Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 39,242	$ 36,324
Accounts receivable, net of allowances of $2,130 and $1,950	217,120	219,578
Prepaid expenses and other current assets	12,803	8,302
Prepaid income taxes	1,323	753
Deferred income taxes	4,030	4,138
Total current assets	274,518	269,095
Property and equipment, net of accumulated depreciation of $90,353 and $86,813	20,728	20,350
Deferred income taxes	8,474	9,203
Goodwill	50,740	50,630
Other intangible assets, net	11,809	12,424
Other non-current assets	9,265	10,518
Total assets	375,534	372,220
Current liabilities:
Short-term borrowings	3,124	1,250
Accounts payable	28,397	30,071
Accrued compensation and related expenses	49,634	36,005
Other accrued expenses and other current liabilities	13,284	14,502
Income taxes payable	414	1,015
Total current liabilities	94,853	82,843
Deferred compensation	8,118	9,094
Deferred income tax	1,030	1,034
Other non-current liabilities	4,367	4,896
Total liabilities	$ 108,368	$ 97,867
Commitments and contingencies
Equity:
Preferred stock, $0.10 par value - authorized 1,000 shares; none issued	$ 0	$ 0
Common stock	2,216	2,208
Additional paid-in-capital	73,206	72,023
Retained earnings	253,312	258,113
Accumulated other comprehensive (loss) income	(9,081)	(6,207)
Common stock in treasury, at cost - 2,463 shares	(52,487)	(52,487)
Total CDI shareholders' equity	267,166	273,650
Noncontrolling interest	0	703
Total equity	267,166	274,353
Total liabilities and equity	375,534	372,220
Common Class B [Member]
Equity:
Common stock	$ 0	$ 0