Consolidated Statements Of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Total CDI Shareholders' Equity [Member]	Common Stock	Treasury Stock	Additional Paid-In-Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Noncontrolling Interest
Beginning balance (shares) at Dec. 31, 2012			21,822
Beginning balance at Dec. 31, 2012	$ 279,780	$ 278,971	$ 2,182	$ (52,487)	$ 67,863	$ 259,912	$ 1,501	$ 809
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 benefit, net	(50)				(50)
Reclassification of equity awards from liabilities, net	336	336			336
Vesting and exercise of equity awards (shares)			189
Vesting and exercise of equity awards	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 (shares) at Dec. 31, 2013			21,958
Ending balance at Dec. 31, 2013	285,174	284,308	$ 2,196	(52,487)	70,104	265,207	(712)	866
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,017	3,082				3,082		(65)
Translation adjustments	(5,593)	(5,495)					(5,495)	(98)
Share-based compensation expense	2,708	2,708			2,708
Reclassification of equity awards from liabilities, net	(279)	(279)			(279)
Vesting and exercise of equity awards (shares)			155
Vesting and exercise of equity awards	0	0	$ 16		(16)
Common shares withheld for taxes (shares)			(29)
Common shares withheld for taxes	(498)	(498)	$ (4)		(494)
Cash dividends paid	(10,176)	(10,176)				(10,176)
Ending balance (shares) at Dec. 31, 2014			22,084
Ending balance at Dec. 31, 2014	274,353	273,650	$ 2,208	(52,487)	72,023	258,113	(6,207)	703
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(37,086)	(37,003)				(37,003)		(83)
Translation adjustments	(7,830)	(7,928)					(7,928)	98
Share-based compensation expense	2,355	2,355			2,355
Reclassification of equity awards from liabilities, net	706	706			706
Vesting and exercise of equity awards (shares)			98
Vesting and exercise of equity awards	0	0	$ 10		(10)
Common shares withheld for taxes (shares)			(19)
Common shares withheld for taxes	(302)	(302)	$ (2)		(300)
Disposition of controlling interest	(718)							(718)
Cash dividends paid	(10,235)	(10,235)				(10,235)
Ending balance (shares) at Dec. 31, 2015			22,163
Ending balance at Dec. 31, 2015	$ 221,243	$ 221,243	$ 2,216	$ (52,487)	$ 74,774	$ 210,875	$ (14,135)	$ 0