2.4.0.8015 - Disclosure - Accounting Policies, by Policy (Policies)truefalsefalse1falsefalsefalsec14_From1Jan2013To30Jun2013http://www.sec.gov/CIK0000097517duration2013-01-01T00:00:002013-06-30T00:00:001true1us-gaap_AccountingPoliciesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false2us-gaap_SubsequentEventsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<table id="MTAB1251" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellspacing="0" cellpadding="0" border="0"><tr><td style="VERTICAL-ALIGN: top"><p id="PARA1253" style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">We
evaluate events that occur after the balance sheet date
but before financial statements are, or are available
to be, issued to determine if a material event requires
our amending the financial statements or disclosing the
event. We evaluated subsequent events through August 6,
2013, the date we issued these financial
statements</font></p></td></tr></table>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for reporting subsequent events.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790
false03false2us-gaap_CashAndCashEquivalentsPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<table id="MTAB1276" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellspacing="0" cellpadding="0" border="0"><tr><td style="VERTICAL-ALIGN: top"><p id="PARA1278" style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The
Trust invests cash in excess of daily requirements
primarily in bank deposit and savings accounts and
certificates of deposit with maturities of ninety days
or less. Such investments are deemed to be highly
liquid debt instruments and classified as cash
equivalents for purposes of the statements of cash
flows.</font>
</p>
</td>
</tr>
</table><br/><p id="PARA1280" style="TEXT-ALIGN: justify; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25">
<font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Supplemental
cash flow information for the six month periods ended June
30, 2013 and 2012 is summarized as follows:</font>
</p><br/><table id="TBL1287" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; MARGIN-LEFT: 10%; WIDTH: 80%; MARGIN-RIGHT: 10%; TEXT-INDENT: 0px" cellspacing="0" cellpadding="0" border="0">
<tr id="TBL1287.finRow.1">
<td style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 70%">
 
</td>
<td id="TBL1287.finRow.1.lead.D2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.1.amt.D2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%" colspan="2">
<p id="PARA1282" style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25">
<font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">2013</font>
</p>
</td>
<td id="TBL1287.finRow.1.trail.D2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; PADDING-BOTTOM: 1px; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.1.lead.D3" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.1.amt.D3" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; BORDER-BOTTOM: #000000 1px solid; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%" colspan="2">
<p id="PARA1283" style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25">
<font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">2012</font>
</p>
</td>
<td id="TBL1287.finRow.1.trail.D3" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; PADDING-BOTTOM: 1px; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%">
 
</td>
</tr>
<tr id="TBL1287.finRow.2">
<td style="WIDTH: 70%">
 
</td>
<td id="TBL1287.finRow.2.lead.B2" style="WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.2.symb.B2" style="WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.2.amt.B2" style="WIDTH: 12%">
 
</td>
<td id="TBL1287.finRow.2.trail.B2" style="WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.2.lead.B3" style="WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.2.symb.B3" style="WIDTH: 1%">
 
</td>
<td id="TBL1287.finRow.2.amt.B3" style="WIDTH: 12%">
 
</td>
<td id="TBL1287.finRow.2.trail.B3" style="WIDTH: 1%">
 
</td>
</tr>
<tr id="TBL1287.finRow.3">
<td style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: top; WIDTH: 70%; BACKGROUND-COLOR: #cceeff">
<p id="PARA1284" style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25">
<font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Income
taxes paid</font>
</p>
</td>
<td id="TBL1287.finRow.3.lead.2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%; BACKGROUND-COLOR: #cceeff">
 
</td>
<td id="TBL1287.finRow.3.symb.2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; WIDTH: 1%; BACKGROUND-COLOR: #cceeff">
$
</td>
<td id="TBL1287.finRow.3.amt.2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: right; MARGIN-LEFT: 0pt; WIDTH: 12%; BACKGROUND-COLOR: #cceeff">
4,303,312
</td>
<td id="TBL1287.finRow.3.trail.2" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" nowrap="nowrap">
 
</td>
<td id="TBL1287.finRow.3.lead.3" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: center; MARGIN-LEFT: 0pt; WIDTH: 1%; BACKGROUND-COLOR: #cceeff">
 
</td>
<td id="TBL1287.finRow.3.symb.3" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: left; MARGIN-LEFT: 0pt; WIDTH: 1%; BACKGROUND-COLOR: #cceeff">
$
</td>
<td id="TBL1287.finRow.3.amt.3" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; VERTICAL-ALIGN: bottom; TEXT-ALIGN: right; MARGIN-LEFT: 0pt; WIDTH: 12%; BACKGROUND-COLOR: #cceeff">
6,924,051</td></tr></table>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016
Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5
Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 305
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2122427
Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586
Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Financial Reporting Release (FRR)
-Number 203
-Paragraph 02-03
false04false2us-gaap_SegmentReportingPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<table id="MTAB1292" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellspacing="0" cellpadding="0" border="0"><tr><td style="VERTICAL-ALIGN: top"><p id="PARA1294" style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">ASC
280, “<i>Segment Reporting,”</i>
establishes standards for the way public business
enterprises are to report information about operating
segments. In accordance with ASC 280, the Trust
utilizes the management approach as a basis for
identifying reportable segments. The management
approach is based on the way that management organizes
the segments within the enterprise for making operating
decisions and assessing performance. The Trust’s
management views its operations as one segment and
believes the only significant activity is managing the
land which was conveyed to the Trust in 1888. The
Trust’s management makes decisions about resource
allocation and performance assessment based on the same
financial information presented in these financial
statements. Managing the land includes sales and leases
of such land, and the retention of oil and gas
royalties.</font></p></td></tr></table>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for segment reporting.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790
false05false2us-gaap_ComprehensiveIncomePolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<table id="MTAB1297" style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellspacing="0" cellpadding="0" border="0"><tr><td style="VERTICAL-ALIGN: top"><p id="PARA1299" style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">In
June 2011, the FASB issued Accounting Standards Update
No. 2011-05, “<i>Comprehensive Income (Topic
220): Presentation of Comprehensive Income”</i>
(“ASU 2011-05”). ASU 2011-05 amends
existing guidance by allowing only two options for
presenting the components of net income and other
comprehensive income: (1) in a single continuous
financial statement, statement of comprehensive income
or (2) in two separate but consecutive financial
statements, consisting of an income statement followed
by a separate statement of other comprehensive income.
ASU No. 2011-05 requires retrospective application, and
it is effective for fiscal years beginning after
December 15, 2011. We adopted the provisions of ASU
2011-05 as of January 1, 2012 using the single
continuous statement presentation. The adoption of this
guidance did not have a material effect on our
financial statements.</font></p></td></tr></table>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for comprehensive income.No definition available.false0falseAccounting Policies, by Policy (Policies)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.TPLTrust.com/role/AccountingPoliciesByPolicy15