Basis of Presentation (Details Textual) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2014 USD ($)	Dec. 31, 2015 Subsidiaries Segment Countries Product	Dec. 31, 2014 USD ($)
Product Information [Line Items]
Number of wholly owned subsidiaries | Subsidiaries		2
Number of reportable business segments | Segment		3
Proceeds from sale of IntelliTools product line			$ 806
Learning A-Z
Product Information [Line Items]
Number of countries in which product is used | Countries		180
ExploreLearning Segment
Product Information [Line Items]
Number of products under ExploreLearning | Product		2
Technology Education Business 1
Product Information [Line Items]
Company's industry leading brands		Learning A-Z
Technology Education Business 2
Product Information [Line Items]
Company's industry leading brands		ExploreLearning
Technology Education Business 3
Product Information [Line Items]
Company's industry leading brands		Kurzweil Education
Technology Education Business 4
Product Information [Line Items]
Company's industry leading brands		Voyager Sopris Learning
IntelliTools
Product Information [Line Items]
Proceeds from sale of IntelliTools product line	$ 800