Organization and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Valuation and Qualifying Accounts Disclosure [Line Items]

Schedule of Drilling Long-Lived Assets, by Type [Table Text Block]

Our drilling rig fleet is 100% pad-capable and consists of the following:

	Multi-well, Pad-capable
	AC rigs	SCR rigs	Total
U.S. rigs	16	—	16
Colombia rigs	—	8	8
			24

Schedule of Production Services Long-Lived Assets, by Type [Table Text Block]

As of September 30, 2017, our production services fleets are as follows:

	550 HP	600 HP	Total
Well servicing rigs, by horsepower (HP) rating	113	12	125
	Onshore	Offshore	Total
Wireline units	111	6	117
Coiled tubing units	10	4	14

Amortization of Deferred Revenue and Costs [Table Text Block]

Amortization of deferred revenues and costs during the three and nine months ended September 30, 2017 and 2016 (amounts in thousands) were as follows:

	Three months ended September 30,				Nine months ended September 30,
	2017		2016		2017		2016
Deferred revenues	$	562	$	597	$	1,859	$	1,177
Deferred costs	1,311		795		3,997		1,947

Schedule of Deferred Revenues and Costs [Table Text Block]

Our current and long-term deferred revenues and costs as ofSeptember 30, 2017 and December 31, 2016were as follows (amounts in thousands):

	September 30, 2017		December 31, 2016
Current:
Deferred revenues	$	783	$	1,449
Deferred costs	1,360		2,290
Long-term:
Deferred revenues	$	391	$	202
Deferred costs	162		212

Unbilled Receivables [Table Text Block]

Our unbilled receivables as of September 30, 2017 and December 31, 2016were as follows (amounts in thousands):

	September 30, 2017		December 31, 2016
Daywork drilling contracts in progress	$	13,391	$	7,042
Production services	877		375
	$	14,268	$	7,417