonStockCash | $ 807,000 us-gaap_DividendsCommonStockCash | $ 807,000 us-gaap_DividendsCommonStockCash | $ 808,000 us-gaap_DividendsCommonStockCash | $ 797,000 us-gaap_DividendsCommonStockCash | $ 4,102,000 us-gaap_DividendsCommonStockCash | $ 3,233,000 us-gaap_DividendsCommonStockCash | $ 3,219,000 us-gaap_DividendsCommonStockCash |  |  |
Stock Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of stock repurchases authorized |  | 75,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |  |  |  |  |  |  |  | 75,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  | 25,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember
Additional amount of stock repurchases authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,000,000 arcb_StockRepurchaseProgramAdditionalAuthorizedAmount / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |
Number of shares repurchased to date |  | 1,618,150 arcb_StockRepurchasedBalance / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |  |  |  |  |  |  |  | 1,618,150 arcb_StockRepurchasedBalance / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |
Aggregate cost of shares repurchased to date |  | 56,800,000 arcb_StockRepurchaseAggregateCost / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |  |  |  |  |  |  |  | 56,800,000 arcb_StockRepurchaseAggregateCost / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |
Amount of shares available for repurchase under the current buyback program |  | 18,200,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |  |  |  |  |  |  |  | 18,200,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember |  |  |  |  |
Stock Repurchase Program | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of shares available for repurchase under the current buyback program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,700,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
Number of shares repurchased during the period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 64,200 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
Aggregate cost of shares repurchased during the period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,500,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_ShareRepurchaseProgramAxis = arcb_StockRepurchaseProgramMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |

X
- Definition The aggregate cost of shares repurchased to date under a stock repurchase program. + References No definition available. + Details
Name: | arcb_StockRepurchaseAggregateCost
Namespace Prefix: | arcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of shares repurchased to date under a stock repurchase plan. + References No definition available. + Details
Name: | arcb_StockRepurchasedBalance
Namespace Prefix: | arcb_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The additional amount authorized by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | arcb_StockRepurchaseProgramAdditionalAuthorizedAmount
Namespace Prefix: | arcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | arcb_TreasuryStockAbstract
Namespace Prefix: | arcb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + 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 S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + 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 S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_DividendsCommonStockCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsForRepurchaseOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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 Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + 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
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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