Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 2,041	$ 2,553
Other comprehensive income:
Foreign currency translation adjustments	(1,325)	(2,171)
Total comprehensive income	716	382
Less: Comprehensive income attributable to the noncontrolling interest	4	110
Total comprehensive income attributable to CDI	$ 712	$ 272