CDI Inactive 10-K6 Mar 142013 FY Annual reportFinancial data

Company Profile

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013	Feb. 27, 2014	Feb. 27, 2014
	Dec. 31, 2013	Jun. 30, 2013	Common Class A [Member]	Common Class B
Document and Entity Information	'	'	'	'
Entity Registrant Name	'CDI CORP	'	'	'
Entity Central Index Key	'0000018396	'	'	'
Current Fiscal Year End Date	'--12-31	'	'	'
Entity Filer Category	'Accelerated Filer	'	'	'
Document Type	'10-K	'	'	'
Document Period End Date	31-Dec-13	'	'	'
Document Fiscal Year Focus	'2013	'	'	'
Document Fiscal Period Focus	'FY	'	'	'
Amendment Flag	'false	'	'	'
Reporting Status	'Yes	'	'	'
Voluntary Filers	'No	'	'	'
Well Known Seasoned Issuer	'No	'	'	'
Entity Common Stock, Shares Outstanding	'	'	19,500,263	0
Public Float	'	$204.30	'	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:	'	'
Cash and cash equivalents	$45,479	$43,652
Accounts receivable, net of allowances of $2,893 and $2,563	230,613	223,630
Prepaid expenses and other current assets	8,033	10,515
Prepaid income taxes	2,378	698
Deferred income taxes	4,724	3,850
Total current assets	291,227	282,345
Property and equipment, net of accumulated depreciation of $82,512 and $75,159	20,528	22,090
Deferred income taxes	5,260	7,061
Goodwill	62,280	62,009
Other intangible assets, net	15,157	16,782
Other non-current assets	11,355	10,418
Total assets	405,807	400,705
Current liabilities:	'	'
Short-term borrowings	2,812	2,751
Accounts payable	38,019	41,157
Accrued compensation and related expenses	46,123	43,571
Other accrued expenses and other current liabilities	16,037	14,970
Income taxes payable	245	1,759
Total current liabilities	103,236	104,208
Deferred compensation	9,393	8,398
Deferred income tax	2,994	1,875
Other non-current liabilities	5,010	6,444
Total liabilities	120,633	120,925
Commitments and contingencies	'	'
Equity:	'	'
Preferred stock, $0.10 par value - authorized 1,000 shares; none issued	0	0
Common stock	2,196	2,182
Additional paid-in-capital	70,104	67,863
Retained earnings	265,207	259,912
Accumulated other comprehensive (loss) income	-712	1,501
Common stock in treasury, at cost - 2,463 shares	-52,487	-52,487
Total CDI shareholders' equity	284,308	278,971
Noncontrolling interest	866	809
Total equity	285,174	279,780
Total liabilities and equity	405,807	400,705
Common Class B	'	'
Equity:	'	'
Common stock	$0	$0

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts receivable, allowance for doubtful accounts	$2,893	$2,563
Property and equipment, depreciation	$82,512	$75,159
Preferred stock, par value	$0.10	$0.10
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$0.10	$0.10
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	21,957,504	21,821,631
Treasury stock, shares	2,462,758	2,462,758
Common Class B	'	'
Common stock, par value	$0.10	$0.10
Common stock, shares authorized	3,175,000	3,175,000
Common stock, shares issued	0	0

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), Net of Tax [Abstract]	'	'	'
Net income	$12,948	$19,433	$15,000
Other comprehensive income (loss):	'	'	'
Foreign currency translation adjustments	-2,220	1,843	-473
Total comprehensive income	10,728	21,276	14,527
Less: Comprehensive income attributable to the noncontrolling interest	57	353	111
Total comprehensive income attributable to CDI	$10,671	$20,923	$14,416

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Statement [Abstract]	'		'		'
Revenue	$1,087,859		$1,104,958		$1,059,803
Cost of services	881,218		885,549		834,502
Gross profit	206,641		219,409		225,301
Operating and administrative expenses	180,009	[1],[2]	187,143		196,826
Restructuring and other related costs	5,716		0		8,100
Operating profit	20,916	[3],[4],[5]	32,266	[4],[5]	20,375	[4],[5]
Other income (expense), net	-268		-251		-245
Income before income taxes	20,648		32,015		20,130
Income tax expense	7,700		12,582		5,130
Net income	12,948		19,433		15,000
Less: Income attributable to the noncontrolling interest	64		317		167
Net income attributable to CDI	$12,884		$19,116		$14,833
Basic (in dollars per share)	$0.66		$0.99		$0.77
Diluted (in dollars per share)	$0.65		$0.97		$0.77

[1]	In 2013, the Company's GETS segment recorded a $1.8 million benefit to "Operating and administrative expenses" related to the reduction of an acquisition-related earnout liability (by quarter: first $0.3 million, second $0.4 million, third $0.5 million and fourth $0.6 million.)
[2]	In the fourth quarter of 2013, the Company recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.
[3]	In the fourth quarter of 2013, the Company recorded a $5.7 million charge to "Restructuring and other related costs" related to the 2013 Restructuring Plan.
[4]	In 2013 and 2011, the Company recorded pre-tax charges of $5.7 million and $8.1 million, respectively, to "Restructuring and other related costs" related to the 2013 and 2011 Restructuring Plans. The following table summarizes the amount of restructuring and other related costs recognized by reporting segment for the indicated periods: Year ended December 31, 2013B 2012B 2011 GETSB $2,132B $bB $4,467PSSB 2,394B bB 2,622MRIB 215B bB 372CorporateB 975B bB 639Restructuring and other related costsB $5,716B $bB $8,100
[5]	In 2011, the Company's PSS segment recorded a $9.7 million benefit to "Operating and administrative expenses" related to the successful legal appeal of the UK OFT matter.

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities:	'	'	'
Net income	$12,948	$19,433	$15,000
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation	8,721	8,959	9,640
Amortization	1,625	1,306	1,368
Deferred income taxes	1,986	6,186	433
Share-based compensation	2,827	3,414	3,358
Non-cash reduction in legal reserves	0	0	-9,698
Loss on disposal of assets, net	317	492	1,170
Changes in operating assets and liabilities:	'	'	'
Accounts receivable, net	-9,301	18	-103
Prepaid expenses and other current assets	2,488	262	-1,560
Accounts payable	-4,751	4,891	3,019
Accrued expenses and other current liabilities	3,823	-8,762	4,543
Income taxes prepaid/payable	-3,505	-351	1,638
Other non-current assets	388	-1,719	261
Deferred compensation	-32	579	-189
Other non-current liabilities	-1,434	2,429	-878
Net cash provided by operating activities	16,100	37,137	28,002
Investing activities:	'	'	'
Additions to property and equipment	-7,529	-6,225	-5,658
Reacquired franchise rights	0	-65	-372
Other	142	-344	170
Net cash used in investing activities	-7,387	-6,634	-5,860
Financing activities:	'	'	'
Dividends paid to shareholders	-7,589	-12,548	-9,956
Payment of acquisition-related earnout	0	-370	0
Borrowings on credit facility	77,619	206,674	429,614
Repayments of Debt	-77,405	-203,923	-443,514
Change in book overdraft	1,709	-3,363	393
Common shares withheld for taxes	-858	-900	-551
Excess tax benefit from share-based compensation awards	143	387	0
Net cash used in financing activities	-6,381	-14,043	-24,014
Effect of exchange rate changes on cash and cash equivalents	-505	548	-230
Net increase (decrease) in cash and cash equivalents	1,827	17,008	-2,102
Cash and cash equivalents at beginning of period	43,652	26,644	28,746
Cash and cash equivalents at end of period	45,479	43,652	26,644
Supplemental disclosure of cash flow information:	'	'	'
Cash paid for interest	133	202	333
Cash paid for income taxes, net	$9,384	$6,591	$3,213

Consolidated_Statements_Of_Sha

Consolidated Statements Of Shareholders' Equity (USD $)	Total	Total CDI Shareholders' Equity [Member]	Common Stock	Treasury Stock	Additional Paid-In-Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
In Thousands, unless otherwise specified	Total	Total CDI Shareholders' Equity [Member]	Common Stock	Treasury Stock	Additional Paid-In-Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Beginning balance at Dec. 31, 2010	$258,927	$258,582	$2,153	($52,487)	$60,338	$248,467	$111	$345
Beginning balance (shares) at Dec. 31, 2010	'	'	21,531	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	15,000	14,833	'	'	'	14,833	'	167
Translation adjustments	-473	-417	'	'	'	'	-417	-56
Share-based compensation expense	3,358	3,358	'	'	3,358	'	'	'
Reclassification of equity awards from liabilities, net	726	726	'	'	726	'	'	'
Proceeds from exercise of stock options (shares)	'	'	149	'	'	'	'	'
Vesting of equity awards	0	0	15	'	-15	'	'	'
Common shares withheld for taxes (shares)	'	'	-38	'	'	'	'	'
Common shares withheld for taxes	-551	-551	-4	'	-547	'	'	'
Cash dividends paid	-9,956	-9,956	'	'	'	-9,956	'	'
Ending balance at Dec. 31, 2011	267,031	266,575	2,164	-52,487	63,860	253,344	-306	456
Ending balance (shares) at Dec. 31, 2011	'	'	21,642	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	19,433	19,116	'	'	'	19,116	'	317
Translation adjustments	1,843	1,807	'	'	'	'	1,807	36
Share-based compensation expense	3,414	3,414	'	'	3,414	'	'	'
Share-based compensation tax shortfall, net	50	50	'	'	50	'	'	'
Reclassification of equity awards from liabilities, net	1,457	1,457	'	'	1,457	'	'	'
Vesting of equity awards (shares)	'	'	235	'	'	'	'	'
Common shares withheld for taxes	0	0	24	'	-24	'	'	'
Common shares withheld for taxes (shares)	'	'	-55	'	'	'	'	'
Common shares withheld for taxes	-900	-900	-6	'	-894	'	'	'
Cash dividends paid	-12,548	-12,548	'	'	'	-12,548	'	'
Ending balance at Dec. 31, 2012	279,780	278,971	2,182	-52,487	67,863	259,912	1,501	809
Ending balance (shares) at Dec. 31, 2012	'	'	21,822	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	12,948	12,884	'	'	'	12,884	'	64
Translation adjustments	-2,220	-2,213	'	'	'	'	-2,213	-7
Share-based compensation expense	2,827	2,827	'	'	2,827	'	'	'
Share-based compensation tax shortfall, net	-50	-50	'	'	-50	'	'	'
Reclassification of equity awards from liabilities, net	336	336	'	'	336	'	'	'
Vesting of equity awards (shares)	'	'	189	'	'	'	'	'
Common shares withheld for taxes	0	0	19	'	-19	'	'	'
Common shares withheld for taxes (shares)	'	'	-53	'	'	'	'	'
Common shares withheld for taxes	-858	-858	-5	'	-853	'	'	'
Cash dividends paid	-7,589	-7,589	'	'	'	-7,589	'	'
Ending balance at Dec. 31, 2013	$285,174	$284,308	$2,196	($52,487)	$70,104	$265,207	($712)	$866
Ending balance (shares) at Dec. 31, 2013	'	'	21,958	'	'	'	'	'

Consolidated_Statements_Of_Sha1

Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Cash dividends declared (In dollars per share)	$0.39	$0.65	$0.52

Significant_Accounting_Policie

Significant Accounting Policies

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Significant Accounting Policies

Organization - CDI Corp. and its subsidiaries (the “Company” or “CDI”) is an integrated engineering and technology services organization providing client-focused solutions in select global industries. The Company provides engineering and information technology (IT) solutions and staffing services to clients in the Oil, Gas and Chemical (OGC), Aerospace and Industrial Equipment (AIE), and Hi-Tech industry verticals as well as in "Other" industry verticals that primarily include the infrastructure, U.S. defense, transportation and financial services industries. The Company derives most of its revenue by providing these services to large and mid-sized companies located primarily in the United States (U.S.), Canada and the United Kingdom (UK).

Basis of Presentation - The consolidated financial statements of the Company and the accompanying notes are prepared in accordance with U.S. generally accepted accounting principles (GAAP).

Principles of Consolidation - The consolidated financial statements include the accounts of CDI Corp. and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.

Use of Estimates - The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts disclosed in the financial statements and accompanying notes. Estimates, by their nature, are based on judgment and available information. Actual results could differ materially from those estimates.

Significant estimates inherent in the preparation of the accompanying consolidated financial statements include the assumptions used in the determination of the allowance for doubtful accounts receivable, impairment assessment of goodwill, determination of the recoverability of long-lived assets, assessment of legal contingencies and calculation of income taxes.

Reclassifications - For comparative purposes, certain amounts have been reclassified to conform to the current period presentation.

Revenue Recognition - Revenue is presented net of any revenue-based taxes, such as sales, use, excise and value added taxes. The Company derives its revenue from several sources. Each of the Company’s three segments provide staffing services. The Company’s Global Engineering Technology Solutions (GETS) segment also provides project and outsourcing services, which include cost-plus and fixed-price contracts, and permanent placement services. The Company’s Management Recruiters International (MRI) segment also generates franchising revenue through royalties and, to a lesser extent, initial franchise fees.

Staffing Services - The Company recognizes revenue from staffing services based on the gross amount billed. The Company typically bills its clients once services are performed and associated costs have been incurred. In these circumstances, the Company assumes the risk of acceptability of its employees to its clients. The Company will also at times use unaffiliated companies (supplier associates) and their employees to fulfill a client’s staffing requirements either in whole or in part. Under these arrangements, these firms serve as subcontractors. Clients typically require a single consolidated bill that reflects services performed by both the Company’s employees and the employees of any applicable supplier associates. When utilizing supplier associates, the Company records the difference between its gross billings and the amount paid to the supplier associate as revenue, which is generally referred to as an administrative fee. Administrative and clerical costs related to time accumulation, invoicing and other activities are recorded and included in operating and administrative expenses as incurred.

Project and Outsourcing Services - The Company recognizes revenue from project and outsourcing services as the services are performed. Revenue for these services is generally based on mark-ups of the Company's employees' hourly rates of pay or on a cost plus fixed fee basis. Information technology (IT) outsourcing service contracts generally include the performance of certain computer or network operations or service-desk support on behalf of clients. These IT outsourcing service contracts typically contain an invoicing schedule covering the contractual period. Accordingly, the Company recognizes revenue on a pro-rata basis using elapsed time as the measure of performance under these IT outsourcing service contracts. The Company derives less than 5% of its revenue from fixed-price contracts. Fixed-price engineering contracts typically include development of conceptual and detailed designs in support of a client's construction of tangible property. The Company recognizes revenue for fixed-price contracts under the percentage-of-completion method based generally on the proportion of total direct labor costs incurred to total estimated direct labor costs. When total estimated costs indicate a loss, the Company will recognize the full amount of that loss immediately.

Permanent Placement Services - These services include the search for and recruitment of candidates for employment with the Company’s clients. Generally, the Company performs permanent placement services on a non-exclusive, contingency basis. Revenue is recognized only after successfully placing a recommended candidate.

Franchise Royalties - MRI’s rights to franchise royalties are governed by the provisions of its franchise contracts. Under the franchise contracts, the franchisees remit to the Company a contractual percentage of fees collected from their clients. The Company records franchise royalty revenue as fees are collected by the franchisee and they become a receivable from the franchisee.

Franchise Fees - The Company recognizes fees related to sales of new MRI franchises and master franchise agreements when the Company has substantially fulfilled its requirements under the respective franchise agreement.

Off-Balance Sheet Risk - The Company is exposed to risks associated with fluctuations in foreign currency exchange rates because the transactions of its foreign operations are primarily denominated in British pounds sterling and Canadian dollars. Exchange rate fluctuations impact the U.S. dollar value of reported earnings derived from these foreign operations as well as the Company’s investment in the net assets related to these foreign operations.

Foreign Currency - Foreign subsidiaries of the Company use local currency as the functional currency. Net assets are translated at year-end exchange rates while revenue and expenses are translated at average monthly exchange rates. Adjustments resulting from these translations are reflected in “Accumulated other comprehensive (loss) income” in the equity section of the consolidated balance sheets. Gains and losses arising from foreign currency transactions are reflected in “Other income (expense), net” in the consolidated statements of operations.

Concentrations of Credit Risk - The Company’s principal asset is its accounts receivable. Substantially all of the Company’s clients are provided trade credit. The Company’s clients are primarily large and mid-sized organizations. The Company performs ongoing credit evaluations of its clients and maintains allowances for potential credit losses. The Company considers a number of factors in determining the allowance for doubtful accounts receivable, including an assessment of client-specific information, the Company’s historical experience, the age of the receivable and current market and economic conditions.

The following table summarizes the changes in the allowance for doubtful accounts receivable for the indicated periods:

Balance at beginning of year

Additions charged to earnings

Uncollectible receivables written off, net of recoveries

Balance at

end of year

31-Dec-13

2,563

1,442

(1,112

)

2,893

31-Dec-12

3,698

637

(1,772

)

2,563

31-Dec-11

5,339

428

(2,069

)

3,698

One client accounted for approximately 20% and 22% of total accounts receivable as of December 31, 2013 and 2012, respectively.

The Company’s cash and cash equivalents are held in money market mutual funds and in accounts at major banks and financial institutions located primarily in Canada, the U.S. and the UK.

Income Taxes - The Company accounts for income taxes using the asset and liability method. Under this method, income taxes are provided for amounts currently payable and for amounts deferred as tax assets and liabilities based on differences between the financial statement carrying amounts and tax basis of its assets and liabilities. In establishing its deferred income tax assets and liabilities, the Company makes judgments and interpretations based on the enacted tax laws and published tax guidance. The Company records deferred tax assets and liabilities and evaluates the need for valuation allowances to reduce the deferred tax assets to realizable amounts. The likelihood of a material change in the Company’s expected realization of these assets is dependent on future taxable income, its ability to use tax credit carry forwards and carry backs, final tax settlements and the effectiveness of its tax planning strategies in the various tax jurisdictions in which it operates. The Company recognizes the effect of income tax positions only if those positions are more likely than not to be sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely to be realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. See Note 9—Income Taxes.

Cash and Cash Equivalents - Cash equivalents include highly liquid investments that mature within 90 days from the date of investment. The Company funds its disbursement accounts daily as checks are presented for payment. Book overdrafts represent outstanding checks that have not been presented for payment, net of cash in accounts with the right of offset. Book overdrafts are reported in “Accounts payable” in the consolidated balance sheet and the change in book overdrafts are reported in financing activities of the consolidated statement of cash flows.

Fair Value of Financial Instruments - The net carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and short-term debt approximate their fair value due to the short-term nature of these instruments as well as the variable interest rate for short-term borrowings.

For financial assets and liabilities measured at fair value on a recurring basis, fair value is the price the Company would receive to sell an asset or pay to transfer a liability in an orderly transaction with a market participant at the measurement date. A three-level fair value hierarchy prioritizes the inputs used to measure fair value as follows: Level 1—quoted prices in active markets for identical instruments; Level 2—quoted prices in active markets for similar instruments, quoted prices for identical instruments in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the instrument; and Level 3—significant inputs to the valuation model are unobservable.

Property and Equipment - Property and equipment are recorded at cost. Depreciation expense for financial reporting purposes is computed using the straight-line method over the following useful lives:

Computer equipment 4 years

Equipment and furniture 4-10 years

Software 4-7 years

Leasehold improvements Shorter of lease term or useful life

The Company capitalizes direct costs incurred in the development of internal-use software in the application development stage of software development.

Goodwill and Other Intangible Assets - Goodwill represents the excess of the purchase price over the estimated fair market value of identifiable net assets at the date of acquisition in a business combination. Other intangible assets are identifiable assets that lack physical substance, which are acquired as part of a business combination or other transaction. Intangible assets with definite lives are amortized on a straight-line basis over their useful lives. Goodwill and other intangible assets with indefinite lives are not amortized and are tested for impairment at least annually. The Company performs its annual assessment for impairment of goodwill and other indefinite-lived intangible assets as of July 1 of each fiscal year, or whenever events occur or circumstances indicate that it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is below its carrying value.

The Company has the option to perform a qualitative assessment for impairment of its goodwill and indefinite-lived intangible assets to determine if it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is below its carrying value. If the Company determines based on a qualitative assessment that it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is greater than its carrying value, then it would not be required to perform the two-step quantitative impairment test described below. If necessary, the Company will perform a quantitative assessment for impairment of its goodwill and indefinite-lived intangible assets using the two-step approach.

The first step of the quantitative impairment test requires that the Company determine the fair value of each reporting unit and then compare that fair value to the reporting unit’s carrying amount. The Company uses the income approach to determine the fair value of its reporting units. The Company applies a valuation technique consistent with the income approach to measure the fair value of its indefinite-lived intangible assets. The income approach is based on the present value of estimated discounted cash flows and terminal value projected for each reporting unit. The income approach requires significant judgments, including the projected results of operations, the weighted-average cost of capital (WACC) used to discount the cash flows and terminal value assumptions. The projected results of operations are based on the Company’s best estimates of future economic and market conditions, including growth rates, estimated earnings and cash expenditures. The WACC is determined based on the Company’s capital structure, cost of capital, inherent business risk profile and long-term growth expectations, as reflected in the terminal value. The Company uses a market approach based on peer group market multiples to validate the reasonableness of the reporting unit fair values determined under the income approach.

The Company then validates the reasonableness of the total fair value of the reporting units under the income approach by reconciling the aggregate fair values of the reporting units to the Company’s total market capitalization, adjusted to include an estimated control premium. The estimated control premium is derived from observable transactions involving the purchase of controlling interests in comparable companies. The market capitalization of the Company is based on the average stock price over a range of dates preceding and including the assessment date, if available.

The second step of the quantitative impairment test is performed if the first step indicates that impairment exists. The second step of the impairment assessment involves allocating the reporting unit’s fair value to all of its recognized and unrecognized assets and liabilities in order to determine the implied fair value of the reporting unit’s goodwill and intangible assets as of the assessment date. The implied fair value of the reporting unit’s goodwill and other intangible assets is then compared to the carrying amount of goodwill and other intangible assets to quantify an impairment charge as of the assessment date.

Long-Lived Assets - The Company evaluates long-lived assets and intangible assets with definite lives for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When it is probable that undiscounted future cash flows will not be sufficient to recover an asset’s carrying amount, the asset is written down to its fair value. Assets to be disposed of by sale are reported at the lower of the carrying amount or fair value less cost to sell.

Joint Ventures - The Company applies the equity-method of accounting for investments for which it has the ability to exercise significant influence, but not control, over the investee. Significant influence is generally deemed to exist if the Company has an ownership interest in the voting stock of the investee of between 20% to 50%. The Company recognizes its proportionate share of the investee’s results within the operating results in the consolidated statements of operations, if applicable.

The Company consolidates investments for which it has the ability to control or for which it has an ownership interest in the voting stock of the investee in excess of 50%. The portion of the results not attributable to the Company’s controlling interest in the investee’s results is presented as “Income attributable to the noncontrolling interest” in the consolidated statements of operations.

Leases - The Company leases office facilities and equipment under operating leases. For significant lease agreements that provide for escalating rent payments or free-rent occupancy periods, the Company recognizes rent expense on a straight-line basis over the non-cancelable lease term. The lease term commences on the date when all conditions precedent to the Company’s obligation to pay rent are satisfied. Deferred rent is included in “Other accrued expenses and other current liabilities” and "Other non-current liabilities" in the consolidated balance sheets.

Share-Based Compensation - The Company accounts for share-based compensation based on the fair value of the award at the date of grant for equity-classified awards or as re-measured each reporting date for liability-classified awards until such awards no longer remain outstanding. The Company estimates the fair value of awards of equity share options or similar awards using option-pricing models, including the Black-Scholes and Monte Carlo simulation models, and generally recognizes this value as compensation expense ratably over the requisite service period, net of estimated forfeitures.

Recent Accounting Pronouncements

In July 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2013-11 Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss or a Tax Credit Carryforward Exists (ASU 2013-11). With certain exceptions, ASU 2013-11 requires entities to present an unrecognized tax benefit, or portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. The guidance is effective for interim and annual periods beginning after December 15, 2013 on either a prospective or retrospective basis with early adoption permitted. The Company does not expect adoption of this guidance to have a material impact on its consolidated financial position, results of operations or cash flows.

In March 2013, the FASB issued ASU No. 2013-05 Foreign Currency Matters (Topic 830): Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity. ASU 2013-05 clarifies when to release the cumulative translation adjustment into net income for transactions involving the disposition of some or all of an investment or a business combination achieved in stages (step acquisitions). The amendments are effective prospectively for interim and annual periods beginning on or after December 15, 2013. The Company does not expect adoption of this guidance to have a material impact on its consolidated financial position, results of operations or cash flows.

Properties_and_Equipment

Properties and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Properties and Equipment	'
	Property and Equipment

	Property and equipment, net was comprised of the following for the indicated periods:


		December 31,
		2013			2012

	Computer equipment	$	46,427		$	40,281

	Equipment and furniture	19,429			18,881

	Software	28,249			29,538

	Leasehold improvements	8,935			8,549

	Total property and equipment	103,040			97,249

	Accumulated depreciation	(82,512		)	(75,159		)
	Property and equipment, net	$	20,528		$	22,090


	During the years ended December 31, 2013 and 2012, the Company capitalized $0.7 million and $0.2 million, respectively, of internal-use software acquisition and development costs. During 2013 and 2012, the Company recorded adjustments to retire $1.4 million and $10.3 million, respectively, of property and equipment and removed the associated $1.0 million and $9.8 million, respectively, of accumulated depreciation, recognizing a loss of $0.4 million and $0.5 million, respectively.

Fair_Value_Disclosure

Fair Value Disclosure	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures	'
	Fair Value Disclosures

	The Company maintains a non-qualified Deferred Compensation Plan for highly compensated employees. The assets of the plan are held in the name of CDI at a third-party financial institution. Separate accounts are maintained for each participant to reflect the amounts deferred by the participant and all earnings and losses on those deferred amounts. The assets of the plan are held in publicly traded mutual funds. The fair value of the plan assets is calculated using the market price of the mutual funds as of the end of the period.

	The following tables summarize the assets and liabilities measured at fair value on a recurring basis by level of the fair value hierarchy for the indicated periods:


					Fair Value Measurements as of December 31, 2013 using
	Description		Fair Value		Quoted Prices in		Significant		Significant Unobservable
			Measurements		Active Markets for		Other Observable		Inputs
			as of		Identical Assets		Inputs		(Level 3)
			31-Dec-13		(Level 1)		(Level 2)

	Mutual Funds:
	Bond		$	1,495	$	1,495	$	—	$	—

	Large Cap		2,925		2,925		—		—

	International		1,227		1,227		—		—

	Mid Cap		750		750		—		—

	Small Cap		738		738		—		—

	Balanced		348		348		—		—

	Money Market Funds		1,512		1,512		—		—

	Total Assets (1)		$	8,995	$	8,995	$	—	$	—





	(1)	As of December 31, 2013, $0.3 million and $8.7 million are included in “Prepaid expenses and other current assets” (liability offset in “Other accrued expenses and other current liabilities”) and “Other non-current assets” (liability offset in “Deferred compensation”), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.



					Fair Value Measurements as of December 31, 2012 using
	Description		Fair Value		Quoted Prices in		Significant		Significant Unobservable
			Measurements		Active Markets for		Other Observable		Inputs
			as of		Identical Assets		Inputs		(Level 3)
			31-Dec-12		(Level 1)		(Level 2)

	Mutual Funds:
	Bond		$	1,972	$	1,972	$	—	$	—

	Large Cap		1,980		1,980		—		—

	International		917		917		—		—

	Mid Cap		383		383		—		—

	Small Cap		509		509		—		—

	Balanced		354		354		—		—

	Money Market Funds		1,508		1,508		—		—

	Total Assets (1)		$	7,623	$	7,623	$	—	$	—





(1)	As of December 31, 2012, $0.3 million and $7.3 million are included in “Prepaid expenses and other current assets” (liability offset in “Other accrued expenses and other current liabilities”) and “Other non-current assets” (liability offset in “Deferred compensation”), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets

	The following table summarizes the changes in the Company's carrying value of goodwill by reporting segment for the indicated periods:


			31-Dec-12														31-Dec-13
			Gross			Accumulated Impairment Losses				Additions			Translation and Other Adjustments				Gross			Accumulated Impairment Losses
			Balance														Balance

	GETS		$	35,713		$	(164	)		$	—		$	—			$	35,713		$	(164	)

	PSS		48,245			(31,448		)		—			221				47,075			(30,057		)

	MRI		16,578			(6,915		)		—			50				16,765			(7,052		)

	Total goodwill		$	100,536		$	(38,527	)		$	—		$	271			$	99,553		$	(37,273	)




			31-Dec-11														31-Dec-12
			Gross			Accumulated Impairment Losses				Additions			Translation and Other Adjustments				Gross			Accumulated Impairment Losses
			Balance														Balance

	GETS		$	35,713		$	(164	)		$	—		$	—			$	35,713		$	(164	)

	PSS		47,019			(30,616		)		—			394				48,245			(31,448		)

	MRI		16,245			(6,670		)		—			88				16,578			(6,915		)

	Total goodwill		$	98,977		$	(37,450	)		$	—		$	482			$	100,536		$	(38,527	)


	The Company performed its annual assessment for impairment of goodwill and other indefinite-lived intangible assets as of July 1, 2013 and determined there was no impairment. The Company's assessment determined that the fair values for each of the Company's reporting units, with the exception of PSS EMEA, comprised primarily of the CDI AndersElite Limited business, were substantially in excess of their related carrying values as of July 1, 2013. The PSS EMEA reporting unit had a fair value in excess of its carrying value of 15% and goodwill of $10.5 million. The Company believes it has made reasonable estimates and assumptions to calculate the fair value of its reporting units and indefinite-lived intangible assets. If actual future results are not consistent with management's estimates and assumptions, the Company may have to take an impairment charge in the future related to its goodwill or other indefinite-lived intangible assets. There were no triggering events subsequent to July 1, 2013 that required additional testing for any reporting units or indefinite-lived intangible assets.

	The following tables summarize the changes in the Company's carrying value of other intangible assets for the indicated periods:


			31-Dec-12														31-Dec-13
			Gross			Accumulated Amortization				Additions			Amortization				Gross			Accumulated Amortization
			Balance														Balance

	Intangible assets subject to amortization:
	Trademarks		$	5,200		$	(67	)		$	—		$	(373	)		$	5,200		$	(440	)

	Developed technology		460			(184		)		—			(92		)		460			(276		)

	Client relationships		11,960			(3,593		)		—			(1,032		)		11,960			(4,625		)

	Non-compete		150			(75		)		—			(30		)		150			(105		)

	Reacquired franchise rights		972			(206		)		—			(98		)		972			(304		)

	Total intangible assets subject to amortization		18,742			(4,125		)		—			(1,625		)		18,742			(5,750		)

	Indefinite-lived intangible assets:
	Trademarks		2,165			—				—			—				2,165			—

	Total other intangible assets		$	20,907		$	(4,125	)		$	—		$	(1,625	)		$	20,907		$	(5,750	)




		31-Dec-11														31-Dec-12
		Gross			Accumulated Amortization				Additions and Adjustments (1)			Amortization				Gross			Accumulated Amortization
		Balance														Balance

Intangible assets subject to amortization:
Trademarks		$	100		$	(33	)		$	5,100		$	(34	)		$	5,200		$	(67	)

Developed technology		460			(92		)		—			(92		)		460			(184		)

Client relationships		11,960			(2,537		)		—			(1,056		)		11,960			(3,593		)

Non-compete		150			(46		)		—			(29		)		150			(75		)

Reacquired franchise rights		907			(111		)		65			(95		)		972			(206		)

Total intangible assets subject to amortization		13,577			(2,819		)		5,165			(1,306		)		18,742			(4,125		)

Indefinite-lived intangible assets:
Trademarks		7,265			—				(5,100		)	—				2,165			—

Total other intangible assets		$	20,842		$	(2,819	)		$	65		$	(1,306	)		$	20,907		$	(4,125	)





-1	In December 2012, the Company reassessed the useful life of its $5.1 million L.R. Kimball trademark and determined the trademark to have a finite life. Accordingly, the Company accounted for this change on a prospective basis and it is being amortized on a straight-line basis over its estimated remaining useful life.

Amortization expense was $1.6 million for 2013, $1.3 million for 2012 and $1.4 million for 2011. Annual amortization expense is expected to range from approximately $1.1 million to $1.5 million per year for each of the next five years.

Restructuring_and_Other_Relate

Restructuring and Other Related Costs	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring and Other Related Costs	'
	Restructuring and Other Related Costs

	In December 2013, the Company announced that it will undertake a corporate realignment in the first quarter of 2014 (the “2013 Restructuring Plan”) to improve operational effectiveness and further optimize the Company's cost structure. The 2013 Restructuring Plan includes the elimination of approximately 70 positions and the consolidation of facilities and is expected to be completed during 2014. In the fourth quarter of 2013, the Company recorded a charge of $5.7 million to "Restructuring and other related costs" in the consolidated statement of operations, comprised of $4.6 million of employee severance and related costs, $0.6 million of real estate exit and related costs and $0.5 million of asset write-offs and related costs. Substantially all payments are expected to be made during 2014 with certain payments related to the consolidation of facilities expected through 2019. Additional charges of approximately $1 million to $3 million are expected to be recognized during 2014 related to the consolidation of facilities that include estimates for remaining lease obligations less sub-lease proceeds, facility relocation and related costs.

	In December 2011, the Company announced a strategic growth initiative. As part of this initiative, the Company approved a restructuring plan (the "2011 Restructuring Plan”) designed to reduce costs and improve efficiencies. Implementation of the 2011 Restructuring Plan was completed in 2012 with certain payments expected through 2014. In the fourth quarter of 2011, the Company recorded a $8.1 million charge to “Restructuring and other related costs” in the consolidated statement of operations, comprised of $5.7 million of employee severance and related costs, $0.8 million of real estate exit and related costs and $1.5 million of asset write-offs.

	The following table summarizes the provision, activity and balances related to the restructuring plans by cost type for the indicated periods:


		Employee severance and related costs			Real estate exit and related costs			Asset write-offs and related costs			Accrued restructuring liability

	Charges	$	5,739		$	831		$	1,530

	Cash payments	(367		)	—			—

	Non-cash	—			—			(1,530		)

	Balance at December 31, 2011	5,372			831			—			6,203

	Cash payments	(4,358		)	(701		)	—

	Non-cash	(587		)	377			—

	Balance at December 31, 2012	427			507			—			934

	Cash payments	(427		)	(353		)	—

	Charges	4,568			615			533

	Non-cash	—			—			(533		)

	Balance at December 31, 2013	$	4,568		$	769		$	—		$	5,337


	The consolidated balance sheet as of December 31, 2013 include $4.7 million in “Other accrued expenses and other current liabilities” and $0.6 million in "Other non-current liabilities", respectively. The consolidated balance sheet as of December 31, 2012 include $0.9 million in “Other accrued expenses and other current liabilities”.

ShortTerm_Borrowings

Short-Term Borrowings	12 Months Ended
Short-Term Borrowings	Dec. 31, 2013
Short-term Debt [Abstract]	'
Short-Term Borrowings	'
	Short-Term Borrowings

	On November 30, 2012, CDI Corp., its direct wholly-owned subsidiary, CDI Corporation, and its indirect subsidiary, CDI AndersElite Limited (each a “Borrower”), entered into a Credit Agreement (the “Credit Agreement”) with Bank of America, N.A. (the “Bank”). The Credit Agreement established a $75.0 million revolving line of credit facility (including a $5.0 million UK overdraft facility) that expires on November 29, 2017. The Company intends to repay outstanding borrowings under the Credit Agreement as of December 31, 2013 during 2014 and as a result has recorded these borrowings in "Short-term borrowings" in the consolidated balance sheets. Borrowings under this line of credit may be used by the Company and the other Borrowers for general business purposes or for letters of credit.

	The Borrowers' obligations under the Credit Agreement are guaranteed by three indirect subsidiaries of the Company: CDI-Infrastructure, LLC, CDI Marine Company, LLC and MRI Contract Staffing, Inc. The obligations of the three Borrowers and the three guarantors (the “Loan Parties”) are unsecured.

	Interest on borrowings under the facility are based on either an “Overnight Rate,” “Sterling Overnight Rate,” “LIBOR” or a “Base Rate” (each as set forth in the Credit Agreement), as chosen by the applicable Borrower each time it wishes to borrow funds. The “Applicable Rate” (as set forth in the Credit Agreement) equals either (i) the Overnight Rate, Sterling Overnight Rate or LIBOR plus a number of basis points (ranging from 1.25% to 2.00%) or (ii) the Base Rate plus a number of basis points (ranging from 0.25% to 1.00%), in each case depending on the Company's consolidated leverage ratio (which is the ratio of consolidated funded indebtedness to consolidated EBITDA, as defined in the Credit Agreement). There are customary fees associated with the facility including, but not limited to, an unused commitment fee at the rate of 0.15% to 0.225% on the daily amount of the Bank's unused commitment.

	The Credit Agreement contains customary affirmative covenants and certain restrictive covenants which limit the Company with respect to, among other things, creating liens on its assets, incurring indebtedness, making acquisitions and other investments, and disposing of assets other than in the ordinary course of business. The Credit Agreement also contains financial covenants which require the Company not to exceed a maximum consolidated leverage ratio (consolidated funded indebtedness to consolidated EBITDA) of 2.5 to 1.0 and to maintain a minimum fixed charge coverage ratio of 1.2 to 1.0. The preceding financial covenant terms are as defined in the Credit Agreement. The Company was in compliance with all covenants under the Credit Agreement as of December 31, 2013.

	As of December 31, 2013, the Company had outstanding borrowings of $2.8 million, letters of credit outstanding of $3.1 million and $69.1 million available to borrow under the Credit Agreement. Interest was payable at rates ranging from 1.42% to 1.78% per annum for outstanding borrowings as of December 31, 2013. As of December 31, 2013, the Company had an unsecured $0.4 million letter of credit outstanding under an agreement with TD Bank, N.A. that expires on July 1, 2014.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Share-Based Compensation

	On May 3, 2012, the Company's shareholders approved the CDI Corp. Amended and Restated 2004 Omnibus Stock Plan (the "Restated Omnibus Plan") for the benefit of employees, consultants and non-employee directors. The Restated Omnibus Plan amended and restated the CDI Corp. 2004 Omnibus Stock Plan and eliminated prospective participation in the CDI Corp. Stock Purchase Plan. The Restated Omnibus Plan provides for the grant of share-based awards including, but not limited to, stock options, stock appreciation rights, restricted stock, time-vested deferred stock and performance-based share awards. Vesting and other terms of share-based awards are set forth in individual agreements with the participant. The Company's share-based awards generally vest ratably over three to five years and generally expire in seven years from the date of grant.

	As of December 31, 2013, the Company was authorized to issue 2.1 million additional shares of the Company's common stock under the Restated Omnibus Plan. The Company may settle share-based awards by delivering shares of the Company's common stock that are authorized but unissued or that are held in treasury. When an award is granted, the number of shares of common stock subject to such award are reserved for issuance. Shares of Company stock tendered in payment of the exercise price or withholding taxes in respect of an award shall again be available for issuance under the Restated Omnibus Plan.

	Stock-based compensation expense is included in “Operating and administrative expenses” in the consolidated statements of operations and amounted to $2.8 million ($1.7 million, net of tax), $3.4 million ($2.1 million, net of tax) and $3.4 million ($2.1 million, net of tax) for the years ended December 31, 2013, 2012 and 2011, respectively.

	The table below summarizes the components of stock-based compensation expense for all of the Company’s stock-based plans by award type for the indicated periods:


			Year ended December 31,
			2013				2012				2011

	Time-vested deferred stock		$	1,829			$	1,920			$	1,625

	Stock appreciation rights		618				647				850

	Performance-based share awards		48				631				721

	Stock purchase plan		68				126				162

	Stock options		264				90				—

	Total stock-based compensation		$	2,827			$	3,414			$	3,358


	Time-Vested Deferred Stock (TVDS)
	TVDS awards entitle each recipient to receive a number of shares of the Company’s common stock upon vesting. The shares of TVDS generally vest ratably over five years except for those granted to the non-employee directors and certain current members of senior management, whose vesting periods vary from two to five years. TVDS will generally be forfeited prior to vesting if the holder’s employment with the Company ends, or for a certain award, if the Company’s stock price on the date of vesting is below the price on the date of grant. Upon vesting, a holder of TVDS receives the number of originally awarded shares plus additional shares of CDI common stock having a fair market value equal to the sum of the dividends that would have been paid on the original awarded shares during the vesting period had they been issued and outstanding throughout the vesting period. Compensation expense for TVDS is based on the fair value of the Company’s common stock on the date of grant and is charged to earnings on a straight-line basis over the vesting period.

	The following table summarizes the Company’s TVDS activity and related information for the indicated periods:


			Time Vested Deferred Stock			Weighted-Average				Weighted-Average Remaining Contractual Life (In Years)
						Grant Date
						Fair Value

	Outstanding non-vested as of December 31, 2010		218			$	16.57

	Granted		305			14.74

	Vested		(70	)		20.59

	Canceled		(37	)		15.16

	Outstanding non-vested as of December 31, 2011		416			14.68

	Granted		104			17.14

	Vested		(95	)		12.89

	Canceled		(25	)		13.43

	Outstanding non-vested as of December 31, 2012		400			15.82

	Granted		104			15.21

	Vested		(92	)		14.98

	Canceled		(33	)		15.17

	Outstanding non-vested as of December 31, 2013		379			14.69				2.5


The following table summarizes for TVDS the accumulated dividend equivalent number of shares of common stock that would be issued for outstanding TVDS using the closing market price as of the indicated dates:


		December 31,
		2013				2012				2011

Dividend participation		$	332			$	370			$	241

Closing market price per share		$	18.53			$	17.13			$	13.81

Equivalent shares at closing market price		18				22				17


As of December 31, 2013, total unrecognized compensation expense related to non-vested TVDS was $2.7 million, which is expected to be recognized over a weighted-average period of 2.5 years.

Stock Appreciation Rights (SARs)
SARs represent the right to receive, upon exercise, shares of the Company’s common stock having a value equal to the difference between the market price of the common stock and the exercise price, net of withholding taxes, as determined by the terms of the individual awards. SARs generally vest in three to five years and expire seven years from the date of grant. The expected life of SARs is based on the Company's historical experience. The expected stock price volatility is based on the historical volatility of the Company’s common stock.

No SARs were granted in 2013. The following table summarizes the range of assumptions used to estimate the fair values of SARs granted for the indicated periods:


		Year ended December 31,
		2012		2011

Risk-free interest rate		0.72%		0.87-2.37%
Expected life		4.3 years		4.5 years
Expected stock price volatility		56%		54-60%
Expected dividend yield		3.47%		2.71-4.97%

The following table summarizes the Company’s SARs activity and related information for the indicated periods:


		SARs			Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Life (in Years)		Aggregate Intrinsic Value

Outstanding as of December 31, 2010		695			$	19.47

Granted		429			13.15

Exercised		(22	)		10.06

Canceled		(136	)		15.7

Expired		(109	)		24.49

Outstanding as of December 31, 2011		857			16.51

Granted		18			14.99

Exercised		(79	)		10.88

Canceled		(69	)		13.38

Expired		(99	)		22.99

Outstanding as of December 31, 2012		628			16.53

Exercised		(53	)		11.54

Canceled		(16	)		12.1

Expired		(66	)		25.65

Outstanding as of December 31, 2013		493			15.98				3		$	1,999

Exercisable as of December 31, 2013		287			18.02				2.3		863

Exercisable and expected to vest as of December 31, 2013		434			16.52				2.9		1,613


The weighted average grant date fair value of SARS granted during the years ended December 31, 2012 and 2011 was $5.20 and $4.28, respectively. Aggregate intrinsic value represents the difference between the exercise prices of outstanding SARs and the closing price of the Company's common stock on December 31, 2013. The total intrinsic value of SARs exercised during the years ended December 31, 2013, 2012 and 2011 was $0.3 million, $0.5 million and $0.1 million, respectively. As of December 31, 2013, total unrecognized compensation expense related to non-vested SARs was $0.6 million, which is expected to be recognized over a weighted-average period of 2.3 years.

Performance-Based Share Awards
Performance-based share awards represent a number of shares of common stock to be awarded based on the achievement of certain performance criteria and generally vest over a two to five year period from the date of grant. The fair value of a performance-based share award is determined and the number of shares of common stock to be awarded is fixed on the date of grant. The Company periodically assesses the probability of achievement of the performance criteria and adjusts the amount of compensation expense recognized accordingly. Compensation expense is recognized over the vesting period and adjusted for the probability of achievement of the performance criteria.

The following table summarizes the Company’s performance-based share awards activity and related information for the indicated periods:


		Performance-based Share Awards			Weighted-Average				Weighted-Average Remaining Contractual Life (in Years)
					Grant Date
					Fair Value

Outstanding as of December 31, 2010		—			$	—

Granted		133			13.67

Canceled		(26	)		13.64

Outstanding as of December 31, 2011		107			13.67

Granted		82			17.36

Vested		(50	)		13.67

Canceled		(32	)		16.02

Outstanding as of December 31, 2012		107			15.78

Vested		(46	)		14

Canceled		(19	)		17.36

Outstanding as of December 31, 2013		42			17.36				3.2


As of December 31, 2013, total unrecognized compensation expense related to non-vested performance-based share awards was $0.8 million, which is expected to be recognized over a weighted-average period of 3.2 years.

Stock Purchase Plan (SPP)
On May 3, 2012, pursuant to the terms of the Restated Omnibus Plan, the SPP was terminated and any shares that were available for issuance under the SPP as of that date with respect to new awards were made available for issuance under the Restated Omnibus Plan.

Under the terms of the SPP, designated employees and non-employee directors had the opportunity to purchase shares of the Company’s common stock on a pre-tax basis and the Company matched participant contributions on a one for three basis. Vesting of SPP units occurs over a period of three to ten years as chosen by the participant. As of December 31, 2013, there were 32 thousand SPP units accumulated based upon participating employee and Company matching contributions and using a weighted-average market price of $15.19. In addition, SPP units that vest will receive additional shares of the Company’s common stock in lieu of dividends declared from the date of grant to the date of vesting.

Stock Options
Stock options are granted at a price equal to the quoted market price per share of the Company’s common stock on the date of grant. Employee stock options generally vest ratably over a five year period and expire seven years from the date of grant.

No stock options were granted in 2011. The following table summarizes the assumptions used to estimate the fair values of stock options granted for the indicated periods:


		Year ended December 31,
		2013		2012

Risk-free interest rate		1.55%		0.73%
Expected life		3.9 years		4.1 years
Expected stock price volatility		51%		56%
Expected dividend yield		3.10%		3.00%

The following table summarizes the Company’s stock option activity and related information for the indicated periods:


		Options			Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Life (in Years)		Aggregate Intrinsic Value

Outstanding as of December 31, 2010		155			$	23.57

Canceled		(50	)		16.05

Expired		(105	)		27.15

Outstanding as of December 31, 2011		—			—

Granted		154			17.36

Canceled		(10	)		17.36

Outstanding as of December 31, 2012		144			17.36

Granted		127			16.8

Canceled		(11	)		17.36

Outstanding as of December 31, 2013		260			17.09				6.4		$	375


The weighted average grant date fair value of stock options granted during the years ended December 31, 2013 and 2012 was $5.46 and $6.18, respectively. At December 31, 2013, there were 27 thousand exercisable options outstanding. As of December 31, 2013, total unrecognized compensation expense related to non-vested stock options was $1.2 million, which is expected to be recognized over a weighted-average period of 2.7 years.

Basic_and_Diluted_Earnings_Per

Basic and Diluted Earnings Per Share (EPS) Data	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Basic and Diluted Earnings Per Share (bEPSb) Data	'
	Basic and Diluted Earnings Per Share (EPS) Data

	The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the indicated periods:


		Year ended December 31,
		2013		2012		2011

	Numerator:
	Net income attributable to CDI	$	12,884	$	19,116	$	14,833

	Denominator:
	Basic weighted-average shares	19,442		19,344		19,144

	Dilutive effect of stock-based awards	297		401		212

	Diluted weighted-average shares	19,739		19,745		19,356

	Earnings per common share:
	Basic	$	0.66	$	0.99	$	0.77

	Diluted	$	0.65	$	0.97	$	0.77


	There were 459 thousand, 425 thousand and 729 thousand shares excluded from the computation of EPS for the years ended December 31, 2013, 2012 and 2011, respectively, because their inclusion would have been anti-dilutive.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes

	Income before income taxes was as follows for the indicated periods:


			Year ended December 31,
			2013				2012				2011

	United States		$	15,290			$	25,417			$	11,186

	Foreign		5,358				6,598				8,944

	Income before income taxes		$	20,648			$	32,015			$	20,130


	Income tax expense was comprised of the following for the indicated periods:


			Year ended December 31,
			2013				2012				2011

	Current:
	Federal		$	3,040			$	3,845			$	2,595

	State		870				360				1,604

	Foreign		1,884				2,176				442

	Total current		5,794				6,381				4,641


	Deferred:
	Federal		328				4,819				1,086

	State		1,669				1,198				(552		)

	Foreign		(91		)		184				(45		)

	Total deferred		1,906				6,201				489


	Income tax expense		$	7,700			$	12,582			$	5,130


	The following table reconciles income tax expense and rate based on the U.S. statutory rate to the Company’s income tax expense for the indicated periods:


			Year ended December 31,
			2013							2012							2011
			$				%			$				%			$				%

	Income tax expense based on the U.S. statutory rate		$	7,227			35	%		$	11,205			35	%		$	7,046			35	%

	Effect of charge related to the UK OFT matter		—				—			—				—			(3,381		)		(16.8	)

	State income taxes, net of federal tax benefit		1,147				5.6			1,013				3.2			684				3.4

	Permanent items		179				0.9			148				0.5			164				0.8

	Effect of foreign operations		1,008				4.9			2				—			289				1.4

	Net change in uncertain tax positions		(737		)		(3.6	)		(274		)		(0.9	)		(139		)		(0.7	)
	Change in valuation allowance - foreign loss deferred tax assets		(898		)		(4.3	)		477				1.5			634				3.2

Federal employer tax credits		(763		)		(3.7	)		—				—			(947		)		(4.7	)

Stock-based compensation		241				1.1			382				1.2			689				3.4

Other		296				1.4			(371		)		(1.2	)		91				0.5

Income tax expense		$	7,700			37.3			$	12,582			39.3			$	5,130			25.5


The tax effects of temporary differences that give rise to the Company’s deferred tax accounts were as follows for the indicated periods:


		December 31,
		2013				2012

Deferred tax assets:
Accrued compensation		$	8,597			$	9,264

Reserves and accruals		3,367				2,027

Loss and credit carryforwards		11,132				12,817

Total gross deferred tax assets		23,096				24,108

Less: valuation allowances		5,474				6,362

Net total deferred tax assets		17,622				17,746


Deferred tax liabilities:
Property and equipment depreciation		3,127				3,560

Intangible asset amortization		6,358				4,815

Other		1,147				335

Total deferred tax liabilities		10,632				8,710


Net deferred tax assets		$	6,990			$	9,036


As of December 31, 2013, the Company had state net operating loss carry forwards aggregating $93.0 million; these losses expire at various dates from 2014 through 2032.
As of December 31, 2013, the Company had foreign tax credits of $2.1 million, which expire at various dates from 2014 through 2022.
As of December 31, 2013, the Company had foreign net operating losses of $21.0 million, the majority of which can be carried forward indefinitely.
During 2013, 2012 and 2011, the Company (released)/added ($0.9 million), $0.6 million and $0.6 million, respectively, to the valuation allowance that was set up against the Company’s net foreign deferred tax assets of which $0.1 million, $0.5 million and $0.4 million, respectively, related to the valuation allowance set up against the Company’s net foreign deferred tax assets to fully reserve previously recorded tax benefits generated in the UK. The valuation allowance of $1.0 million related to foreign deferred tax assets generated in Australia was released in 2013 upon the disposal of the AndersElite Australia Pty Limited business. The remaining valuation allowance is primarily due to cumulative losses in the UK operations of the CDI AndersElite Limited business over the past seven years. A valuation allowance has been established for the state net operating loss carry forwards and foreign tax credit carry forwards to reduce the assets to a level which, more likely than not, will be realized. Realization is dependent upon generating sufficient state taxable income, foreign taxable income and foreign source income, respectively, in the appropriate jurisdictions prior to the expiration of the carry forwards. In addition, the Company has considered available tax planning strategies as part of the establishment of the valuation allowances. The deferred tax asset considered realizable could be reduced if estimates of these amounts during the carry forward period are reduced.
As of December 31, 2013, the Company had $0.1 million of total gross unrecognized tax benefits that, if recognized, would impact the effective tax rate. The Company expects the unrecognized tax benefits to change over the next 12 months if certain tax matters ultimately settle with the applicable taxing jurisdiction during this timeframe, or if the applicable statute of limitations lapses. A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows for the indicated periods:


		Year ended December 31,
		2013				2012				2011

Beginning balance of gross unrecognized tax benefits		$	588			$	1,070			$	1,351

Additions based on tax positions related to the current year		—				—				95

Reductions for the tax positions of prior years		(53		)		(164		)		(11		)
Reductions for settlements and payments		(323		)		(318		)		(118		)
Reductions due to statute expiration		(127		)		—				(247		)

Ending balance of gross unrecognized tax benefits		$	85			$	588			$	1,070


The Company accounts for interest and penalties related to income tax matters in income tax expense. Interest and penalties of $0.2 million were accrued as of December 31, 2013 and $0.6 million of interest and penalties were released during 2013. The Company files a consolidated U.S. federal income tax return and files state and foreign income tax returns in various jurisdictions as required. The U.S. federal tax return is open for examination back to 2011. State and foreign income tax returns remain open for examination back to 2009 in major jurisdictions in which the Company operates.
The Company has not recorded incremental deferred income taxes on the undistributed earnings of its foreign subsidiaries because it is management’s intention to reinvest such earnings for the foreseeable future. As of December 31, 2013, the undistributed earnings of the foreign subsidiaries amounted to approximately $40.0 million. Upon distribution of these earnings in the form of dividends or otherwise, the Company would be subject to U.S. income taxes and foreign withholding taxes, reduced by certain foreign tax credits.

Commitments_Contingencies_And_

Commitments, Contingencies And Legal Proceedings	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments, Contingencies And Legal Proceedings	'
	Commitments, Contingencies and Legal Proceedings
	Lease Commitments
	The Company leases office facilities and equipment under operating leases. The office facilities are generally used for sales, recruitment, engineering, design, drafting and administrative functions and are under leases with various expiration dates in the future. Rent expense for operating leases was $12.1 million, $12.3 million and $13.0 million in 2013, 2012 and 2011, respectively. Sublease proceeds were $0.4 million, $0.2 million and $0.7 million in 2013, 2012 and 2011, respectively. Future minimum annual rental payments under non-cancelable leases, excluding expected sublease proceeds of $0.2 million and $0.1 million for 2014 and 2015, are as follows for the indicated periods:


	Year	Amount

	2014	$	10,739

	2015	8,652

	2016	5,410

	2017	3,950

	2018	3,083

	Thereafter	485

	Total	$	32,319


	Self-Insurance
	The Company self-funds certain losses related to workers' compensation and employee health benefit claims. The Company maintains stop-loss insurance for workers’ compensation and health care benefit claims that generally limits the Company’s exposure to $250 thousand and $200 thousand per incident, respectively. The Company records expense for its estimated claims exposure based on incurred claims, historical experience and third-party insurance professionals or actuaries. The amounts accrued give consideration to the estimated undiscounted cash payments expected to be paid to satisfy existing claims and an allowance for incurred-but-not-reported claims. The accrual for workers’ compensation estimated claims exposure was $2.1 million and $2.0 million as of December 31, 2013 and 2012, respectively. The Company established its self-funded health benefits program during 2011 and had accrued $5.2 million and $4.0 million as of December 31, 2013 and 2012, respectively, for its estimated claims exposure.

	Contingent Earnout Liability
	On December 20, 2010, the Company acquired substantially all of the assets and certain liabilities of DSPCon, Inc. (DSPCon) for a purchase price of $6.9 million. Approximately $5.6 million of the purchase price was allocated to intangible assets, including $1.7 million for client relationships, $0.5 million for developed technology, $0.1 million for a trademark and $3.4 million for goodwill. The first of up to two contingent purchase consideration payments occurred during 2012 in the amount of $0.4 million. During 2013, the Company reversed $1.8 million of contingent purchase consideration liability through "Operating and administrative expense" in the consolidated statement of operations. As of December 31, 2013, the remaining contingent purchase consideration was $0.2 million and is expected to be paid in 2014.

	Legal Proceedings and Claims
	The Company is subject to various legal proceedings and claims that have arisen in the ordinary course of business. The Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Although management cannot predict the timing or outcome of these matters with certainty, management does not believe that the final resolution of these matters, individually or in the aggregate, would have a material adverse effect on the Company’s consolidated financial condition, results of operations or cash flows.

	In April 2011, the Company received a favorable ruling from the Competition Appeal Tribunal (CAT) on the Company’s appeal of a fine imposed by the United Kingdom’s Office of Fair Trading (OFT). The ruling by the CAT reduced the fine from $12.3 million to $2.5 million. The Company originally reserved $12.3 million for the fine in 2009 but as a result of the appeal, reversed $9.7 million of that reserve in the second quarter of 2011 through “Operating and administrative expenses” in the consolidated statement of operations.

Retirement_Plans

Retirement Plans	12 Months Ended
Retirement Plans	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Retirement Plans	'
	Retirement Plan

	The CDI Corporation 401(k) Saving Plan (the "Plan") is a defined contribution retirement plan maintained for the benefit of eligible employees and qualified under section 401(k) of the Internal Revenue Code. Eligible employees may make voluntary tax deferred contributions to the Plan and the Company, at its discretion, may make matching contributions subject to certain limitations. Participants are fully vested in their contributions and in the Company's matching contributions at all times except in certain limited instances. The Company recorded Plan expenses of $2.3 million, $2.1 million and $1.1 million for the years ended December 31, 2013, 2012 and 2011, respectively, in the consolidated statements of operations. Plan expenses are based on a formula using a percentage of compensation or an amount determined by the Board of Directors.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	Related Party Transactions

	A member of the Company’s Board of Directors is a senior partner of a law firm that provides legal services to the Company. Total disbursements to the law firm relating to these legal services aggregated $0.8 million, $0.3 million and $0.5 million in 2013, 2012 and 2011, respectively.

Joint_Ventures

Joint Ventures	12 Months Ended
Joint Ventures	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Joint Ventures	'
	Joint Ventures

	CDI-Pycopsa
	In 2008, the Company formed CDI—Pycopsa Ingeniería y Construcción, S. de R.L. de C.V. (CDI-Pycopsa), a joint venture with a Mexico-based construction and industrial maintenance company. In June 2009, CDI-Pycopsa began operations. The Company consolidates CDI-Pycopsa based on the Company’s controlling interest. As of December 31, 2013, the Company had a 67% ownership interest in CDI-Pycopsa and had invested an aggregate of approximately $0.6 million. CDI-Pycopsa had pre-tax income of $0.6 million, $1.2 million and $0.7 million for the years ended December 31, 2013, 2012 and 2011, respectively.

	CTQ Engineering LLC (CTQ)
	In December 2006, the Company formed CTQ Engineering LLC (CTQ) with two engineering firms. Since July 2008, the Company has maintained a 50% ownership interest in CTQ. The Company accounts for its ownership interest in CTQ under the equity method of accounting based on its significant but non-controlling interest. The Company maintains a de minimis investment balance in CTQ.

Reporting_Segments

Reporting Segments	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Reporting Segments	'
	Reporting Segments
	The Company has the following three reporting segments:

	•	Global Engineering and Technology Solutions (GETS) - GETS provides engineering and information technology solutions for its clients that involve the production of deliverable work products or services performed at a CDI facility or at a client's facility under the supervision of CDI personnel. These solutions typically include analysis of a client's engineering or information technology needs and the development of a solution that generally ranges in duration from several months to multiple years. Depending on the industry, engineering services can include such functions as feasibility studies, technology assessment, conceptual design, cost estimating, preliminary design, execution planning, procurement optimization, detailed design, testing and validation of regulatory compliance, technology integration and operating and maintenance support. Information technology services can include assessments, execution of business application services, web development, service-desk support, quality assurance and testing and program management. GETS provides these solutions through a delivery model consisting of: centers of excellence, with concentrated skill sets required for larger, more complex projects; regional centers to service local needs of clients; client-centered offices to deliver site-specific services; and near-shore centers to leverage low-cost design resources.

	•	Professional Services Staffing (PSS) - PSS provides skilled technical and professional personnel to its clients for discrete periods of time to augment the client's workforce in times of project, seasonal, peak period or business cycle needs. These engagements can range from several months to multiple years in duration. PSS also provides permanent placement services. PSS provides professional staffing services to targeted industries that include managed services and managed staffing programs, functional staffing outsourcing and business advisory services. PSS delivers these services through a delivery model that provides global staffing delivery focused on select engineering and technology skill sets and competencies. During 2013, 2012 and 2011, IBM accounted for approximately 19%, 20% and 21%, respectively, of the Company’s consolidated revenue. In December 2011, the Company and IBM executed a new Master Statement of Work effective as of December 31, 2011 with a term of three years. IBM may terminate the contract with or without cause at any time and has the option to extend the contract by an additional three years, in one-year increments.

	•	Management Recruiters International, Inc. (MRI) - MRI is a global franchisor that does business as MRINetwork® and provides the use of its trademarks, business systems and training and support services to its franchisees who engage in the search and recruitment of executive, technical, professional and managerial personnel for employment by their clients. The MRI franchisees provide permanent placement services primarily under the brand names Management Recruiters®, Sales Consultants® and OfficeMates 5®. MRI also provides training and support, implementation services and back-office services to enable franchisees to pursue contract staffing opportunities.

	For purposes of performance measurement, the Company charges certain expenses directly attributable to the reporting segments and allocates certain other expenses and support costs. Support costs consist principally of employee benefits administration, accounting support, IT services and shared service center costs. Operating and administrative expenses that are not directly attributable to the reporting segments are classified as corporate. Identifiable assets of the reporting segments exclude corporate assets. Corporate assets consist principally of all cash and cash equivalents, all current and deferred income tax assets, and certain corporate assets not directly associated with the reporting segments including certain property and equipment and certain prepaid expenses and other current assets and certain other non-current assets.
	Reporting segment data is presented in the following table for the indicated periods:


			Year ended December 31,
			2013				2012				2011

	Revenue:
	GETS		$	321,289			$	325,046			$	323,546

	PSS		708,598				710,268				667,662

	MRI		57,972				69,644				68,595

	Total revenue		$	1,087,859			$	1,104,958			$	1,059,803


	Gross profit:
	GETS		$	89,801			$	93,718			$	96,808

	PSS		89,546				94,185				95,569

	MRI		27,294				31,506				32,924

	Total gross profit		$	206,641			$	219,409			$	225,301


	Operating profit:
	GETS (1), (2), (3)		$	25,150			$	25,725			$	14,979

	PSS (1), (4)		12,621				20,528				22,187

	MRI (1)		8,549				10,201				9,468

	Corporate (1)		(25,404		)		(24,188		)		(26,259		)
	Total operating profit		20,916				32,266				20,375

	Other (expense) income, net		(268		)		(251		)		(245		)
	Income before income taxes		$	20,648			$	32,015			$	20,130






	(1)	In 2013 and 2011, the Company recorded pre-tax charges of $5.7 million and $8.1 million, respectively, to "Restructuring and other related costs" related to the 2013 and 2011 Restructuring Plans. The following table summarizes the amount of restructuring and other related costs recognized by reporting segment for the indicated periods:


			Year ended December 31,
			2013				2012				2011

	GETS		$	2,132			$	—			$	4,467

	PSS		2,394				—				2,622

MRI		215				—				372

Corporate		975				—				639

Restructuring and other related costs		$	5,716			$	—			$	8,100



(2)	In 2013, the Company's GETS segment recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.

(3)	In 2013, the Company's GETS segment recorded a $1.8 million benefit to "Operating and administrative expenses" related to the reduction of an acquisition-related earnout liability.

(4)	In 2011, the Company's PSS segment recorded a $9.7 million benefit to "Operating and administrative expenses" related to the successful legal appeal of the UK OFT matter.

Inter-segment activity is not significant; therefore, revenue reported for each operating segment is substantially from external clients.

Total depreciation and amortization by reporting segment is presented in the table below for the indicated periods:


		Year ended December 31,
		2013				2012				2011

Depreciation and amortization:
GETS		$	5,730			$	5,171			$	5,761

PSS		893				840				1,210

MRI		415				538				400

Corporate		3,308				3,716				3,637

Total depreciation and amortization		$	10,346			$	10,265			$	11,008


Reporting segment asset data is presented in the following table for the indicated periods:


		December 31,
		2013				2012

Assets:
GETS		$	130,269			$	142,428

PSS		168,786				150,795

MRI		28,098				29,044

Corporate		78,654				78,438

Total assets		$	405,807			$	400,705


Capital expenditure data by reporting segment is presented in the table below for the indicated periods:


		Year ended December 31,
		2013				2012				2011

Purchases of property and equipment:
GETS		$	4,832			$	4,082			$	2,734

PSS		670				837				757

MRI		29				116				649

Corporate		1,998				1,190				1,518

Total purchases of property and equipment		$	7,529			$	6,225			$	5,658


The Company is domiciled in the U.S. and its reporting segments (other than PSS) operate primarily in the U.S. and Canada. Revenue attributable to foreign countries is determined based on the client’s country of domicile. Revenue and fixed assets by geographic area are presented in the tables below for the indicated periods:


		Year ended December 31,
		2013				2012				2011

Revenue:
US		$	824,228			$	869,679			$	889,671

Canada		162,252				144,089				99,541

UK		79,743				59,967				55,900

Other		21,636				31,223				14,691

Total revenue		$	1,087,859			$	1,104,958			$	1,059,803




		December 31,
		2013				2012

Property and equipment, net:
US		$	18,535			$	19,902

Canada		221				301

UK		1,633				1,724

Other		139				163

Total property and equipment, net		$	20,528			$	22,090

Selected_Quarterly_Financial_I

Selected Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Selected Quarterly Financial Information (Unaudited)	'
	Selected Quarterly Financial Information (Unaudited)

	The following is a summary of quarterly financial information for the indicated periods:


			Year Ended December 31, 2013
			First		Second		Third		Fourth		Total
			Quarter		Quarter		Quarter		Quarter

	Revenue		$	269,466	$	263,363	$	277,916	$	277,114	$	1,087,859

	Gross profit		50,151		51,545		52,697		52,248		206,641

	Operating and administrative expenses (1), (2)		45,238		46,303		45,751		42,717		180,009

	Operating profit (1), (2), (3)		4,913		5,242		6,946		3,815		20,916

	Income before income taxes		4,862		5,180		6,889		3,717		20,648

	Net income		2,553		3,497		4,566		2,332		12,948

	Net income attributable to CDI		2,491		3,438		4,528		2,427		12,884

	Earnings per common share:
	Basic		$	0.13	$	0.18	$	0.23	$	0.13	$	0.66

	Diluted		$	0.13	$	0.17	$	0.23	$	0.12	$	0.65






	(1)	In the fourth quarter of 2013, the Company recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.

	(2)	In 2013, the Company's GETS segment recorded a $1.8 million benefit to "Operating and administrative expenses" related to the reduction of an acquisition-related earnout liability (by quarter: first $0.3 million, second $0.4 million, third $0.5 million and fourth $0.6 million.)

	(3)	In the fourth quarter of 2013, the Company recorded a $5.7 million charge to "Restructuring and other related costs" related to the 2013 Restructuring Plan.



			Year Ended December 31, 2012
			First		Second		Third		Fourth		Total
			Quarter		Quarter		Quarter		Quarter

	Revenue		$	280,627	$	274,398	$	279,390	$	270,543	$	1,104,958

	Gross profit		55,685		55,528		54,720		53,476		219,409

	Operating and administrative expenses		48,296		47,664		45,711		45,472		187,143

	Operating profit		7,389		7,864		9,009		8,004		32,266

	Income before income taxes		7,351		7,784		8,962		7,918		32,015

	Net income		3,914		5,071		5,406		5,042		19,433

	Net income attributable to CDI		3,823		4,952		5,349		4,992		19,116

	Earnings per common share:
	Basic		$	0.2	$	0.26	$	0.27	$	0.26	$	0.99

	Diluted		$	0.2	$	0.25	$	0.27	$	0.25	$	0.97

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2013
Accounting Policies [Abstract]	'
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	'
	Organization - CDI Corp. and its subsidiaries (the “Company” or “CDI”) is an integrated engineering and technology services organization providing client-focused solutions in select global industries. The Company provides engineering and information technology (IT) solutions and staffing services to clients in the Oil, Gas and Chemical (OGC), Aerospace and Industrial Equipment (AIE), and Hi-Tech industry verticals as well as in "Other" industry verticals that primarily include the infrastructure, U.S. defense, transportation and financial services industries. The Company derives most of its revenue by providing these services to large and mid-sized companies located primarily in the United States (U.S.), Canada and the United Kingdom (UK).
Basis of Presentation	'
Basis of Presentation	Basis of Presentation - The consolidated financial statements of the Company and the accompanying notes are prepared in accordance with U.S. generally accepted accounting principles (GAAP).
Principles of Consolidation	'
	Principles of Consolidation - The consolidated financial statements include the accounts of CDI Corp. and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.
	The Company consolidates investments for which it has the ability to control or for which it has an ownership interest in the voting stock of the investee in excess of 50%. The portion of the results not attributable to the Company’s controlling interest in the investee’s results is presented as “Income attributable to the noncontrolling interest” in the consolidated statements of operations.
Use of Estimates	'
	Use of Estimates - The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts disclosed in the financial statements and accompanying notes. Estimates, by their nature, are based on judgment and available information. Actual results could differ materially from those estimates.

	Significant estimates inherent in the preparation of the accompanying consolidated financial statements include the assumptions used in the determination of the allowance for doubtful accounts receivable, impairment assessment of goodwill, determination of the recoverability of long-lived assets, assessment of legal contingencies and calculation of income taxes.
Reclassifications	'
Reclassifications	For comparative purposes, certain amounts have been reclassified to conform to the current period presentation.
Revenue Recognition	'
	Revenue Recognition - Revenue is presented net of any revenue-based taxes, such as sales, use, excise and value added taxes. The Company derives its revenue from several sources. Each of the Company’s three segments provide staffing services. The Company’s Global Engineering Technology Solutions (GETS) segment also provides project and outsourcing services, which include cost-plus and fixed-price contracts, and permanent placement services. The Company’s Management Recruiters International (MRI) segment also generates franchising revenue through royalties and, to a lesser extent, initial franchise fees.

	Staffing Services - The Company recognizes revenue from staffing services based on the gross amount billed. The Company typically bills its clients once services are performed and associated costs have been incurred. In these circumstances, the Company assumes the risk of acceptability of its employees to its clients. The Company will also at times use unaffiliated companies (supplier associates) and their employees to fulfill a client’s staffing requirements either in whole or in part. Under these arrangements, these firms serve as subcontractors. Clients typically require a single consolidated bill that reflects services performed by both the Company’s employees and the employees of any applicable supplier associates. When utilizing supplier associates, the Company records the difference between its gross billings and the amount paid to the supplier associate as revenue, which is generally referred to as an administrative fee. Administrative and clerical costs related to time accumulation, invoicing and other activities are recorded and included in operating and administrative expenses as incurred.
	Project and Outsourcing Services - The Company recognizes revenue from project and outsourcing services as the services are performed. Revenue for these services is generally based on mark-ups of the Company's employees' hourly rates of pay or on a cost plus fixed fee basis. Information technology (IT) outsourcing service contracts generally include the performance of certain computer or network operations or service-desk support on behalf of clients. These IT outsourcing service contracts typically contain an invoicing schedule covering the contractual period. Accordingly, the Company recognizes revenue on a pro-rata basis using elapsed time as the measure of performance under these IT outsourcing service contracts. The Company derives less than 5% of its revenue from fixed-price contracts. Fixed-price engineering contracts typically include development of conceptual and detailed designs in support of a client's construction of tangible property. The Company recognizes revenue for fixed-price contracts under the percentage-of-completion method based generally on the proportion of total direct labor costs incurred to total estimated direct labor costs. When total estimated costs indicate a loss, the Company will recognize the full amount of that loss immediately.
	Permanent Placement Services - These services include the search for and recruitment of candidates for employment with the Company’s clients. Generally, the Company performs permanent placement services on a non-exclusive, contingency basis. Revenue is recognized only after successfully placing a recommended candidate.
	Franchise Royalties - MRI’s rights to franchise royalties are governed by the provisions of its franchise contracts. Under the franchise contracts, the franchisees remit to the Company a contractual percentage of fees collected from their clients. The Company records franchise royalty revenue as fees are collected by the franchisee and they become a receivable from the franchisee.
	Franchise Fees - The Company recognizes fees related to sales of new MRI franchises and master franchise agreements when the Company has substantially fulfilled its requirements under the respective franchise agreement.
Off-Balance Sheet Risk	'
Off-Balance Sheet Risk	Off-Balance Sheet Risk - The Company is exposed to risks associated with fluctuations in foreign currency exchange rates because the transactions of its foreign operations are primarily denominated in British pounds sterling and Canadian dollars. Exchange rate fluctuations impact the U.S. dollar value of reported earnings derived from these foreign operations as well as the Company’s investment in the net assets related to these foreign operations.
Foreign Currency Translation	'
Foreign Currency Translation	Foreign Currency - Foreign subsidiaries of the Company use local currency as the functional currency. Net assets are translated at year-end exchange rates while revenue and expenses are translated at average monthly exchange rates. Adjustments resulting from these translations are reflected in “Accumulated other comprehensive (loss) income” in the equity section of the consolidated balance sheets. Gains and losses arising from foreign currency transactions are reflected in “Other income (expense), net” in the consolidated statements of operations.
Concentrations of Credit Risk	'
Concentrations of Credit Risk	Concentrations of Credit Risk - The Company’s principal asset is its accounts receivable. Substantially all of the Company’s clients are provided trade credit. The Company’s clients are primarily large and mid-sized organizations. The Company performs ongoing credit evaluations of its clients and maintains allowances for potential credit losses. The Company considers a number of factors in determining the allowance for doubtful accounts receivable, including an assessment of client-specific information, the Company’s historical experience, the age of the receivable and current market and economic conditions.
Income Taxes	'
Income Taxes	Income Taxes - The Company accounts for income taxes using the asset and liability method. Under this method, income taxes are provided for amounts currently payable and for amounts deferred as tax assets and liabilities based on differences between the financial statement carrying amounts and tax basis of its assets and liabilities. In establishing its deferred income tax assets and liabilities, the Company makes judgments and interpretations based on the enacted tax laws and published tax guidance. The Company records deferred tax assets and liabilities and evaluates the need for valuation allowances to reduce the deferred tax assets to realizable amounts. The likelihood of a material change in the Company’s expected realization of these assets is dependent on future taxable income, its ability to use tax credit carry forwards and carry backs, final tax settlements and the effectiveness of its tax planning strategies in the various tax jurisdictions in which it operates. The Company recognizes the effect of income tax positions only if those positions are more likely than not to be sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely to be realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. See Note 9—Income Taxes.
Cash and Cash Equivalents	'
Cash and Cash Equivalents	Cash and Cash Equivalents - Cash equivalents include highly liquid investments that mature within 90 days from the date of investment.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments - The net carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and short-term debt approximate their fair value due to the short-term nature of these instruments as well as the variable interest rate for short-term borrowings.
	For financial assets and liabilities measured at fair value on a recurring basis, fair value is the price the Company would receive to sell an asset or pay to transfer a liability in an orderly transaction with a market participant at the measurement date. A three-level fair value hierarchy prioritizes the inputs used to measure fair value as follows: Level 1—quoted prices in active markets for identical instruments; Level 2—quoted prices in active markets for similar instruments, quoted prices for identical instruments in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the instrument; and Level 3—significant inputs to the valuation model are unobservable.
Property and Equipment	'
	Property and Equipment - Property and equipment are recorded at cost. Depreciation expense for financial reporting purposes is computed using the straight-line method over the following useful lives:
	Computer equipment 4 years
	Equipment and furniture 4-10 years
	Software 4-7 years
	Leasehold improvements Shorter of lease term or useful life

	The Company capitalizes direct costs incurred in the development of internal-use software in the application development stage of software development.
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets - Goodwill represents the excess of the purchase price over the estimated fair market value of identifiable net assets at the date of acquisition in a business combination. Other intangible assets are identifiable assets that lack physical substance, which are acquired as part of a business combination or other transaction. Intangible assets with definite lives are amortized on a straight-line basis over their useful lives. Goodwill and other intangible assets with indefinite lives are not amortized and are tested for impairment at least annually. The Company performs its annual assessment for impairment of goodwill and other indefinite-lived intangible assets as of July 1 of each fiscal year, or whenever events occur or circumstances indicate that it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is below its carrying value.

	The Company has the option to perform a qualitative assessment for impairment of its goodwill and indefinite-lived intangible assets to determine if it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is below its carrying value. If the Company determines based on a qualitative assessment that it is more likely than not that the fair value of a reporting unit or indefinite-lived intangible asset is greater than its carrying value, then it would not be required to perform the two-step quantitative impairment test described below. If necessary, the Company will perform a quantitative assessment for impairment of its goodwill and indefinite-lived intangible assets using the two-step approach.

	The first step of the quantitative impairment test requires that the Company determine the fair value of each reporting unit and then compare that fair value to the reporting unit’s carrying amount. The Company uses the income approach to determine the fair value of its reporting units. The Company applies a valuation technique consistent with the income approach to measure the fair value of its indefinite-lived intangible assets. The income approach is based on the present value of estimated discounted cash flows and terminal value projected for each reporting unit. The income approach requires significant judgments, including the projected results of operations, the weighted-average cost of capital (WACC) used to discount the cash flows and terminal value assumptions. The projected results of operations are based on the Company’s best estimates of future economic and market conditions, including growth rates, estimated earnings and cash expenditures. The WACC is determined based on the Company’s capital structure, cost of capital, inherent business risk profile and long-term growth expectations, as reflected in the terminal value. The Company uses a market approach based on peer group market multiples to validate the reasonableness of the reporting unit fair values determined under the income approach.
	The Company then validates the reasonableness of the total fair value of the reporting units under the income approach by reconciling the aggregate fair values of the reporting units to the Company’s total market capitalization, adjusted to include an estimated control premium. The estimated control premium is derived from observable transactions involving the purchase of controlling interests in comparable companies. The market capitalization of the Company is based on the average stock price over a range of dates preceding and including the assessment date, if available.
	The second step of the quantitative impairment test is performed if the first step indicates that impairment exists. The second step of the impairment assessment involves allocating the reporting unit’s fair value to all of its recognized and unrecognized assets and liabilities in order to determine the implied fair value of the reporting unit’s goodwill and intangible assets as of the assessment date. The implied fair value of the reporting unit’s goodwill and other intangible assets is then compared to the carrying amount of goodwill and other intangible assets to quantify an impairment charge as of the assessment date.
Long-Lived Assets	'
Long-Lived Assets	Long-Lived Assets - The Company evaluates long-lived assets and intangible assets with definite lives for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When it is probable that undiscounted future cash flows will not be sufficient to recover an asset’s carrying amount, the asset is written down to its fair value. Assets to be disposed of by sale are reported at the lower of the carrying amount or fair value less cost to sell.
Joint Ventures	'
Joint Ventures	Joint Ventures - The Company applies the equity-method of accounting for investments for which it has the ability to exercise significant influence, but not control, over the investee. Significant influence is generally deemed to exist if the Company has an ownership interest in the voting stock of the investee of between 20% to 50%. The Company recognizes its proportionate share of the investee’s results within the operating results in the consolidated statements of operations, if applicable.
Leases	'
Leases	Leases - The Company leases office facilities and equipment under operating leases. For significant lease agreements that provide for escalating rent payments or free-rent occupancy periods, the Company recognizes rent expense on a straight-line basis over the non-cancelable lease term. The lease term commences on the date when all conditions precedent to the Company’s obligation to pay rent are satisfied. Deferred rent is included in “Other accrued expenses and other current liabilities” and "Other non-current liabilities" in the consolidated balance sheets.
Stock-Based Compensation	'
Stock-Based Compensation	Share-Based Compensation - The Company accounts for share-based compensation based on the fair value of the award at the date of grant for equity-classified awards or as re-measured each reporting date for liability-classified awards until such awards no longer remain outstanding. The Company estimates the fair value of awards of equity share options or similar awards using option-pricing models, including the Black-Scholes and Monte Carlo simulation models, and generally recognizes this value as compensation expense ratably over the requisite service period, net of estimated forfeitures.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Changes in the allowance for doubtful accounts receivable	'
	The following table summarizes the changes in the allowance for doubtful accounts receivable for the indicated periods:


		Balance at beginning of year		Additions charged to earnings		Uncollectible receivables written off, net of recoveries			Balance at
									end of year

	31-Dec-13	$	2,563	$	1,442	$	(1,112	)	$	2,893

	31-Dec-12	3,698		637		(1,772		)	2,563

	31-Dec-11	5,339		428		(2,069		)	3,698

Properties_and_Equipment_Table

Properties and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property and equipment, net	'
	Property and equipment, net was comprised of the following for the indicated periods:


		December 31,
		2013			2012

	Computer equipment	$	46,427		$	40,281

	Equipment and furniture	19,429			18,881

	Software	28,249			29,538

	Leasehold improvements	8,935			8,549

	Total property and equipment	103,040			97,249

	Accumulated depreciation	(82,512		)	(75,159		)
	Property and equipment, net	$	20,528		$	22,090

Fair_Value_Disclosure_Tables

Fair Value Disclosure (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Schedule of assets and laibilities measured on a recurring basis	'
	The Company maintains a non-qualified Deferred Compensation Plan for highly compensated employees. The assets of the plan are held in the name of CDI at a third-party financial institution. Separate accounts are maintained for each participant to reflect the amounts deferred by the participant and all earnings and losses on those deferred amounts. The assets of the plan are held in publicly traded mutual funds. The fair value of the plan assets is calculated using the market price of the mutual funds as of the end of the period.

	The following tables summarize the assets and liabilities measured at fair value on a recurring basis by level of the fair value hierarchy for the indicated periods:


					Fair Value Measurements as of December 31, 2013 using
	Description		Fair Value		Quoted Prices in		Significant		Significant Unobservable
			Measurements		Active Markets for		Other Observable		Inputs
			as of		Identical Assets		Inputs		(Level 3)
			31-Dec-13		(Level 1)		(Level 2)

	Mutual Funds:
	Bond		$	1,495	$	1,495	$	—	$	—

	Large Cap		2,925		2,925		—		—

	International		1,227		1,227		—		—

	Mid Cap		750		750		—		—

	Small Cap		738		738		—		—

	Balanced		348		348		—		—

	Money Market Funds		1,512		1,512		—		—

	Total Assets (1)		$	8,995	$	8,995	$	—	$	—





	(1)	As of December 31, 2013, $0.3 million and $8.7 million are included in “Prepaid expenses and other current assets” (liability offset in “Other accrued expenses and other current liabilities”) and “Other non-current assets” (liability offset in “Deferred compensation”), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.



					Fair Value Measurements as of December 31, 2012 using
	Description		Fair Value		Quoted Prices in		Significant		Significant Unobservable
			Measurements		Active Markets for		Other Observable		Inputs
			as of		Identical Assets		Inputs		(Level 3)
			31-Dec-12		(Level 1)		(Level 2)

	Mutual Funds:
	Bond		$	1,972	$	1,972	$	—	$	—

	Large Cap		1,980		1,980		—		—

	International		917		917		—		—

	Mid Cap		383		383		—		—

	Small Cap		509		509		—		—

	Balanced		354		354		—		—

	Money Market Funds		1,508		1,508		—		—

	Total Assets (1)		$	7,623	$	7,623	$	—	$	—





(1)	As of December 31, 2012, $0.3 million and $7.3 million are included in “Prepaid expenses and other current assets” (liability offset in “Other accrued expenses and other current liabilities”) and “Other non-current assets” (liability offset in “Deferred compensation”), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Changes in the Company's carrying value of goodwill by reporting segment	'
	The following table summarizes the changes in the Company's carrying value of goodwill by reporting segment for the indicated periods:


		31-Dec-12											31-Dec-13
		Gross		Accumulated Impairment Losses			Additions			Translation and Other Adjustments			Gross		Accumulated Impairment Losses
		Balance											Balance

	GETS	$	35,713	$	(164	)	$	—		$	—		$	35,713	$	(164	)

	PSS	48,245		(31,448		)	—			221			47,075		(30,057		)

	MRI	16,578		(6,915		)	—			50			16,765		(7,052		)

	Total goodwill	$	100,536	$	(38,527	)	$	—		$	271		$	99,553	$	(37,273	)




		31-Dec-11											31-Dec-12
		Gross		Accumulated Impairment Losses			Additions			Translation and Other Adjustments			Gross		Accumulated Impairment Losses
		Balance											Balance

	GETS	$	35,713	$	(164	)	$	—		$	—		$	35,713	$	(164	)

	PSS	47,019		(30,616		)	—			394			48,245		(31,448		)

	MRI	16,245		(6,670		)	—			88			16,578		(6,915		)

	Total goodwill	$	98,977	$	(37,450	)	$	—		$	482		$	100,536	$	(38,527	)

Changes in the Company's carrying value of other intangible assets	'
	The following tables summarize the changes in the Company's carrying value of other intangible assets for the indicated periods:


		31-Dec-12											31-Dec-13
		Gross		Accumulated Amortization			Additions			Amortization			Gross		Accumulated Amortization
		Balance											Balance

	Intangible assets subject to amortization:
	Trademarks	$	5,200	$	(67	)	$	—		$	(373	)	$	5,200	$	(440	)

	Developed technology	460		(184		)	—			(92		)	460		(276		)

	Client relationships	11,960		(3,593		)	—			(1,032		)	11,960		(4,625		)

	Non-compete	150		(75		)	—			(30		)	150		(105		)

	Reacquired franchise rights	972		(206		)	—			(98		)	972		(304		)

	Total intangible assets subject to amortization	18,742		(4,125		)	—			(1,625		)	18,742		(5,750		)

	Indefinite-lived intangible assets:
	Trademarks	2,165		—			—			—			2,165		—

	Total other intangible assets	$	20,907	$	(4,125	)	$	—		$	(1,625	)	$	20,907	$	(5,750	)




		31-Dec-11											31-Dec-12
		Gross		Accumulated Amortization			Additions and Adjustments (1)			Amortization			Gross		Accumulated Amortization
		Balance											Balance

	Intangible assets subject to amortization:
	Trademarks	$	100	$	(33	)	$	5,100		$	(34	)	$	5,200	$	(67	)

	Developed technology	460		(92		)	—			(92		)	460		(184		)

	Client relationships	11,960		(2,537		)	—			(1,056		)	11,960		(3,593		)

	Non-compete	150		(46		)	—			(29		)	150		(75		)

	Reacquired franchise rights	907		(111		)	65			(95		)	972		(206		)

	Total intangible assets subject to amortization	13,577		(2,819		)	5,165			(1,306		)	18,742		(4,125		)

	Indefinite-lived intangible assets:
	Trademarks	7,265		—			(5,100		)	—			2,165		—

	Total other intangible assets	$	20,842	$	(2,819	)	$	65		$	(1,306	)	$	20,907	$	(4,125	)

Restructuring_and_Other_Relate1

Restructuring and Other Related Costs RestructuringOtherRelatedCosts (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring plan provision summary	'
	The following table summarizes the provision, activity and balances related to the restructuring plans by cost type for the indicated periods:


		Employee severance and related costs			Real estate exit and related costs			Asset write-offs and related costs			Accrued restructuring liability

	Charges	$	5,739		$	831		$	1,530

	Cash payments	(367		)	—			—

	Non-cash	—			—			(1,530		)

	Balance at December 31, 2011	5,372			831			—			6,203

	Cash payments	(4,358		)	(701		)	—

	Non-cash	(587		)	377			—

	Balance at December 31, 2012	427			507			—			934

	Cash payments	(427		)	(353		)	—

	Charges	4,568			615			533

	Non-cash	—			—			(533		)

	Balance at December 31, 2013	$	4,568		$	769		$	—		$	5,337


	The consolidated balance sheet as of December 31, 2013 include $4.7 million in “Other accrued expenses and other current liabilities” and $0.6 million in "Other non-current liabilities", respectively. The consolidated balance sheet as of December 31, 2012 include $0.9 million in “Other accrued expenses and other current liabilities”.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
The components of stock-based compensation expense for all of the Companybs stock-based plans	'
	The table below summarizes the components of stock-based compensation expense for all of the Company’s stock-based plans by award type for the indicated periods:


		Year ended December 31,
		2013				2012			2011

	Time-vested deferred stock	$	1,829			$	1,920		$	1,625

	Stock appreciation rights	618				647			850

	Performance-based share awards	48				631			721

	Stock purchase plan	68				126			162

	Stock options	264				90			—

	Total stock-based compensation	$	2,827			$	3,414		$	3,358

Summary of the Company's equity activity	'
	The following table summarizes the Company’s TVDS activity and related information for the indicated periods:


		Time Vested Deferred Stock			Weighted-Average			Weighted-Average Remaining Contractual Life (In Years)
					Grant Date
					Fair Value

	Outstanding non-vested as of December 31, 2010	218			$	16.57

	Granted	305			14.74

	Vested	(70	)		20.59

	Canceled	(37	)		15.16

	Outstanding non-vested as of December 31, 2011	416			14.68

	Granted	104			17.14

	Vested	(95	)		12.89

	Canceled	(25	)		13.43

	Outstanding non-vested as of December 31, 2012	400			15.82

	Granted	104			15.21

	Vested	(92	)		14.98

	Canceled	(33	)		15.17

	Outstanding non-vested as of December 31, 2013	379			14.69			2.5

Schedule of share equivalents	'


		December 31,
		2013				2012			2011

	Dividend participation	$	332			$	370		$	241

	Closing market price per share	$	18.53			$	17.13		$	13.81

	Equivalent shares at closing market price	18				22			17

Summary of the range of assumptions used to estimate the fair values of SARs granted	'
	The following table summarizes the range of assumptions used to estimate the fair values of SARs granted for the indicated periods:


		Year ended December 31,
		2012		2011

	Risk-free interest rate	0.72%		0.87-2.37%
	Expected life	4.3 years		4.5 years
	Expected stock price volatility	56%		54-60%
	Expected dividend yield	3.47%		2.71-4.97%
Summary of the Companybs SARs activity and related information	'
	The following table summarizes the Company’s SARs activity and related information for the indicated periods:


		SARs			Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Life (in Years)		Aggregate Intrinsic Value

	Outstanding as of December 31, 2010	695			$	19.47

	Granted	429			13.15

	Exercised	(22	)		10.06

	Canceled	(136	)		15.7

	Expired	(109	)		24.49

	Outstanding as of December 31, 2011	857			16.51

	Granted	18			14.99

	Exercised	(79	)		10.88

	Canceled	(69	)		13.38

	Expired	(99	)		22.99

	Outstanding as of December 31, 2012	628			16.53

	Exercised	(53	)		11.54

	Canceled	(16	)		12.1

	Expired	(66	)		25.65

	Outstanding as of December 31, 2013	493			15.98			3		$	1,999

	Exercisable as of December 31, 2013	287			18.02			2.3		863

	Exercisable and expected to vest as of December 31, 2013	434			16.52			2.9		1,613

Companybs PCDS activity and related information	'
	The following table summarizes the Company’s performance-based share awards activity and related information for the indicated periods:


		Performance-based Share Awards			Weighted-Average			Weighted-Average Remaining Contractual Life (in Years)
					Grant Date
					Fair Value

	Outstanding as of December 31, 2010	—			$	—

	Granted	133			13.67

	Canceled	(26	)		13.64

	Outstanding as of December 31, 2011	107			13.67

	Granted	82			17.36

	Vested	(50	)		13.67

	Canceled	(32	)		16.02

	Outstanding as of December 31, 2012	107			15.78

	Vested	(46	)		14

	Canceled	(19	)		17.36

	Outstanding as of December 31, 2013	42			17.36			3.2

Summary of the Companybs stock option activity and related information	'
	The following table summarizes the Company’s stock option activity and related information for the indicated periods:


		Options			Weighted-Average Exercise Price			Weighted-Average Remaining Contractual Life (in Years)		Aggregate Intrinsic Value

	Outstanding as of December 31, 2010	155			$	23.57

	Canceled	(50	)		16.05

	Expired	(105	)		27.15

	Outstanding as of December 31, 2011	—			—

	Granted	154			17.36

	Canceled	(10	)		17.36

	Outstanding as of December 31, 2012	144			17.36

	Granted	127			16.8

	Canceled	(11	)		17.36

	Outstanding as of December 31, 2013	260			17.09			6.4		$	375

Basic_and_Diluted_Earnings_Per1

Basic and Diluted Earnings Per Share (EPS) Data Basic and Diluted Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share, Basic and Diluted [Abstract]	'
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]	'
	The following table reconciles the denominator used to compute basic EPS to the denominator used to compute diluted EPS for the indicated periods:


		Year ended December 31,
		2013		2012		2011

	Numerator:
	Net income attributable to CDI	$	12,884	$	19,116	$	14,833

	Denominator:
	Basic weighted-average shares	19,442		19,344		19,144

	Dilutive effect of stock-based awards	297		401		212

	Diluted weighted-average shares	19,739		19,745		19,356

	Earnings per common share:
	Basic	$	0.66	$	0.99	$	0.77

	Diluted	$	0.65	$	0.97	$	0.77

Income_Taxes_Income_Taxes_Tabl

Income Taxes Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of income (loss) before income taxes	'
	Income before income taxes was as follows for the indicated periods:


		Year ended December 31,
		2013			2012				2011

	United States	$	15,290		$	25,417			$	11,186

	Foreign	5,358			6,598				8,944

	Income before income taxes	$	20,648		$	32,015			$	20,130

Schedule of income tax expense	'
	Income tax expense was comprised of the following for the indicated periods:


		Year ended December 31,
		2013			2012				2011

	Current:
	Federal	$	3,040		$	3,845			$	2,595

	State	870			360				1,604

	Foreign	1,884			2,176				442

	Total current	5,794			6,381				4,641


	Deferred:
	Federal	328			4,819				1,086

	State	1,669			1,198				(552		)

	Foreign	(91		)	184				(45		)

	Total deferred	1,906			6,201				489


	Income tax expense	$	7,700		$	12,582			$	5,130

Reconciliation of income tax expense and rate based on the U.S. statutory rate to the Companybs income tax expense	'
	The following table reconciles income tax expense and rate based on the U.S. statutory rate to the Company’s income tax expense for the indicated periods:


		Year ended December 31,
		2013						2012						2011
		$			%			$				%		$			%

	Income tax expense based on the U.S. statutory rate	$	7,227		35	%		$	11,205			35	%	$	7,046		35	%

	Effect of charge related to the UK OFT matter	—			—			—				—		(3,381		)	(16.8	)

	State income taxes, net of federal tax benefit	1,147			5.6			1,013				3.2		684			3.4

	Permanent items	179			0.9			148				0.5		164			0.8

	Effect of foreign operations	1,008			4.9			2				—		289			1.4

	Net change in uncertain tax positions	(737		)	(3.6	)		(274		)		(0.9	)	(139		)	(0.7	)
	Change in valuation allowance - foreign loss deferred tax assets	(898		)	(4.3	)		477				1.5		634			3.2

	Federal employer tax credits	(763		)	(3.7	)		—				—		(947		)	(4.7	)

	Stock-based compensation	241			1.1			382				1.2		689			3.4

	Other	296			1.4			(371		)		(1.2	)	91			0.5

	Income tax expense	$	7,700		37.3			$	12,582			39.3		$	5,130		25.5

Schedule of the tax effects of temporary differences that give rise to the Companybs deferred tax accounts	'
	The tax effects of temporary differences that give rise to the Company’s deferred tax accounts were as follows for the indicated periods:


		December 31,
		2013			2012

	Deferred tax assets:
	Accrued compensation	$	8,597		$	9,264

	Reserves and accruals	3,367			2,027

	Loss and credit carryforwards	11,132			12,817

	Total gross deferred tax assets	23,096			24,108

	Less: valuation allowances	5,474			6,362

	Net total deferred tax assets	17,622			17,746


	Deferred tax liabilities:
	Property and equipment depreciation	3,127			3,560

	Intangible asset amortization	6,358			4,815

	Other	1,147			335

	Total deferred tax liabilities	10,632			8,710


	Net deferred tax assets	$	6,990		$	9,036

Reconciliation of the beginning and ending amount of gross unrecognized tax benefits	'
	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows for the indicated periods:


		Year ended December 31,
		2013			2012				2011

	Beginning balance of gross unrecognized tax benefits	$	588		$	1,070			$	1,351

	Additions based on tax positions related to the current year	—			—				95

	Reductions for the tax positions of prior years	(53		)	(164		)		(11		)
	Reductions for settlements and payments	(323		)	(318		)		(118		)
	Reductions due to statute expiration	(127		)	—				(247		)

	Ending balance of gross unrecognized tax benefits	$	85		$	588			$	1,070

Commitments_Contingencies_And_1

Commitments, Contingencies And Legal Proceedings (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of approximate minimum annual rental payments under non-cancelable leases	'
	Future minimum annual rental payments under non-cancelable leases, excluding expected sublease proceeds of $0.2 million and $0.1 million for 2014 and 2015, are as follows for the indicated periods:


	Year	Amount

	2014	$	10,739

	2015	8,652

	2016	5,410

	2017	3,950

	2018	3,083

	Thereafter	485

	Total	$	32,319

Reporting_Segments_Tables

Reporting Segments (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Reporting segment data	'
	Reporting segment data is presented in the following table for the indicated periods:


			Year ended December 31,
			2013			2012			2011

	Revenue:
	GETS		$	321,289		$	325,046		$	323,546

	PSS		708,598			710,268			667,662

	MRI		57,972			69,644			68,595

	Total revenue		$	1,087,859		$	1,104,958		$	1,059,803


	Gross profit:
	GETS		$	89,801		$	93,718		$	96,808

	PSS		89,546			94,185			95,569

	MRI		27,294			31,506			32,924

	Total gross profit		$	206,641		$	219,409		$	225,301


	Operating profit:
	GETS (1), (2), (3)		$	25,150		$	25,725		$	14,979

	PSS (1), (4)		12,621			20,528			22,187

	MRI (1)		8,549			10,201			9,468

	Corporate (1)		(25,404		)	(24,188		)	(26,259		)
	Total operating profit		20,916			32,266			20,375

	Other (expense) income, net		(268		)	(251		)	(245		)
	Income before income taxes		$	20,648		$	32,015		$	20,130






	(1)	In 2013 and 2011, the Company recorded pre-tax charges of $5.7 million and $8.1 million, respectively, to "Restructuring and other related costs" related to the 2013 and 2011 Restructuring Plans. The following table summarizes the amount of restructuring and other related costs recognized by reporting segment for the indicated periods:


			Year ended December 31,
			2013			2012			2011

	GETS		$	2,132		$	—		$	4,467

	PSS		2,394			—			2,622

	MRI		215			—			372

	Corporate		975			—			639

	Restructuring and other related costs		$	5,716		$	—		$	8,100



	(2)	In 2013, the Company's GETS segment recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.

(3)	In 2013, the Company's GETS segment recorded a $1.8 million benefit to "Operating and administrative expenses" related to the reduction of an acquisition-related earnout liability.

(4)	In 2011, the Company's PSS segment recorded a $9.7 million benefit to "Operating and administrative expenses" related to the successful legal appeal of the UK OFT matter.
Schedule of restructuring and other related cots recognized during the year	'
	The following table summarizes the amount of restructuring and other related costs recognized by reporting segment for the indicated periods:


			Year ended December 31,
			2013			2012			2011

	GETS		$	2,132		$	—		$	4,467

	PSS		2,394			—			2,622

	MRI		215			—			372

	Corporate		975			—			639

	Restructuring and other related costs		$	5,716		$	—		$	8,100

Total depreciation and amortization by reporting segment	'
	Total depreciation and amortization by reporting segment is presented in the table below for the indicated periods:


			Year ended December 31,
			2013			2012			2011

	Depreciation and amortization:
	GETS		$	5,730		$	5,171		$	5,761

	PSS		893			840			1,210

	MRI		415			538			400

	Corporate		3,308			3,716			3,637

	Total depreciation and amortization		$	10,346		$	10,265		$	11,008

Reporting segment asset data	'
	Reporting segment asset data is presented in the following table for the indicated periods:


			December 31,
			2013			2012

	Assets:
	GETS		$	130,269		$	142,428

	PSS		168,786			150,795

	MRI		28,098			29,044

	Corporate		78,654			78,438

	Total assets		$	405,807		$	400,705


Capital expenditure data by reporting segment	'
	Capital expenditure data by reporting segment is presented in the table below for the indicated periods:


			Year ended December 31,
			2013			2012			2011

	Purchases of property and equipment:
	GETS		$	4,832		$	4,082		$	2,734

	PSS		670			837			757

	MRI		29			116			649

	Corporate		1,998			1,190			1,518

	Total purchases of property and equipment		$	7,529		$	6,225		$	5,658

Schedule of revenues by geographic area	'
	Revenue and fixed assets by geographic area are presented in the tables below for the indicated periods:


			Year ended December 31,
			2013			2012			2011

	Revenue:
	US		$	824,228		$	869,679		$	889,671

	Canada		162,252			144,089			99,541

	UK		79,743			59,967			55,900

	Other		21,636			31,223			14,691

	Total revenue		$	1,087,859		$	1,104,958		$	1,059,803

Schedule of fixed assets by geographic area	'


			December 31,
			2013			2012

	Property and equipment, net:
	US		$	18,535		$	19,902

	Canada		221			301

	UK		1,633			1,724

	Other		139			163

	Total property and equipment, net		$	20,528		$	22,090

Selected_Quarterly_Financial_I1

Selected Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Summary of quarterly financial information	'
	The following is a summary of quarterly financial information for the indicated periods:


			Year Ended December 31, 2013
			First		Second		Third		Fourth		Total
			Quarter		Quarter		Quarter		Quarter

	Revenue		$	269,466	$	263,363	$	277,916	$	277,114	$	1,087,859

	Gross profit		50,151		51,545		52,697		52,248		206,641

	Operating and administrative expenses (1), (2)		45,238		46,303		45,751		42,717		180,009

	Operating profit (1), (2), (3)		4,913		5,242		6,946		3,815		20,916

	Income before income taxes		4,862		5,180		6,889		3,717		20,648

	Net income		2,553		3,497		4,566		2,332		12,948

	Net income attributable to CDI		2,491		3,438		4,528		2,427		12,884

	Earnings per common share:
	Basic		$	0.13	$	0.18	$	0.23	$	0.13	$	0.66

	Diluted		$	0.13	$	0.17	$	0.23	$	0.12	$	0.65






	(1)	In the fourth quarter of 2013, the Company recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.

	(2)	In 2013, the Company's GETS segment recorded a $1.8 million benefit to "Operating and administrative expenses" related to the reduction of an acquisition-related earnout liability (by quarter: first $0.3 million, second $0.4 million, third $0.5 million and fourth $0.6 million.)

	(3)	In the fourth quarter of 2013, the Company recorded a $5.7 million charge to "Restructuring and other related costs" related to the 2013 Restructuring Plan.



			Year Ended December 31, 2012
			First		Second		Third		Fourth		Total
			Quarter		Quarter		Quarter		Quarter

	Revenue		$	280,627	$	274,398	$	279,390	$	270,543	$	1,104,958

	Gross profit		55,685		55,528		54,720		53,476		219,409

	Operating and administrative expenses		48,296		47,664		45,711		45,472		187,143

	Operating profit		7,389		7,864		9,009		8,004		32,266

	Income before income taxes		7,351		7,784		8,962		7,918		32,015

	Net income		3,914		5,071		5,406		5,042		19,433

	Net income attributable to CDI		3,823		4,952		5,349		4,992		19,116

	Earnings per common share:
	Basic		$	0.2	$	0.26	$	0.27	$	0.26	$	0.99

	Diluted		$	0.2	$	0.25	$	0.27	$	0.25	$	0.97

Significant_Accounting_Policie3

Significant Accounting Policies Narrative (Details)	12 Months Ended
Significant Accounting Policies Narrative (Details)	Dec. 31, 2013
Computer Equipment [Member] \| Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property, plant, and equipment	'4 years
Equipment and Furniture [Member] \| Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property, plant, and equipment	'4 years
Equipment and Furniture [Member] \| Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property, plant, and equipment	'10 years
Software [Member] \| Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property, plant, and equipment	'4 years
Software [Member] \| Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful life of property, plant, and equipment	'7 years

Significant_Accounting_Policie4

Significant Accounting Policies Changes in the allowance for doubtful accounts receivable (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts Receivable [Roll Forward]	'	'	'	'
Balance at beginning of year	'	$2,563	$3,698	$5,339
Additions charged to earnings	'	1,442	637	428
Uncollectible receivables written off, net of recoveries	-2,069	-1,112	-1,772	'
Balance at end of year	$3,698	$2,893	$2,563	$3,698

Significant_Accounting_Policie5

Significant Accounting Policies Concentration Risks (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011
Sales [Member] \| Revenue From Fixed Price Contracts [Member]	'	'
Concentration Risk [Line Items]	'	'
Concentration risk percentage	5.00%	'
Customer Concentration Risk [Member] \| Accounts Receivable [Member]	'	'
Concentration Risk [Line Items]	'	'
Concentration risk percentage	20.00%	22.00%

Properties_and_Equipment_Detai

Properties and Equipment (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Adjustments to retire property plant and equipment	$1.40	$10.30
Accumulated depreciation associated with retirement of property plant and equipment	1	9.8
Loss associated with disposal of property plant and equipment	0.4	0.5
Software and Software Development Costs [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Capitalized computer software costs	$0.70	$0.20

Properties_and_Equipment_Prope

Properties and Equipment Property and equipment, net (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	$103,040	$97,249
Accumulated depreciation	-82,512	-75,159
Property and equipment, net	20,528	22,090
Computer Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	46,427	40,281
Equipment and Furniture [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	19,429	18,881
Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	28,249	29,538
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	$8,935	$8,549

Fair_Value_Disclosure_Details

Fair Value Disclosure (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	$8,995,000	[1]	$7,623,000	[2]
Bond [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	1,495,000		1,972,000
Large Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	2,925,000		1,980,000
International [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	1,227,000		917,000
Mid Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	750,000		383,000
Small Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	738,000		509,000
Balanced [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	348,000		354,000
Money Market Funds [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	1,512,000		1,508,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	8,995,000	[1]	7,623,000	[2]
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Bond [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	1,495,000		1,972,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Large Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	2,925,000		1,980,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| International [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	1,227,000		917,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Mid Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	750,000		383,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Small Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	738,000		509,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Balanced [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	348,000		354,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Money Market Funds [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	1,512,000		1,508,000
Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0	[1]	0	[2]
Significant Other Observable Inputs (Level 2) [Member] \| Bond [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Other Observable Inputs (Level 2) [Member] \| Large Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Other Observable Inputs (Level 2) [Member] \| International [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Other Observable Inputs (Level 2) [Member] \| Mid Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Other Observable Inputs (Level 2) [Member] \| Small Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Other Observable Inputs (Level 2) [Member] \| Balanced [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Other Observable Inputs (Level 2) [Member] \| Money Market Funds [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0	[1]	0	[2]
Significant Unobservable Inputs (Level 3) [Member] \| Bond [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member] \| Large Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member] \| International [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member] \| Mid Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member] \| Small Cap [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member] \| Balanced [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) [Member] \| Money Market Funds [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Assets, Fair Value Disclosure	0		0
Prepaid Expenses and Other Current Assets [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Deferred Compensation Plan Assets	300,000		300,000
Other Non-Current Assets [Member]	'		'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'		'
Deferred Compensation Plan Assets	$8,700,000		$7,300,000

[1]	As of DecemberB 31, 2013, $0.3 million and $8.7 million are included in bPrepaid expenses and other current assetsb (liability offset in bOther accrued expenses and other current liabilitiesb) and bOther non-current assetsb (liability offset in bDeferred compensationb), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.
[2]	As of December 31, 2012, $0.3 million and $7.3 million are included in bPrepaid expenses and other current assetsb (liability offset in bOther accrued expenses and other current liabilitiesb) and bOther non-current assetsb (liability offset in bDeferred compensationb), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets Narrative (Details) (USD $)

12 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2011

Dec. 20, 2010

Jul. 02, 2013

Developed Technology [Member]

Noncompete Agreements [Member]

Trademarks [Member]

Client Relationships [Member]

Franchise Rights [Member]

DSPCon, Inc [Member]

PSS [Member]

Developed Technology [Member]

Trademarks [Member]

Client Relationships [Member]

Finite-Lived Intangible Assets [Line Items]

Finite-Lived Intangible Assets, Gross

$18,742,000

$13,577,000

$460,000

$150,000

$5,200,000

$100,000

$11,960,000

$972,000

$907,000

Business Combination, Consideration Transferred

6,900,000

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net

5,600,000

500,000

100,000

1,700,000

Goodwill

62,280,000

62,009,000

3,400,000

10,500,000

Contingent payment amount

400,000

Fair value of contingent consideration

600,000

500,000

400,000

300,000

200,000

Fair value in excess of carrying value, as a percentage

15.00%

Indefinite-lived trademarks

2,165,000

7,265,000

Adjustments, transfers out of infinite lived

-5,100,000

Amortization of Intangible Assets

-1,625,000

-1,306,000

-1,400,000

-92,000

-30,000

-29,000

-373,000

-34,000

-1,032,000

-1,056,000

-98,000

-95,000

Intangible Assets, Gross (Excluding Goodwill)

20,907,000

20,842,000

Finite-Lived Intangible Assets, Accumulated Amortization

-5,750,000

-4,125,000

-2,819,000

-276,000

-184,000

-92,000

-105,000

-75,000

-46,000

-67,000

-440,000

-67,000

-33,000

-4,625,000

-3,593,000

-2,537,000

-304,000

-206,000

-111,000

Net adjustments to intangible assets

65,000

Finite-Live Intangible Assets, Net Adjustments During Period

5,165,000

Additions

-65,000

Finite-Lived Intangible Assets, Transferred From Indefinite Lived

$5,100,000

Changes_in_the_Companys_carryi

Changes in the Company's carrying value of goodwill by reporting segment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]	'	'	'
Document Period End Date	31-Dec-13	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, Gross, Period Start	$100,536	$98,977	'
Accumulated Impairment Loss	-37,273	-38,527	-37,450
Additions	0	0	'
Goodwill, Translation and Purchase Accounting Adjustments	271	482	'
Goodwill, Gross, End of Period	99,553	100,536	'
GETS [Member]	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, Gross, Period Start	35,713	35,713	'
Accumulated Impairment Loss	-164	-164	-164
Additions	0	0	'
Goodwill, Translation and Purchase Accounting Adjustments	0	0	'
Goodwill, Gross, End of Period	35,713	35,713	'
PSS [Member]	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, Gross, Period Start	48,245	47,019	'
Accumulated Impairment Loss	-30,057	-31,448	-30,616
Additions	0	0	'
Goodwill, Translation and Purchase Accounting Adjustments	221	394	'
Goodwill, Gross, End of Period	47,075	48,245	'
MRI [Member]	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, Gross, Period Start	16,578	16,245	'
Accumulated Impairment Loss	-7,052	-6,915	-6,670
Additions	0	0	'
Goodwill, Translation and Purchase Accounting Adjustments	50	88	'
Goodwill, Gross, End of Period	$16,765	$16,578	'

Changes_in_the_Companys_carryi1

Changes in the Company's carrying value of other intangible assets (Details) (USD $)

12 Months Ended

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Trademarks [Member]

Developed Technology [Member]

Client Relationships [Member]

Noncompete Agreements [Member]

Franchise Rights [Member]

Finite-lived Intangible Assets [Roll Forward]

Finite-Lived Intangible Assets, Gross, Beginning

$18,742

$13,577

$5,200

$100

$460

$11,960

$150

$972

$907

Indefinite-Lived Trademarks, begining

2,165

7,265

Intangible Asssets, Gross, Excluding Goodwill, Beginning

20,907

20,842

Finite-Lived Intangible Assets, Accumulated Amortization, Beginning

-4,125

-2,819

-67

-33

-184

-92

-3,593

-2,537

-75

-46

-206

-111

Adjustments, transfers into finite lived

5,100

Additions

Net adjustments, finite lived

5,165

Adjustments, transfers out of infinite lived

-5,100

Net adjustments to intangible assets

Amortization of Intangible Assets

-1,625

-1,306

-1,400

-373

-34

-92

-1,032

-1,056

-30

-29

-98

-95

Finite-Lived Intangible Assets, Gross, Ending

18,742

13,577

5,200

460

11,960

150

972

Indefinite-Lived Trademarks, ending

2,165

Intangible Asssets, Gross, Excluding Goodwill, Ending

20,907

20,842

Finite-Lived Intangible Assets, Accumulated Amortization, Ending

($5,750)

($4,125)

($2,819)

($67)

($440)

($67)

($276)

($184)

($4,625)

($3,593)

($105)

($75)

($304)

($206)

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets Expected future amortization expense (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of Intangible Assets	$1,625,000	$1,306,000	$1,400,000
Minimum [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of Intangible Assets	1,100,000	'	'
Estimated annual amortization expense, year one	1,200,000	'	'
Estimated annual amortization expense, year two	1,200,000	'	'
Estimated annual amortization expense, year three	1,200,000	'	'
Estimated annual amortization expense, year four	1,200,000	'	'
Estimated annual amortization expense, year five	1,200,000	'	'
Maximum [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of Intangible Assets	1,500,000	'	'
Estimated annual amortization expense, year one	1,600,000	'	'
Estimated annual amortization expense, year two	1,600,000	'	'
Estimated annual amortization expense, year three	1,600,000	'	'
Estimated annual amortization expense, year four	1,600,000	'	'
Estimated annual amortization expense, year five	$1,600,000	'	'

Restructuring_and_Other_Relate2

Restructuring and Other Related Costs Amount of restructuring and other related costs recognized during the year (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Employee Severance and Related Costs [Member]

Real Estate Exit and Related Costs [Member]

Asset Write-offs [Member]

Accrued Restructuring Liability [Member]

Minimum [Member]

Maximum [Member]

Other Current Liabilities [Member]

Other Noncurrent Liabilities [Member]

Real Estate Exit and Related Costs [Member]

Accrued Restructuring Liability [Member]

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Cost, Number of Positions Eliminated

Restructuring and other related costs

$8,100

$5,716

$8,100

$5,739

$4,568

$831

$615

$1,530

$533

$1,000

$3,000

Restructuring Reserve

$5,372

$4,568

$427

$831

$769

$507

$5,337

$934

$6,203

$4,700

$600

Restructuring_and_Other_Relate3

Restructuring and Other Related Costs Restructuring plan provision summary (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]	'	'	'	'
Restructuring Charges	$8,100	$5,716	$0	$8,100
Employee Severance and Related Costs [Member]	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'
Restructuring Reserve, Beginning	'	427	5,372	'
Cash Payments	'	-427	-4,358	-367
Restructuring Charges	5,739	4,568	'	'
Non-cash payments	'	0	-587	0
Restructuring Reserve, Ending	5,372	4,568	427	5,372
Real Estate Exit and Related Costs [Member]	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'
Restructuring Reserve, Beginning	'	507	831	'
Cash Payments	'	-353	-701	0
Restructuring Charges	831	615	'	'
Non-cash payments	'	0	377	0
Restructuring Reserve, Ending	831	769	507	831
Asset Write-offs [Member]	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'
Restructuring Reserve, Beginning	'	0	0	'
Cash Payments	'	0	0	0
Restructuring Charges	1,530	533	'	'
Non-cash payments	'	-533	0	-1,530
Restructuring Reserve, Ending	0	0	0	0
Accrued Restructuring Liability [Member]	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'
Restructuring Reserve, Ending	$6,203	$5,337	$934	$6,203

ShortTerm_Borrowings_Details

Short-Term Borrowings (Details) (Credit Agreement [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Nov. 30, 2012
	entity	Nov. 30, 2012
Minimum [Member]	'	'
Short-term Debt [Line Items]	'	'
Ratio of Consolidated Fund Indebtedness to Earning Before Interest Taxes Depreciation Amortization	1	'
Fixed Charge Coverage Ratio	1	'
Maximum [Member]	'	'
Short-term Debt [Line Items]	'	'
Ratio of Consolidated Fund Indebtedness to Earning Before Interest Taxes Depreciation Amortization	2.5	'
Fixed Charge Coverage Ratio	1.2	'
Bank of America, N.A. [Member]	'	'
Short-term Debt [Line Items]	'	'
Line of Credit Facility, Maximum Borrowing Capacity	'	$75
Line of Credit Facility, Overdraft Facility	'	5
Number of Indirect Subsidiaries Guaranteeing Line of Credit Facility	3	'
Number of Borrowers, Line of Credit Facility	3	'
Revolving Credit Facility [Member]	'	'
Short-term Debt [Line Items]	'	'
Remaining borrowing capacity under line of credit	69.1	'
Amount outstanding on line of credit	2.8	'
Letters of Credit Outstanding, Amount	3.1	'
Revolving Credit Facility [Member] \| Minimum [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt Instrument, Interest Rate, Effective Percentage	1.42%	'
Revolving Credit Facility [Member] \| Maximum [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt Instrument, Interest Rate, Effective Percentage	1.78%	'
Revolving Credit Facility [Member] \| Bank of America, N.A. [Member] \| Minimum [Member]	'	'
Short-term Debt [Line Items]	'	'
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.15%	'
Revolving Credit Facility [Member] \| Bank of America, N.A. [Member] \| Maximum [Member]	'	'
Short-term Debt [Line Items]	'	'
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.23%	'
Revolving Credit Facility [Member] \| Bank of America, N.A. [Member] \| Applicable Rate [Member] \| Minimum [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	1.25%	'
Revolving Credit Facility [Member] \| Bank of America, N.A. [Member] \| Applicable Rate [Member] \| Maximum [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	2.00%	'
Revolving Credit Facility [Member] \| Bank of America, N.A. [Member] \| Base Rate [Member] \| Minimum [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	0.25%	'
Revolving Credit Facility [Member] \| Bank of America, N.A. [Member] \| Base Rate [Member] \| Maximum [Member]	'	'
Short-term Debt [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	1.00%	'
Revolving Credit Facility [Member] \| TD Bank [Member]	'	'
Short-term Debt [Line Items]	'	'
Letters of Credit Outstanding, Amount	0.4	'

StockBased_Compensation_Stock_

Stock-Based Compensation Stock Based Compensation (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Weighted-average fair value at grant date (per share)	$5.46	$6.18	'	'
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	'	$5.20	$4.28	'
Common stock, shares authorized	100,000,000	100,000,000	'	'
Stock Options [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total stock-based compensation expense	$264,000	$90,000	$0	'
Time-Vested Deferred Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total stock-based compensation expense	1,829,000	1,920,000	1,625,000	'
Stock Appreciation Rights [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total stock-based compensation expense	618,000	647,000	850,000	'
Employee Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total stock-based compensation expense	68,000	126,000	162,000	'
Amended and Restated 2004 Omnibus Stock Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock, shares authorized	2,100,000	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Options [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'5 years	'	'	'
Total unrecognized compensation costs related to non-vested options awards	1,200,000	'	'	'
Remaining weighted average unrecognized compensation cost related to non-vested awards (in years)	'2 years 8 months 12 days	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Time-Vested Deferred Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	$15.21	$17.14	$14.74	'
Unrecognized compensation costs for share based awards other than options	2,700,000	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	'2 years 6 months 0 days	'	'	'
Units available under plan (in units)	379,000	400,000	416,000	218,000
Weighted average market price of shares accumulated under plan (in dollars per share)	$14.69	$15.82	$14.68	$16.57
Amended and Restated 2004 Omnibus Stock Plan \| Time-Vested Deferred Stock [Member] \| Minimum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'2 years	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Time-Vested Deferred Stock [Member] \| Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'5 years	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Remaining weighted average unrecognized compensation cost related to non-vested awards (in years)	'2 years 3 months 15 days	'	'	'
Expiration period	'7 years	'	'	'
Intrinsic value	300,000	'	500,000	100,000
Unrecognized compensation costs for share based awards other than options	600,000	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	'3 years	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member] \| Minimum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Weighted-average fair value at grant date (per share)	'	$0	$3.22	'
Vesting period (in years)	'3 years	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member] \| Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Weighted-average fair value at grant date (per share)	$5.20	$5.20	$8.13	'
Vesting period (in years)	'5 years	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Performance Contingent Deferred Stock	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	'	$17.36	$13.67	'
Remaining weighted average unrecognized compensation cost related to non-vested awards (in years)	'3 years 2 months 4 days	'	'	'
Unrecognized compensation costs for share based awards other than options	800,000	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	'3 years 2 months 4 days	'	'	'
Units available under plan (in units)	42,000	107,000	107,000	0
Weighted average market price of shares accumulated under plan (in dollars per share)	$17.36	$15.78	$13.67	$0
Amended and Restated 2004 Omnibus Stock Plan \| Performance Contingent Deferred Stock \| Minimum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'2 years	'	'	'
Amended and Restated 2004 Omnibus Stock Plan \| Performance Contingent Deferred Stock \| Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'5 years	'	'	'
Stock Purchase Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Defined Contribution Plan, Employer Matching Contribution on Equity Units, Percent	33.33%	'	'	'
Stock Purchase Plan [Member] \| Employee Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Units available under plan (in units)	32,000	'	'	'
Weighted average market price of shares accumulated under plan (in dollars per share)	$15.19	'	'	'
Stock Purchase Plan [Member] \| Employee Stock [Member] \| Minimum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'3 years	'	'	'
Stock Purchase Plan [Member] \| Employee Stock [Member] \| Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'10 years	'	'	'
Director [Member] \| Amended and Restated 2004 Omnibus Stock Plan \| Time-Vested Deferred Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period (in years)	'5 years	'	'	'
Operating and Administrative Expenses [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total stock-based compensation expense	2,827,000	3,414,000	3,358,000	'
Total stock-based compensation expense, net	$1,700,000	'	$2,100,000	$2,100,000

StockBased_Compensation_Compon

Stock-Based Compensation Components of Stock Based Compensation Expense (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating and Administrative Expenses [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	$2,827	$3,414	$3,358
Time-Vested Deferred Stock [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	1,829	1,920	1,625
Stock Appreciation Rights [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	618	647	850
Performance-Contingent Deferred Stock [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	48	631	721
Employee Stock [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	68	126	162
Stock Options [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total stock-based compensation expense	$264	$90	$0

StockBased_Compensation_Time_V

Stock-Based Compensation Time Vested Deferred Stock Activity (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Document Fiscal Year Focus	'2013	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	'	$5.20	$4.28
Amended and Restated 2004 Omnibus Stock Plan \| Time-Vested Deferred Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Outstanding non-vested beginning balance (in shares)	400	416	218
Granted	104	104	305
Vested	-92	-95	-70
Cancelled (in shares)	-33	-25	-37
Outstanding non-vested ending balance (in shares)	379	400	416
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Outstanding non-vested Weighted-Average Grant Date Fair Value, begining blance (in dollars per share)	15.82	$14.68	$16.57
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	15.21	$17.14	$14.74
Vested, Weighted-Average Grant Date Fair Value (in dollars per share)	14.98	$12.89	$20.59
Cancelled, Weighted-Average Grant Date Fair Value (in dollars per share)	15.17	$13.43	$15.16
Outstanding non-vested Weighted-Average Grant Date Fair Value, ending blance (in dollars per share)	14.69	$15.82	$14.68
Outstanding at year end, Weighted-Average Remaing Contractual Life (in years)	'2 years 6 months 0 days	'	'
Dividend Participation	332	$370	$241
Closing market price per share	18.53	$17.13	$13.81
Equivalent shares at closing market price	18	22	17

StockBased_Compensation_Range_

Stock-Based Compensation Range of Assumptions for Estimating Fair Values of SARs (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Risk-free interest rate	1.55%	0.73%	'
Expected life of SARs	'3 years 10 months 24 days	'4 years 1 month 6 days	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	51.00%	56.00%	'
Expected dividend yield	3.10%	3.00%	'
Weighted-average fair value at grant date (per share)	$5.46	$6.18	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected life of SARs	'	'4 years 3 months 18 days	'4 years 6 months
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member] \| Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Risk-free interest rate	'	0.00%	0.87%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	'	0.00%	54.00%
Expected dividend yield	'	0.00%	2.71%
Weighted-average fair value at grant date (per share)	'	$0	$3.22
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member] \| Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Risk-free interest rate	0.72%	0.72%	2.37%
Expected life of SARs	'4 years 3 months 18 days	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	56.00%	56.00%	60.00%
Expected dividend yield	3.47%	3.47%	4.97%
Weighted-average fair value at grant date (per share)	$5.20	$5.20	$8.13

StockBased_Compensation_Stock_1

Stock-Based Compensation Stock Appreciation Rights Activity (Details) (USD $)	12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	'3 years 10 months 24 days	'4 years 1 month 6 days	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	51.00%	56.00%	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.55%	0.73%	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	3.10%	3.00%	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$5.46	$6.18	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$600,000	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]	'	'	'
Outstanding ending balance (in shares)	628	857	695
Granted (in shares)	'	18	429
Exercised (in shares)	-53	-79	-22
Canceled (in shares)	-16	-69	-136
Expired (in shares)	-66	-99	-109
Outstanding ending balance (in shares)	493	628	857
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Outstanding, Weighted-Average Exercise Price, Begining Balance (in dollars per share)	$16.53	$16.51	$19.47
Granted, Weighted-Aberage Exercise Price (in dollars per share)	'	$14.99	$13.15
Exercised, Weighted-Aberage Exercise Price (in dollars per share)	$11.54	$10.88	$10.06
Canceled, Weighted-Aberage Exercise Price (in dollars per share)	$12.10	$13.38	$15.70
Expired, Weighted-Aberage Exercise Price (in dollars per share)	$25.65	$22.99	$24.49
Outstanding, Weighted-Average Exercise Price, Ending Balance (in dollars per share)	$15.98	$16.53	$16.51
Outstanding at year end, Weighted-Average Remaing Contractual Life (in years)	'3 years	'	'
Outstanding at December 31, 2013 Aggregate Intrinsic Value	1,999,000	'	'
Exercisable at December 31, 2013 (in shares)	287	'	'
Exercisable at December 31, 2013, Weighted-Average Exercise Price (in dollars per share)	$18.02	'	'
Exercisable at December 31, 2013, Weighted-Average Remaing Contractual Life (in years)	'2 years 3 months 18 days	'	'
Exercisable at December 31, 2013, Aggregate Intrinsic Value	863,000	'	'
Exercisable and expected to vest at December 31, 2013 (in shares)	434	'	'
Exercisable and expected to vest at December 31, 2013, Weighted-Average Exercise Price (in dollars per share)	$16.52	'	'
Exercisable and expected to vest at December 31, 2013, Weighted-Average Remainig Contractual Life (in years)	'2 years 10 months 24 days	'	'
Exercisable and expected to vest at December 31, 2013, Aggregate Intrinsic Value	$1,613,000	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	'	'4 years 3 months 18 days	'4 years 6 months
Minimum [Member] \| Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	'	0.00%	54.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	'	0.00%	0.87%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	'	0.00%	2.71%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	'	$0	$3.22
Maximum [Member] \| Amended and Restated 2004 Omnibus Stock Plan \| Stock Appreciation Rights [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	'4 years 3 months 18 days	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	56.00%	56.00%	60.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.72%	0.72%	2.37%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	3.47%	3.47%	4.97%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$5.20	$5.20	$8.13

StockBased_Compensation_Perfor

Stock-Based Compensation Performance Contingent Deferred Stock (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	'	$5.20	$4.28
Amended and Restated 2004 Omnibus Stock Plan \| Performance Contingent Deferred Stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Outstanding non-vested beginning balance (in shares)	107	107	0
Granted	'	82	133
Cancelled (in shares)	-19	-32	-26
Vested	-46	-50	'
Outstanding non-vested ending balance (in shares)	42	107	107
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Outstanding non-vested Weighted-Average Grant Date Fair Value, begining blance (in dollars per share)	$15.78	$13.67	$0
Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	'	$17.36	$13.67
Cancelled, Weighted-Average Grant Date Fair Value (in dollars per share)	$17.36	$16.02	$13.64
Vested, Weighted-Average Grant Date Fair Value (in dollars per share)	$14	$13.67	'
Outstanding non-vested Weighted-Average Grant Date Fair Value, ending blance (in dollars per share)	$17.36	$15.78	$13.67
Outstanding at year end, Weighted-Average Remaing Contractual Life (in years)	'3 years 2 months 4 days	'	'

StockBased_Compensation_Stock_2

Stock-Based Compensation Stock Options Activity (Details) (USD $)	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.55%	0.73%	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	27	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	'3 years 10 months 24 days	'4 years 1 month 6 days	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	51.00%	56.00%	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	3.10%	3.00%	'
Amended and Restated 2004 Omnibus Stock Plan \| Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Outstanding, begining balance (in shares)	144	0	155
Granted (in shares)	127	'	'
Cancelled, (in shares)	-11	-154	-50
Expired, (in shares)	'	-10	-105
Outstanding, ending balance (in shares)	260	144	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Outstanding, Weighted-Average Exercise Price, Begining Balance (in dollars per share)	$17.36	$0	$23.57
Granted, Weighted-Aberage Exercise Price (in dollars per share)	$16.80	'	'
Canceled, Weighted-Aberage Exercise Price (in dollars per share)	$17.36	$17.36	$16.05
Expired, Weighted-Aberage Exercise Price (in dollars per share)	'	$17.36	$27.15
Outstanding, Weighted-Average Exercise Price, Ending Balance (in dollars per share)	$17.09	$17.36	$0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]	'	'	'
Oustanding at December 31, 2013, Weighted-Average Remaining Contractual Life (In Years)	'6 years 4 months 24 days	'	'
Oustanding at December 31, 2013, Aggregate Intrinsic Value	$0	'	'

Basic_and_Diluted_Earnings_Per2

Basic and Diluted Earnings Per Share (EPS) Data Numerator and Denominator Calculation (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share, Basic and Diluted [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net income attributable to CDI	$2,427	$4,528	$3,438	$2,491	$4,992	$5,349	$4,952	$3,823	$12,884	$19,116	$14,833
Basic weighted-average shares (in shares)	'	'	'	'	'	'	'	'	19,442,000	19,344,000	19,144,000
Dilutive effect o stock-based awards (in shares)	'	'	'	'	'	'	'	'	297,000	401,000	212,000
Diluted weighted-average shares (in shares)	'	'	'	'	'	'	'	'	19,739,000	19,745,000	19,356,000
Basic (in dollars per share)	$0.13	$0.23	$0.18	$0.13	$0.26	$0.27	$0.26	$0.20	$0.66	$0.99	$0.77
Diluted (in dollars per share)	$0.12	$0.23	$0.17	$0.13	$0.25	$0.27	$0.25	$0.20	$0.65	$0.97	$0.77
Shares excluded from computation of EPS (in shares)	'	'	'	'	'	'	'	'	459,000	425,000	729,000

Income_Taxes_Income_tax_Detail

Income Taxes Income tax (Details) (USD $)	12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013
					Foreign Deferred Tax Assets [Member]	Foreign Deferred Tax Assets [Member]	Foreign Deferred Tax Assets [Member]	Foreign Deferred Tax Assets [Member]	Foreign Deferred Tax Assets [Member]	Foreign Deferred Tax Assets [Member]	Foreign Deferred Tax Assets [Member]
						Foreign Tax Authority [Member]	Foreign Tax Authority [Member]	UK	UK	UK	AUSTRALIA
Operating Loss Carryforwards [Line Items]	'	'	'	'	'	'	'	'	'	'	'
State net operating loss carry forwards	$93,000,000	'	'	'	'	'	'	'	'	'	'
Foreign tax credits	2,100,000	'	'	'	'	'	'	'	'	'	'
Foreign net operating losses	21,000,000	'	'	'	'	'	'	'	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	'	'	'	'	900,000	600,000	600,000	100,000	500,000	400,000	1,000,000
Gross unrecognized tax benefits	85,000	588,000	1,070,000	1,351,000	'	'	'	'	'	'	'
Interest and penalties realted to unrecognized tax benefits	200,000	'	'	'	'	'	'	'	'	'	'
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	600,000	'	'	'	'	'	'	'	'	'	'
Undistributed earnings of foreign subsidiaries	$40,000,000	'	'	'	'	'	'	'	'	'	'

Income_Taxes_Schedule_of_incom

Income Taxes Schedule of income (loss) before income taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
United States	$15,290	$25,417	$11,186
Foreign	5,358	6,598	8,944
Income before income taxes	$20,648	$32,015	$20,130

Income_Taxes_Schedule_of_incom1

Income Taxes Schedule of income tax expense (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal	$3,040	$3,845	$2,595
State	870	360	1,604
Foreign	1,884	2,176	442
Total current	5,794	6,381	4,641
Federal	328	4,819	1,086
State	1,669	1,198	-552
Foreign	-91	184	-45
Total deferred	1,906	6,201	489
Income tax expense	$7,700	$12,582	$5,130

Income_Taxes_Reconciliation_of

Income Taxes Reconciliation of income tax expense and rate based on the U.S. statutory rate to the Companys income tax expense (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]	'	'	'
Income tax expense based on the U.S. statutory rate	$7,227	$11,205	$7,046
Effect of charge related to the UK OFT matter	0	0	-3,381
State income taxes, net of federal tax benefit	1,147	1,013	684
Permanent items	179	148	164
Effect of foreign operations	1,008	2	289
Net change in uncertain tax positions	-737	-274	-139
Change in valuation allowance - foreign loss carryforwards	-898	477	634
HIRE Act income tax credit	-763	0	-947
Effective Income Tax Rate Reconciliation, Tax Credits, Other	-3.70%	0.00%	-4.70%
Stock-based compensation	241	382	689
Other	296	-371	91
Income tax expense	$7,700	$12,582	$5,130
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]	'	'	'
Income tax expense based on the U.S. statutory rate (as a percentage)	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit, as a percentage	5.60%	3.20%	3.40%
Permanent items, as a percentage	0.90%	0.50%	0.80%
Effect of foreign operations, as a percenage	4.90%	0.00%	1.40%
Net change in uncertain tax positions, as a percentage	-3.60%	-0.90%	-0.70%
Change in valuation allowance - federal foreign tax credits, as a percentage	0.00%	0.00%	-16.80%
Change in valuation allowance - foreign loss carryforwards, as a percentage	-4.30%	1.50%	3.20%
Stock-based compensation, as a percentage	1.10%	1.20%	3.40%
Other, as a perentage	1.40%	-1.20%	0.50%
Income tax expense, as a percentage	37.30%	39.30%	25.50%

Income_Taxes_Schedule_of_the_t

Income Taxes Schedule of the tax effects of temporary differences that give rise to the Companybs deferred tax accounts (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:	'	'
Accrued compensation	$8,597	$9,264
Reserves and accruals	3,367	2,027
Loss and credit carryforwards	11,132	12,817
Total gross deferred tax assets	23,096	24,108
Less: valuation allowances	5,474	6,362
Net total deferred tax assets	17,622	17,746
Deferred tax liabilities:	'	'
Property and equipment depreciation	3,127	3,560
Intangible asset amortization	6,358	4,815
Other	1,147	335
Total deferred tax liabilities	10,632	8,710
Net deferred tax assets	$6,990	$9,036

Income_Taxes_Reconciliation_of1

Income Taxes Reconciliation of the beginning and ending amount of gross unrecognized tax benefits (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Current Income Tax Expense (Benefit)	$5,794	$6,381	$4,641
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Beginning balance of gross unrecognized tax benefits	588	1,070	1,351
Additions based on tax provisions related to the current year	0	0	95
Reductions for the tax provisions of prior years	-53	-164	-11
Reductions for settlement and payments	-323	-318	-118
Reductions due to statute expiration	-127	0	-247
Ending balance of gross unrecognized tax benefits	$85	$588	$1,070

Commitments_Contingencies_And_2

Commitments, Contingencies And Legal Proceedings (Details) (USD $)

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

1 Months Ended

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2010

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2011

Dec. 31, 2013

Apr. 30, 2011

Dec. 31, 2009

Jun. 30, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2011

Dec. 20, 2010

Dec. 31, 2013

Operating and Administrative Expenses [Member]

Unfavorable Regulatory Action [Member]

DSPCon, Inc [Member]

Client Relationships [Member]

Developed Technology [Member]

Trademarks [Member]

Year-End Adjustment [Member]

Operating and Administrative Expenses [Member]

DSPCon, Inc [Member]

Loss Contingencies [Line Items]

Operating leases rent expense

$12,100,000

$12,300,000

$13,000,000

Operating leases sub-lease proceeds

400,000

200,000

700,000

Stop loss insurance for workers compensation claims per incident

250,000

Stop loss insurance health care benefit claims per incident

200,000

Accrual for estimated claims exposure

2,100,000

2,000,000

Accrual for workersb compensation estimated claims exposure

5,200,000

4,000,000

Estimated possible loss contingency

2,500,000

12,300,000

Benefit related to settlement

9,700,000

3,300,000

9,700,000

Business Combination, Consideration Transferred

6,900,000

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net

5,600,000

1,700,000

500,000

100,000

Goodwill

62,280,000

62,009,000

3,400,000

Contingent payment amount

400,000

Fair value of contingent consideration

$600,000

$500,000

$400,000

$300,000

$200,000

$1,800,000

Commitments_Contingencies_And_3

Commitments, Contingencies And Legal Proceedings Schedule of approximate minimum annual rental payments under non-cancelable leases (Details) (USD $)	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
2013	$10,739,000
2014	8,652,000
2015	5,410,000
2016	3,950,000
2017	3,083,000
Thereafter	485,000
Total	32,319,000
Future receipts from subleases, 2013	200,000
Future receipts from subleases, 2014	$100,000

Retirement_Plans_Details

Retirement Plans (Details) (Operating and Administrative Expenses [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010
Operating and Administrative Expenses [Member]	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Charges to income for retirement plans	$2.30	$2.10	$1.10

Related_Party_Transactions_Det

Related Party Transactions (Details) (Affiliated Entity of Director [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Affiliated Entity of Director [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Related party disbursements for legal services	$0.80	$0.30	$0.50

Joint_Ventures_Details

Joint Ventures (Details) (USD $)	12 Months Ended			1 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2006	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
				CTQ Engineering LLC	CTQ Engineering LLC	Subsidiaries	Subsidiaries	Subsidiaries
				firm
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'
Percentage of ownership in investment	'	'	'	'	50.00%	67.00%	'	'
Aggregate cost of investment	'	'	'	'	'	$600,000	'	'
Income before income taxes	$20,648,000	$32,015,000	$20,130,000	'	'	$600,000	$1,200,000	$700,000
Number of firms that make up LLC	'	'	'	2	'	'	'	'

Reporting_Segments_Details

Reporting Segments (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Reportable_Segment

Segment Reporting Information [Line Items]

Number of reportable segments (in segments)

Term for Master Statement of Work

'3 years

Optional term for Master Statement of Work

'3 years

Revenue

$277,114

$277,916

$263,363

$269,466

$270,543

$279,390

$274,398

$280,627

$1,087,859

$1,104,958

$1,059,803

Gross profit

52,248

52,697

51,545

50,151

53,476

54,720

55,528

55,685

206,641

219,409

225,301

Operating profit (loss)

3,815

[1],[2],[3]

6,946

[1],[2],[3]

5,242

[1],[2],[3]

4,913

[1],[2],[3]

8,004

9,009

7,864

7,389

20,916

[2],[4],[5]

32,266

[4],[5]

20,375

[4],[5]

Other (expense) income, net

-268

-251

-245

Income before income taxes

20,648

32,015

20,130

Master Statement of Work, Optional Incremental Extension Term

'1 year

GETS [Member]

Segment Reporting Information [Line Items]

Revenue

321,289

325,046

323,546

Gross profit

89,801

93,718

96,808

Operating profit (loss)

25,150

25,725

14,979

PSS [Member]

Segment Reporting Information [Line Items]

Revenue

708,598

710,268

667,662

Gross profit

89,546

94,185

95,569

Operating profit (loss)

12,621

20,528

22,187

MRI [Member]

Segment Reporting Information [Line Items]

Revenue

57,972

69,644

68,595

Gross profit

27,294

31,506

32,924

Operating profit (loss)

8,549

10,201

9,468

Corporate [Member]

Segment Reporting Information [Line Items]

Operating profit (loss)

($25,404)

($24,188)

($26,259)

Sales [Member] | IBM [Member]

Segment Reporting Information [Line Items]

Concentration risk percentage

19.00%

20.00%

21.00%

[1]

In 2013, the Company's GETS segment recorded a $1.8 million benefit to "Operating and administrative expenses" related to the reduction of an acquisition-related earnout liability (by quarter: first $0.3 million, second $0.4 million, third $0.5 million and fourth $0.6 million.)

[2]

In the fourth quarter of 2013, the Company recorded a $5.7 million charge to "Restructuring and other related costs" related to the 2013 Restructuring Plan.

[3]

In the fourth quarter of 2013, the Company recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.

[4]

In 2013 and 2011, the Company recorded pre-tax charges of $5.7 million and $8.1 million, respectively, to "Restructuring and other related costs" related to the 2013 and 2011 Restructuring Plans. The following table summarizes the amount of restructuring and other related costs recognized by reporting segment for the indicated periods: Year ended December 31, 2013B 2012B 2011 GETSB $2,132B $bB $4,467PSSB 2,394B bB 2,622MRIB 215B bB 372CorporateB 975B bB 639Restructuring and other related costsB $5,716B $bB $8,100

[5]

In 2011, the Company's PSS segment recorded a $9.7 million benefit to "Operating and administrative expenses" related to the successful legal appeal of the UK OFT matter.

Reporting_Segments_Schedule_of

Reporting Segments Schedule of restructuring and other related cots recognized during the year (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Jun. 30, 2011

Dec. 31, 2013

GETS [Member]

PSS [Member]

MRI [Member]

Corporate [Member]

Operating and Administrative Expenses [Member]

Year-End Adjustment [Member]

Segment Reporting Information [Line Items]

Restructuring and other related costs

$8,100,000

$5,716,000

$8,100,000

$2,132,000

$4,467,000

$2,394,000

$2,622,000

$215,000

$372,000

$975,000

$639,000

Benefit related to settlement

9,700,000

3,300,000

Fair value of contingent consideration

$600,000

$500,000

$400,000

$300,000

$1,800,000

Reporting_Segments_Total_depre

Reporting Segments Total depreciation and amortization by reporting segment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Total depreciation and amortization	$10,346	$10,265	$11,008
GETS [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total depreciation and amortization	5,730	5,171	5,761
PSS [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total depreciation and amortization	893	840	1,210
MRI [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total depreciation and amortization	415	538	400
Corporate [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total depreciation and amortization	$3,308	$3,716	$3,637

Reporting_Segments_Reporting_s

Reporting Segments Reporting segment asset data (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets:	'	'
Total assets	$405,807	$400,705
GETS [Member]	'	'
Assets:	'	'
Total assets	130,269	142,428
PSS [Member]	'	'
Assets:	'	'
Total assets	168,786	150,795
MRI [Member]	'	'
Assets:	'	'
Total assets	28,098	29,044
Corporate [Member]	'	'
Assets:	'	'
Total assets	$78,654	$78,438

Reporting_Segments_Capital_exp

Reporting Segments Capital expenditure data by reporting segment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Total purchases of property and equipment	$7,529	$6,225	$5,658
GETS [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total purchases of property and equipment	4,832	4,082	2,734
PSS [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total purchases of property and equipment	670	837	757
MRI [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total purchases of property and equipment	29	116	649
Corporate [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total purchases of property and equipment	1,998	1,190	1,518
Including L R Kimball and DSPCon Property and Equipment Acquired [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total purchases of property and equipment	'	'	$5,658

Reporting_Segments_Schedule_of1

Reporting Segments Schedule of revenues by geographic area (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total revenue	$277,114	$277,916	$263,363	$269,466	$270,543	$279,390	$274,398	$280,627	$1,087,859	$1,104,958	$1,059,803
US	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total revenue	'	'	'	'	'	'	'	'	824,228	869,679	889,671
Canada	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total revenue	'	'	'	'	'	'	'	'	162,252	144,089	99,541
UK	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total revenue	'	'	'	'	'	'	'	'	79,743	59,967	55,900
Other	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total revenue	'	'	'	'	'	'	'	'	$21,636	$31,223	$14,691

Reporting_Segments_Schedule_of2

Reporting Segments Schedule of fixed assets by geographic area (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	$20,528	$22,090
US	'	'
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	18,535	19,902
UK	'	'
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	1,633	1,724
Canada	'	'
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	221	301
Other	'	'
Segment Reporting Information [Line Items]	'	'
Property and equipment, net	$139	$163

Selected_Quarterly_Financial_I2

Selected Quarterly Financial Information (Unaudited) (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jun. 30, 2011

Dec. 31, 2013

Jun. 30, 2011

Dec. 31, 2013

Operating and Administrative Expenses [Member]

Unfavorable Regulatory Action [Member]

Year-End Adjustment [Member]

Operating and Administrative Expenses [Member]

Selected Quarterly Financial Information [Abstract]

Revenue

$277,114,000

$277,916,000

$263,363,000

$269,466,000

$270,543,000

$279,390,000

$274,398,000

$280,627,000

$1,087,859,000

$1,104,958,000

$1,059,803,000

Gross profit

52,248,000

52,697,000

51,545,000

50,151,000

53,476,000

54,720,000

55,528,000

55,685,000

206,641,000

219,409,000

225,301,000

Operating and administrative expenses

42,717,000

[1],[2]

45,751,000

[1],[2]

46,303,000

[1],[2]

45,238,000

[1],[2]

45,472,000

45,711,000

47,664,000

48,296,000

180,009,000

[1],[2]

187,143,000

196,826,000

Restructuring and other related costs

8,100,000

5,716,000

8,100,000

Operating profit (1), (2), (3)

3,815,000

[1],[2],[3]

6,946,000

[1],[2],[3]

5,242,000

[1],[2],[3]

4,913,000

[1],[2],[3]

8,004,000

9,009,000

7,864,000

7,389,000

20,916,000

[3],[4],[5]

32,266,000

[4],[5]

20,375,000

[4],[5]

Income before income taxes

3,717,000

6,889,000

5,180,000

4,862,000

7,918,000

8,962,000

7,784,000

7,351,000

20,648,000

32,015,000

20,130,000

Net income

2,332,000

4,566,000

3,497,000

2,553,000

5,042,000

5,406,000

5,071,000

3,914,000

12,948,000

19,433,000

15,000,000

Net income attributable to CDI

2,427,000

4,528,000

3,438,000

2,491,000

4,992,000

5,349,000

4,952,000

3,823,000

12,884,000

19,116,000

14,833,000

Earnings per common share:

Basic (in dollars per share)

$0.13

$0.23

$0.18

$0.13

$0.26

$0.27

$0.26

$0.20

$0.66

$0.99

$0.77

Diluted (in dollars per share)

$0.12

$0.23

$0.17

$0.13

$0.25

$0.27

$0.25

$0.20

$0.65

$0.97

$0.77

Benefit related to settlement

9,700,000

3,300,000

9,700,000

Fair value of contingent consideration

$600,000

$500,000

$400,000

$300,000

$600,000

$1,800,000

[1]

[2]

In the fourth quarter of 2013, the Company recorded a $3.3 million benefit to "Operating and administrative expenses" related to the settlement of legal claims pursued by the Company.

[3]

In the fourth quarter of 2013, the Company recorded a $5.7 million charge to "Restructuring and other related costs" related to the 2013 Restructuring Plan.

[4]

[5]

In 2011, the Company's PSS segment recorded a $9.7 million benefit to "Operating and administrative expenses" related to the successful legal appeal of the UK OFT matter.