Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 4,675	$ 16,932
Accounts receivable, net of allowances of $2,452 and $1,942	218,224	205,494
Prepaid expenses and other current assets	12,554	12,768
Prepaid income taxes	8,070	5,126
Total current assets	243,523	240,320
Property and equipment, net of accumulated depreciation of $87,577 and $84,941	19,330	18,728
Deferred income taxes	3,412	3,228
Goodwill	45,576	45,794
Other intangible assets, net	18,202	20,427
Other non-current assets	9,988	10,600
Total assets	340,031	339,097
Current liabilities:
Credit facility	25,932	18,831
Accounts payable	35,775	30,262
Accrued compensation and related expenses	37,127	34,464
Other accrued expenses and other current liabilities	13,839	19,903
Income taxes payable	332	323
Total current liabilities	113,005	103,783
Deferred compensation	7,388	7,723
Deferred income tax	6,768	1,530
Other non-current liabilities	5,806	4,818
Total liabilities	132,967	117,854
Commitments and contingencies
Equity:
Preferred stock, $0.10 par value - authorized 1,000 shares; none issued	0	0
Common stock	2,225	2,216
Additional paid-in-capital	75,820	74,774
Retained earnings	198,574	210,875
Accumulated other comprehensive (loss) income	(11,460)	(14,135)
Common stock in treasury, at cost - 3,392 and 2,463 shares	(58,095)	(52,487)
Total CDI shareholders' equity	207,064	221,243
Total equity	207,064	221,243
Total liabilities and equity	340,031	339,097
Common Class B [Member]
Equity:
Common stock	$ 0	$ 0