14. Revenue Recognition

CRA offers consulting services in two broad areas: litigation, regulatory, and financial consulting and management consulting. Together, these two service areas comprised all of CRA's consolidated revenues during the fiscal quarter ended March 31, 2018. CRA recognizes all project revenue on a gross basis based on consideration of the criteria set forth in ASC Topic 606-10-55, Principal versus Agent Considerations.

CRA evaluates its revenue contracts with customers based on the five-step model under ASC 606: (1) Identify the contract with the customer; (2) Identify the performance obligations in the contract; (3) Determine the transaction price; (4) Allocate the transaction price to separate performance obligations; and (5) Recognize revenue when (or as) each performance obligation is satisfied. CRA evaluates its contracts for legal enforceability at contract inception and subsequently throughout the CRA's relationship with its customers. If legal enforceability with regards to the rights and obligations exist for both CRA and the customer, then CRA has an enforceable contract and revenue recognition is permitted subject to the satisfaction of the other criteria. If, at the outset of an arrangement, CRA determines that a contract with enforceable rights and obligations does not exist, revenues are deferred until all criteria for an enforceable contract are met.

Revenue is recognized when, or as, obligations under the terms of a contract are satisfied, which occurs when control of the promised consulting services are transferred to customers. Revenue is measured as the amount of consideration CRA expects to receive in exchange for transferring consulting services to a customer ("transaction price"). To the extent the transaction price includes variable consideration, CRA estimates the amount of variable consideration that should be included in the transaction price utilizing the most likely amount to which it expects to be entitled. Variable consideration is included in the transaction price if, in CRA's judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur. Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of CRA's anticipated performance and all information (historical, current and forecasted) that is reasonably available. Sales, value add, and other taxes collected on behalf of third parties are excluded from revenue.

When determining the transaction price of a contract, an adjustment is made if payment from a customer occurs either significantly before or significantly after performance, resulting in a significant financing component. Applying the practical expedient in paragraph 606-10-32-18, CRA does not assess whether a significant financing component exists if the period between when it performs its obligations under the contract and when the customer pays is one year or less. None of the CRA's contracts contained a significant financing component as of March 31, 2018.

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised consulting services underlying each performance obligation. CRA determines standalone selling prices based on the price at which the performance obligation is sold separately. If the standalone selling price is not observable through past transactions, CRA estimates the standalone selling price considering all available information such as market conditions and internally approved pricing guidelines related to the performance obligations.

Contracts are often modified to account for changes in project scope. Contract modifications exist when the modification either creates new or changes the existing enforceable rights and obligations. Generally, contract modifications for consulting services are not distinct from the existing contract as the modification expands CRA's consulting services and thus are accounted for as if they were part of that existing contract. The effect of a contract modification on the transaction price and measure of progress for the performance obligation to which it relates is recognized as an adjustment to revenue on a cumulative catch-up basis.

Consulting services revenue is generally recognized over time as the services are delivered to the customer based on the extent of progress towards completion of the performance obligation. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the consulting services to be provided. Depending on which better depicts the transfer of value to the customer, CRA generally measures its progress using either right-to-invoice for time and materials projects, or cost-to-cost for fixed-price projects. CRA uses the right-to-invoice measure of progress when it has a right to invoice the customer for an amount that corresponds directly with the value to the customer of its performance to date. Under the right-to-invoice measure of progress, revenues are recorded equal to the amount CRA could invoice the customer. CRA uses the cost-to-cost measure of progress when it best depicts the transfer of value to the customer which occurs as it incurs costs on its contract. Under the cost-to-cost measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred.

Consulting Services Revenues

The contracts CRA enters into and operates under specify whether the engagements are billed on a time-and-materials or a fixed-price basis. Most of CRA's revenue is derived from time-and-materials service contracts. Revenues from time-and-materials service contracts are recognized as services are provided based upon hours worked and contractually agreed-upon hourly rates, as well as indirect fees based upon hours worked. Revenues from a majority of CRA's fixed-price engagements are recognized on a proportional performance method based on the ratio of costs incurred (input method), substantially all of which are labor-related, to the total estimated project costs. In general, project costs are classified in costs of services and are based on the direct salary of our employee consultants on the engagement plus all direct expenses incurred to complete the engagement, including any amounts billed to CRA by its non-employee experts.

Disaggregation of Revenue

The following table disaggregates CRA's revenue by major business line and timing of transfer of its consulting services. Refer to Note 12 to CRA's consolidated financial statements included in the annual report on Form 10-K for fiscal 2017, which was filed with the SEC on March 12, 2018, for further detail on revenues by geographical location (in thousands).

	Fiscal Quarter Ended
	March 31, 2018		April 1, 2017(1)
Type of Contract
Consulting services revenues
Fixed Price	$	20,714	$	18,774
Time-and-materials		78,762		69,397

Total	$	99,476	$	88,171

	Fiscal Quarter Ended
	March 31, 2018		April 1, 2017(1)
Geographic Breakdown
Consulting services revenues
United States	$	76,860	$	72,628
United Kingdom		17,505		10,542
Other		5,111		5,001

Total	$	99,476	$	88,171


(1)	As noted above, prior period amounts have not been adjusted under the modified retrospective method.

Reserves for Variable Consideration and Credit Risk

Revenues from our consulting services are recorded at the net sales price, or transaction price, which includes estimates of variable consideration for which reserves are established and result from price concessions that are extended to our customers. These reserves on the variable consideration components subject to constraint are classified as reductions of accounts receivable. These calculated estimates take into consideration CRA's historical experiences of prior period revenues which were subsequently reversed due to these price concessions. Overall, these reserves reflect CRA's best estimates of the amount of consideration to which it is entitled based on the terms of its contracts with its customers. The amount of variable consideration which is included in the transaction price may be constrained, and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period. Actual amounts of consideration ultimately received may differ from its estimates. If actual results in the future vary from the its estimates, CRA adjusts these estimates, which would affect net revenue and earnings in the period such variances become known.

CRA's billed and unbilled receivables consist of receivables from a broad range of clients in a variety of industries located throughout the U.S. and in other countries. CRA performs a credit evaluation of its clients to minimize its collectability risk. Periodically, CRA will require advance payment from certain clients. However, CRA does not require collateral or other security. CRA maintains accounts receivable allowances for estimated losses and disputed amounts resulting from clients' failures to make required payments. CRA bases its estimates on historical collection experience, current trends, and credit policy. In determining these estimates, CRA examines historical write-offs of its receivables and reviews client accounts to identify any specific customer collection issues. If the financial condition of any of CRA's customers were to deteriorate, resulting in an impairment of their ability or intent to make payment, additional allowances may be required.

Generally, accounts and unbilled receivables allowances are recorded as a reduction to revenues. During the first quarter of 2018, $0.3 million was recorded as a bad debt expense and reported as a component of selling, general and administrative expenses related to credit-related losses.

Revenues also include reimbursable expenses, which include travel and other out-of-pocket expenses, outside consultants, and other reimbursable expenses. Reimbursable expenses are as follows (in thousands):

	Fiscal Quarter Ended
	March 31, 2018		April 1, 2017
Reimbursable expenses	$	11,229	$	9,140

CRA collects goods and services and value added taxes from customers and records these amounts on a net basis, which is within the scope of ASC Topic 606-10-55, Principal versus Agent Considerations.

Transaction Price Allocated to Future Performance Obligations

ASC 606 requires that CRA disclose the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied as of March 31, 2018. The guidance provides certain practical expedients that limit this requirement for (1) contracts with an original expected length of one year or less and (ii) contracts for which revenue is recognized at the amount to which CRA has the right to invoice for consulting services performed. Given the nature of its business, CRA does not disclose the value of unsatisfied performance obligations as the practical expedients apply to its unsatisfied performance obligations as of March 31, 2018.

Contract Balances from Contracts with Customers

The following table presents changes in CRA's contract assets and contract liabilities during the fiscal quarter ended March 31, 2018 (in thousands):

Fiscal Quarter Ended March 31, 2018	Balance at Beginning of Period		Additions		Deductions		Balance at End of Period
Contract assets:
Accounts receivable	$	87,181	$	97,956	$	100,721	$	84,416
Allowance for doubtful accounts		7,378		1,031		1,497		6,912

Accounts receivable, net of allowances	$	79,803	$	96,925	$	99,224	$	77,504


Unbilled services	$	35,276	$	148,308	$	138,238	$	45,346
Unbilled receivables allowance		1,746		1,583		670		2,659

Unbilled services, net of allowances	$	33,530	$	146,725	$	137,568	$	42,687


Contract liabilities:
Deferred revenue	$	6,896	$	15,301	$	17,399	$	4,798

During the fiscal quarter ended March 31, 2018, CRA recognized the following revenue as a result of changes in the contract asset and the contract liability balances (in thousands):

	March 31, 2018
Revenue recognized in the period from:
Amounts included in the contract liability at the beginning of the period	$	2,858
Performance obligations satisfied in previous periods	$	2,135

The timing of revenue recognition, billings and cash collections results in billed receivables, contract assets and contract liabilities on the condensed consolidated balance sheets.

When consideration is received, or such consideration is unconditionally due from a customer prior to transferring consulting services to the customer under the terms of a contract, a contract liability is recorded. Contract liabilities are recognized as revenue after control of the consulting services are transferred to the customer and all revenue recognition criteria have been met.

Costs to Obtain or Fulfill a Customer Contract

Prior to the adoption of ASC 606, CRA expensed bonuses paid to its employees. Under ASC 606, bonuses are not linked or paid based on specific contract billings or revenues and therefore do not represent incremental costs of obtaining a contract with a customer. Furthermore, even if the bonuses paid were incremental, the practical expedient in paragraph 340-40-25-4 would apply, allowing for incremental costs of obtaining contracts to be expensed as incurred if the amortization period of the assets that it otherwise would have recognized is one year or less. As such, these costs are included in both cost of services and selling, general, and administrative expenses.