2.4.0.8080400 - Disclosure - Fees and Related Party Transactions (Tables)truefalsefalse1false falsefalsec20130101to20130630http://www.sec.gov/CIK0001461237duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_RelatedPartyTransactionsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Fees and Related Party Transactions [Abstract]2false 2gaifb_ScheduleOfSponsorFeesTableTextBlockgaifb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-family: 'Times New Roman', Times, serif; font-size: 10pt;"><div style="text-align: justify; text-indent: 0pt; display: block; font-family: Times New Roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">For the three and six months ended June 30, 2013 the Sponsor Fee listed below for Class 2 included a selling agent fee (the “Selling Agent Fee”) of 2%. The Selling Agent Fee compensates selling agents for initial and on-going services to the Fund.</div><div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"> </div><div style="text-align: center;"><table cellpadding="0" cellspacing="0" style="width: 80%; font-family: times new roman; font-size: 10pt;"><tr><td valign="bottom" style="border-bottom: black 2px solid; width: 25%;"><div style="text-align: center; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; font-weight: bold; margin-right: 0pt;">Class</div></td><td valign="bottom" style="border-bottom: black 2px solid; width: 1%; font-family: times new roman; font-size: 10pt; font-weight: bold;"> </td><td colspan="2" nowrap="nowrap" valign="bottom" style="border-bottom: black 2px solid; width: 26%;"><div style="text-align: center; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; font-weight: bold; margin-right: 0pt;">2013 Annual Rate</div></td><td nowrap="nowrap" valign="bottom" style="border-bottom: black 2px solid; text-align: left; width: 1%; font-family: times new roman; font-size: 10pt; font-weight: bold;"> </td><td valign="bottom" style="border-bottom: black 2px solid; width: 1%; font-family: times new roman; font-size: 10pt; font-weight: bold;"> </td><td colspan="2" nowrap="nowrap" valign="bottom" style="border-bottom: black 2px solid; width: 25%;"><div style="text-align: center; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; font-weight: bold; margin-right: 0pt;">2012 Annual Rate</div></td><td nowrap="nowrap" valign="bottom" style="text-align: left; padding-bottom: 2px; width: 1%; font-family: times new roman; font-size: 10pt; font-weight: bold;"> </td></tr><tr><td valign="bottom" style="width: 25%; display: inline; font-family: times new roman; font-size: 10pt;">  </td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td colspan="2" nowrap="nowrap" valign="bottom" style="width: 26%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td colspan="2" nowrap="nowrap" valign="bottom" style="width: 25%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td></tr><tr bgcolor="#cceeff"><td valign="bottom" style="width: 25%;"><div style="text-align: center; text-indent: -18pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Class 0</div></td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: center; width: 25%; font-family: times new roman; font-size: 10pt;">0.75%</td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%;"> </td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: center; width: 24%; font-family: times new roman; font-size: 10pt;">1.00%</td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%;"> </td></tr><tr bgcolor="white"><td valign="bottom" style="width: 25%;"><div style="text-align: center; text-indent: -18pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Class 2</div></td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: center; width: 25%; font-family: times new roman; font-size: 10pt;">2.75%</td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%;"> </td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: center; width: 24%; font-family: times new roman; font-size: 10pt;">1.00%</td></tr></table></div></div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of Sponsor Fees at an annual rate, disclosed as a percentage.No definition available.false0Sponsor Fees3false 2gaifb_ScheduleOfBrokerageFeesTableTextBlockgaifb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div style="font-family: 'Times New Roman', Times, serif; font-size: 10pt;"><div style="text-align: justify; text-indent: 0pt; display: block; font-family: Times New Roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">This Brokerage Fee was payable monthly in arrears calculated as of the last business day of each month in the same manner as the Advisory Fee.</div><div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"> </div><div style="text-align: center;"><table cellpadding="0" cellspacing="0" style="width: 80%; font-family: times new roman; font-size: 10pt;"><tr><td valign="bottom" style="border-bottom: black 2px solid; width: 40%;"><div style="text-align: center; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; font-weight: bold; margin-right: 0pt;">Class</div></td><td valign="bottom" style="border-bottom: black 2px solid; width: 1%; font-family: times new roman; font-size: 10pt; font-weight: bold;"> </td><td colspan="2" nowrap="nowrap" valign="bottom" style="border-bottom: black 2px solid; width: 38%;"><div style="text-align: center; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; font-weight: bold; margin-right: 0pt;">Annual Rate</div></td><td nowrap="nowrap" valign="bottom" style="text-align: left; padding-bottom: 2px; width: 1%; font-family: times new roman; font-size: 10pt; font-weight: bold;"> </td></tr><tr><td valign="bottom" style="width: 40%; display: inline; font-family: times new roman; font-size: 10pt;">  </td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td colspan="2" nowrap="nowrap" valign="bottom" style="width: 38%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td></tr><tr bgcolor="#cceeff"><td valign="bottom" style="width: 40%;"><div style="text-align: center; text-indent: -18pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Class 0</div></td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: center; width: 37%; font-family: times new roman; font-size: 10pt;">2%</td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%;"> </td></tr><tr bgcolor="white"><td valign="bottom" style="width: 40%;"><div style="text-align: center; text-indent: -18pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Class 2</div></td><td valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: left; width: 1%; font-family: times new roman; font-size: 10pt;"> </td><td valign="bottom" style="text-align: center; width: 37%; font-family: times new roman; font-size: 10pt;">4%</td><td nowrap="nowrap" valign="bottom" style="text-align: left; width: 1%;"> </td></tr></table></div></div>falsefalsefalsenonnum:textBlockItemTypenaRepresents tabular description of brokerage fees at annual rate for each class of funds.No definition available.false0Brokerage feesfalseFees and Related Party Transactions (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://grahamgaifb.com/role/FeesAndRelatedPartyTransactionsTables13