Drilling Rigs

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

Sum of the carrying amounts of deferred costs that are expected to be recognized as a charge against earnings in periods after one year or beyond the normal operating cycle, if longer.

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- Definition

Sum of the carrying amounts as of the balance sheet date of deferred costs capitalized at the end of the reporting period that are expected to be charged against earnings within one year or the normal operating cycle, if longer.

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- Definition

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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- Definition

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method.

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Organization and Summary of Significant Accounting Policies (Revenues and Costs) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) drilling_rigs	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) drilling_rigs	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Deferred revenues \| $	$ 783		$ 783		$ 1,449
Drilling Services Segment [Member]
Drilling Rigs	24		24
Colombia [Member] \| Drilling Services Segment [Member]
Drilling Rigs	8		8
Colombia [Member] \| Earning Under Contract [Member] \| Currently Under Drilling Contract [Member] \| Drilling Services Segment [Member]
Drilling Rigs	5		5
Colombia [Member] \| Earning Under Contract [Member] \| Term Contract, Cancelable [Member] \| Currently Under Drilling Contract [Member] \| Drilling Services Segment [Member]
Drilling Rigs	4		4
Colombia [Member] \| SCR Drilling Rigs [Member] \| Drilling Services Segment [Member]
Drilling Rigs	8		8
United States [Member] \| Drilling Services Segment [Member]
Drilling Rigs	16		16
United States [Member] \| SCR Drilling Rigs [Member] \| Drilling Services Segment [Member]
Drilling Rigs	0		0
Geographic Distribution, Domestic [Member] \| Earning Under Contract [Member] \| Currently Under Drilling Contract [Member] \| Drilling Services Segment [Member]
Drilling Rigs	16		16
Geographic Distribution, Domestic [Member] \| Earning Under Contract [Member] \| Term Contract [Member] \| Currently Under Drilling Contract [Member] \| Drilling Services Segment [Member]
Drilling Rigs	13		13
Rig Mobilization [Member] \| Drilling Services Segment [Member]
Recognition of Deferred Revenue \| $	$ 562	$ 597	$ 1,859	$ 1,177
Capitalized Contract Cost, Amortization \| $	1,311	$ 795	3,997	$ 1,947
Deferred revenues \| $	783		783		1,449
Deferred Costs, Current \| $	1,360		1,360		2,290
Deferred Revenue, Noncurrent \| $	391		391		202
Deferred Costs, Noncurrent \| $	$ 162		$ 162		$ 212