Write-Off of Deposit	3 Months Ended
Mar. 31, 2019
Banking and Thrift [Abstract]
Write-Off of Deposit	7. WRITE-OFF OF DEPOSIT In December 2017, the Company entered into a letter of intent with Clean Energy Technology Association, Inc. (“CETA”) to purchase an option to acquire 50 shares of CETA, or lease certain oil and natural gas properties inside an area of mutual interest. The Company made a $250 thousand option payment, which was refundable in the event that the Company and CETA were unable to complete the transaction by August 1, 2018. In February 2018, the Company paid an additional $124 thousand to CETA. In September 2019, the Company issued CETA a demand letter requesting return of the amounts deposited, at which time CETA made a partial payment of $50 thousand. While the Company is pursuing collection of the deposit, the Company has established an allowance for the remaining amount due from CETA of $324 thousand at March 31, 2019 due to the uncertainty of collection of the deposit. See Note 8-Commitments, Contingencies and Related-Party Transactions.

The entire disclosure for deposit liabilities including data and tables. It may include a description of the entity's deposit liabilities, the aggregate amount of time deposits (including certificates of deposit) in denominations of $100,000 or more at the balance sheet date; the aggregate amount of any demand deposits that have been reclassified as loan balances, such as overdrafts, at the balance sheet date; deposits that are received on terms other than those in the normal course of business, the amount of accrued interest on deposit liabilities; securities, mortgage loans or other financial instruments that serve as collateral for deposits; for time deposits having a remaining term of more than one year, the aggregate amount of maturities for each of the five years following the balance sheet date; and the weighted average interest rate for all deposit liabilities held by the entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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