Accounting Policies Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2014
Accounting Policies [Abstract]
New Accounting Standards Updates [Policy Text Block]	New Accounting Standards Updates (ASU): During 2014, through the date of this report, the FASB issued twelve accounting standards updates, only two of which apply to Arrow. ASU 2014-01 "Investments-Equity Method and Joint Ventures" allows an entity that invests in affordable housing projects that qualify for low-income housing tax credits to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense. The standard is effective for annual years beginning after December 15, 2014, with earlier adoption allowed. We adopted the proportional amortization method in the first quarter of 2014. The adoption did not have a material impact on our financial condition or results of operations. ASU 2014-04 "Receivables - Trouble Debt Restructurings by Creditors" provides additional guidance on when an in substance repossession or foreclosure occurs and is effective for annual periods beginning after December 15, 2014. We are evaluating the impact of adopting this standard, and we do not expect that it will have a material impact on our financial condition or results of operations.

New Accounting Standards Updates (ASU): During 2014, through the date of this report, the FASB issued twelve accounting standards updates, only two of which apply to Arrow.

ASU 2014-01 "Investments-Equity Method and Joint Ventures" allows an entity that invests in affordable housing projects that qualify for low-income housing tax credits to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense. The standard is effective for annual years beginning after December 15, 2014, with earlier adoption allowed. We adopted the proportional amortization method in the first quarter of 2014. The adoption did not have a material impact on our financial condition or results of operations.

ASU 2014-04 "Receivables - Trouble Debt Restructurings by Creditors" provides additional guidance on when an in substance repossession or foreclosure occurs and is effective for annual periods beginning after December 15, 2014. We are evaluating the impact of adopting this standard, and we do not expect that it will have a material impact on our financial condition or results of operations.