Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current
Cash and cash equivalents	$ 66	$ 40
Accounts receivable, less allowance for doubtful accounts of $14	525	446
Accounts receivable - related party, less allowance for doubtful accounts of $159
Inventory	673	542
Other current assets	254	354
Total current assets	1,518	1,382
Oil and gas properties, net (full cost accounting method)	6,450	8,838
Manufactured Methane facilities, net	1,578	1,573
Other property and equipment, net	174	200
Total assets	9,720	11,993
Current liabilities
Accounts payable - trade	241	151
Accounts payable - other	159	159
Accounts payable - related party		634
Accrued and other current liabilities	200	356
Current maturities of long-term debt	61	65
Total current liabilities	661	1,365
Asset retirement obligation	2,246	2,222
Long term debt, less current maturities	2,376	946
Total liabilities	5,283	4,533
Commitments and contingencies (Note 11)
Stockholders' equity
Common stock, $.001 par value, authorized 100,000,000 shares, 6,088,594 and 6,084,241 shares issued and outstanding	6	6
Additional paid-in capital	55,778	55,770
Accumulated deficit	(51,347)	(48,316)
Total stockholders' equity	4,437	7,460
Total liabilities and stockholders' equity	$ 9,720	$ 11,993

Methane Project, Net

No definition available.

Name:	tgc_MethaneProjectNet
Namespace Prefix:	tgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).