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Revenue from Contracts with Customers (Notes)
12 Months Ended
Dec. 31, 2019
Revenue from Contracts with Customers [Abstract]  
Revenue from Contract with Customer [Text Block]
Revenue from Contracts with Customers
Our production services business segments earn revenues for well servicing, wireline services and coiled tubing services pursuant to master services agreements based on purchase orders or other contractual arrangements with the client. Production services jobs are generally short-term (ranging in duration from several hours to less than 30 days) and are charged at current market rates for the labor, equipment and materials necessary to complete the job. Production services jobs are varied in nature but typically represent a single performance obligation, either for a particular job, a series of distinct jobs, or a period of time during which we stand ready to provide services as our client needs them. Revenue is recognized for these services over time, as the services are performed.
Our drilling services business segments earn revenues by drilling oil and gas wells for our clients under daywork contracts. Daywork contracts are comprehensive agreements under which we provide a comprehensive service offering, including the drilling rig, crew, supplies, and most of the ancillary equipment necessary to operate the rig. Contract modifications that extend the term of a dayrate contract are generally accounted for prospectively as a separate dayrate contract. We account for our services provided under daywork contracts as a single performance obligation comprised of a series of distinct time increments which are satisfied over time. Accordingly, dayrate revenues are recognized in the period during which the services are performed.
With most drilling contracts, we also receive payments contractually designated for the mobilization and demobilization of drilling rigs and other equipment to and from the client’s drill site. Revenues associated with the mobilization and demobilization of our drilling rigs to and from the client’s drill site do not relate to a distinct good or service and are recognized ratably over the related contract term.
The amount of demobilization revenue that we ultimately collect is dependent upon the specific contractual terms, most of which include provisions for reduced (or no) payment for demobilization when, among other things, the contract is renewed or extended with the same client, or when the rig is subsequently contracted with another client prior to the termination of the current contract. Since revenues associated with demobilization activity are typically variable, at each period end, they are estimated at the most likely amount, and constrained when the likelihood of a significant reversal is probable. Any change in the expected amount of demobilization revenue is accounted for with the net cumulative impact of the change in estimate recognized in the period during which the revenue estimate is revised.
The upfront costs that we incur to mobilize the drilling rig to our client’s initial drilling site are capitalized and recognized ratably over the term of the related contract, including any contracted renewal or extension periods, which is our estimate of the period during which we expect to benefit from the cost of mobilizing the rig. Costs associated with the final demobilization at the end of the contract term are expensed when incurred, when the demobilization activity is performed.
From time to time, we may receive fees from our clients for capital improvements to our rigs to meet our client’s requirements. Such revenues are not considered to be distinct within the terms of the contract and are therefore allocated to the overall performance obligation, satisfied over the term of the contract. We record deferred revenue for such payments and recognize them ratably as revenue over the initial term of the related drilling contract.
We also act as a principal for certain reimbursable services and auxiliary equipment provided by us to our clients, for which we incur costs and earn revenues, many of which are variable, or dependent upon the activity that is actually performed each day under the related contract. Accordingly, reimbursements that we receive for out-of-pocket expenses are recorded as revenues and the out-of-pocket expenses for which they relate are recorded as operating costs during the period to which they relate within the series of distinct time increments.
All of our revenues are recognized net of sales taxes, when applicable.
Trade and Unbilled Accounts Receivable
We record trade accounts receivable at the amount we invoice to our clients. These accounts do not bear interest. The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in our accounts receivable as of the balance sheet date. We determine the allowance based on the credit worthiness of our clients and general economic conditions. Consequently, an adverse change in those factors could affect our estimate of our allowance for doubtful accounts.
Our production services terms generally provide for payment of invoices in 30 days. Our typical drilling contract provides for payment of invoices in 30 days, though the process for invoicing work performed in our international operations generally lengthens the billing cycle for those operations. We review our allowance for doubtful accounts on a monthly basis and balances more than 90 days past due are reviewed individually for collectability. We charge off account balances against the allowance after we have exhausted all reasonable means of collection and determined that the potential for recovery is remote. We do not have any off-balance sheet credit exposure related to our clients.
The changes in our allowance for doubtful accounts consist of the following (amounts in thousands):
 
Year ended December 31,
 
2019
 
2018
Balance at beginning of year
$
1,423

 
$
1,224

Increase (decrease) in allowance charged to expense
(167
)
 
271

Accounts charged against the allowance
(432
)
 
(72
)
Balance at end of year
$
824

 
$
1,423


Substantially all of our unbilled receivables represent revenues we have recognized in excess of amounts billed on drilling contracts. We typically bill our clients at 15-day intervals during the performance of daywork drilling contracts and upon completion of the daywork contract.
Contract Asset and Liability Balances and Contract Cost Assets
Contract asset and contract liability balances relate to demobilization and mobilization revenues, respectively. Demobilization revenue that we expect to receive is recognized ratably over the related contract term, but invoiced upon completion of the demobilization activity. Mobilization revenue, which is typically collected upon the completion of the initial mobilization activity, is deferred and recognized ratably over the related contract term. Contract asset and liability balances are netted at the contract level, with the net current and noncurrent portions separately classified in our consolidated balance sheets, and referred to herein as “deferred revenues.”
Contract cost assets represent the costs associated with the initial mobilization required in order to fulfill the contract, which are deferred and recognized ratably over the period during which we expect to benefit from the mobilization, or the period during which we expect to satisfy the performance obligations of the related contract. Contract cost assets are presented as either current or noncurrent, according to the duration of the original contract to which it relates, and referred to herein as “deferred costs.”
Our current and noncurrent deferred revenues and costs as of December 31, 2019 and 2018 were as follows (amounts in thousands):
 
As of December 31,
 
2019
 
2018
Current deferred revenues
$
1,339

 
$
1,722

Current deferred costs
1,071

 
1,543

 
 
 
 
Noncurrent deferred revenues
$
57

 
$
437

Noncurrent deferred costs
267

 
679


The changes in deferred revenue and cost balances during the year ended December 31, 2019 are primarily related to the amortization of deferred revenues and costs during the period, mostly offset by increased deferred revenue and cost balances for the deployment of rigs under new contracts in 2019 as well as an increase in deferred revenues associated with a prepayment made by one of our international clients. Amortization of deferred revenues and costs during the years ended December 31, 2019 and 2018 were as follows (amounts in thousands):
 
Year ended December 31,
 
2019
 
2018
Amortization of deferred revenues
$
6,203

 
$
2,961

Amortization of deferred costs
4,786

 
2,855


In 2019, three of our domestic clients elected to early terminate their contract with us and make an upfront early termination payment based on a per day rate for the respective remaining contract term, resulting in $3.1 million of revenues recognized during 2019. As of December 31, 2019, 18 of our 25 rigs are earning under daywork contracts, 12 of which are domestic term contracts, and 2 international rigs are currently on standby under term contracts.
Unlike our domestic term contracts, our international drilling contracts are cancelable by our clients without penalty, although the contracts require 15 to 30 days notice and payment for demobilization services. The spot contracts for our domestic drilling rigs are also terminable by our client with 30 days notice and include a required payment for demobilization services. Revenues associated with the initial mobilization and/or demobilization of drilling rigs under cancelable contracts are deferred and recognized ratably over the anticipated duration of the original contract, which is the period during which we expect our client to benefit from the mobilization of the rig, and represents a separate performance obligation because the payment for mobilization and/or demobilization creates a material right to our client during the cancelable period, for which the transaction price is allocated to the optional goods and services expected to be provided.
Remaining Performance Obligations
We have elected to apply the practical expedients in ASC Topic 606, Revenue from Contracts with Customers, which allow entities to omit disclosure of (i) the transaction price allocated to the remaining performance obligations associated with short-term contracts, and (ii) the estimated variable consideration related to wholly unsatisfied performance obligations, or to distinct future time increments within a series of performance obligations. Therefore, we have not disclosed the remaining amount of fixed mobilization revenue (or estimated future variable demobilization revenue) associated with short-term contracts, and we have not disclosed an estimate of the amount of future variable dayrate drilling revenue. However, the amount of fixed mobilization revenue associated with remaining performance obligations is reflected in the net unamortized balance of deferred mobilization revenues, which is presented in both current and noncurrent portions in our consolidated balance sheet, and discussed in more detail in the section above entitled, Contract Asset and Liability Balances and Contract Cost Assets.
Disaggregation of Revenue
ASC Topic 606 requires disclosure of the disaggregation of revenue into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. We believe the disclosure of revenues by operating segment achieves the objective of this disclosure requirement. See Note 12, Segment Information, for the disaggregation of revenues by operating segment, which reflects the disaggregation of revenues by the type of services provided and by geography (international versus domestic).
Concentration of Clients
We derive a significant portion of our revenue from a limited number of major clients. For the years ended December 31, 2019 and 2018, our drilling and production services provided to our top three clients accounted for approximately 18% and 20%, respectively, of our revenue.