Consolidated Statements Of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In-Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total CDI Shareholders' Equity	Non-Controlling Interest
Beginning balance (shares) at Dec. 31, 2014		22,084
Beginning balance at Dec. 31, 2014	$ 274,353	$ 2,208	$ (52,487)	$ 72,023	$ 258,113	$ (6,207)	$ 273,650	$ 703
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to CDI	470				470		470
Net income	387							(83)
Translation adjustments	(4,582)					(4,680)	(4,680)	98
Share-based compensation expense	537			537			537
Reclassification of equity awards from liabilities, net	174			174			174
Vesting of equity awards (shares)		39
Vesting of equity awards	0	$ 4		(4)			0
Common shares withheld for taxes (shares)		(15)
Common shares withheld for taxes	(257)	$ (1)		(256)			(257)
Disposition of controlling interest	(718)							(718)
Cash dividends paid	(2,554)				(2,554)		(2,554)
Ending balance (shares) at Mar. 31, 2015		22,108
Ending balance at Mar. 31, 2015	267,340	$ 2,211	(52,487)	72,474	256,029	(10,887)	267,340	0
Beginning balance (shares) at Dec. 31, 2015		22,163
Beginning balance at Dec. 31, 2015	221,243	$ 2,216	(52,487)	74,774	210,875	(14,135)	221,243	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to CDI	(4,817)						(4,817)
Net income	(4,817)							0
Translation adjustments	2,520					2,520	2,520	0
Share-based compensation expense	693			693			693
Reclassification of equity awards from liabilities, net	(41)			(41)			(41)
Vesting of equity awards (shares)		29
Vesting of equity awards	0	$ 4		(4)			0
Common shares withheld for taxes (shares)		(7)
Common shares withheld for taxes	(37)	$ (1)		(36)			(37)
Stock repurchased under stock repurchase program	(1,662)		(1,662)				(1,662)
Ending balance (shares) at Mar. 31, 2016		22,185
Ending balance at Mar. 31, 2016	$ 217,899	$ 2,219	$ (54,149)	$ 75,386	$ 206,058	$ (11,615)	$ 217,899	$ 0